Myosin and Kinesin motor domain; Myosin and Kinesin motor domain. These ATPases belong to the P-loop NTPase family and provide the driving force in myosin and kinesin mediated processes. Some of the names do not match with what is given in the sequence list. This is because they are based on the current nomenclature by Kollmar/Sebe-Pedros.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01377    1 ASVLHNLRERYYSDLIYTYSGLFCVAVNPYKRLPIYTEEVIDKYKGKRREEMPPHIFAIADNAYRNMLQDRENQSILITG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKD----QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01377   81 ESGAGKTENTKKVIQYLASVAASSKKKKEsgkkKGTLEDQILQANPILEAFGNAKTVRNNN 141

class II myosins, motor domain; Myosin motor domain in class II myosins. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. Thus, myosin II has two heads. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01377    1 ASVLHNLRERYYSDLIYTYSGLFCVAVNPYKRLPIYTEEVIDKYKGKRREEMPPHIFAIADNAYRNMLQDRENQSILITG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKD----QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01377   81 ESGAGKTENTKKVIQYLASVAASSKKKKEsgkkKGTLEDQILQANPILEAFGNAKTVRNNN 141

Myosin. Large ATPases; ATPase; molecular motor. Muscle contraction consists of a cyclical interaction between myosin and actin. The core of the myosin structure is similar in fold to that of kinesin.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501    76 NPPKFSKVEDMAELTCLNEASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITD 155
Cdd:smart00242   1 NPPKFEGVEDLVLLTYLNEPAVLHNLKKRYLKDLIYTYIGLVLVAVNPYKQLPIYTDEVIKKYRGKSRGELPPHVFAIAD 80

                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 119580501   156 TAYRSMMQDREDQSILCTGESGAGKTENTKKVIQYLAYVASSHKSKkdqGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:smart00242  81 NAYRNMLNDKENQSIIISGESGAGKTENTKKIMQYLASVSGSNTEV---GSVEDQILESNPILEAFGNAKTLRNNN 153

myosin-A; Provisional

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  93 NEASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHE-MPPHIYAITDTAYRSMMQDREDQSIL 171
Cdd:PTZ00014 108 NIPCVLDFLKHRYLKNQIYTTADPLLVAINPFKDLGNTTNDWIRRYRDAKDSDkLPPHVFTTARRALENLHGVKKSQTII 187

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 172 CTGESGAGKTENTKKVIQYLAYVASSHKSKKDQgeleRQLLQANPILEAFGNAKTVKNDN 231
Cdd:PTZ00014 188 VSGESGAGKTEATKQIMRYFASSKSGNMDLKIQ----NAIMAANPVLEAFGNAKTIRNNN 243

class II myosins, motor domain; Myosin motor domain in class II myosins. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. Thus, myosin II has two heads. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01377    1 ASVLHNLRERYYSDLIYTYSGLFCVAVNPYKRLPIYTEEVIDKYKGKRREEMPPHIFAIADNAYRNMLQDRENQSILITG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKD----QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01377   81 ESGAGKTENTKKVIQYLASVAASSKKKKEsgkkKGTLEDQILQANPILEAFGNAKTVRNNN 141

class II myosin heavy chain 10, motor domain; Myosin motor domain of non-muscle myosin heavy chain 10 (also called NMMHCB). Mutations in this gene have been associated with May-Hegglin anomaly and developmental defects in brain and heart. Multiple transcript variants encoding different isoforms have been found for this gene. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14920    1 ASVLHNLKDRYYSGLIYTYSGLFCVVINPYKNLPIYSENIIEMYRGKKRHEMPPHIYAISESAYRCMLQDREDQSILCTG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKD---QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14920   81 ESGAGKTENTKKVIQYLAHVASSHKGRKDhniPGELERQLLQANPILESFGNAKTVKNDN 140

class II myosin heavy chain 18, motor domain; Myosin motor domain of muscle myosin heavy chain 18. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14932    1 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKYLPIYSEEIVNMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKDQ-------GELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14932   81 ESGAGKTENTKKVIQYLAYVASSFKTKKDQssialshGELEKQLLQANPILEAFGNAKTVKNDN 144

class II myosin heavy chain 2, motor domain; Myosin motor domain of type IIa skeletal muscle myosin heavy chain 2 (also called MYH2A, MYHSA2, MyHC-IIa, MYHas8, MyHC-2A) in insects and mollusks. This gene encodes a member of the class II or conventional myosin heavy chains, and functions in skeletal muscle contraction. Mutations in this gene results in inclusion body myopathy-3 and familial congenital myopathy. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14911    1 ASVLHNIKDRYYSGLIYTYSGLFCVVVNPYKKLPIYTEKIMERYKGIKRHEVPPHVFAITDSAYRNMLGDREDQSILCTG 80

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASShKSKKD-------------QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14911   81 ESGAGKTENTKKVIQFLAYVAAS-KPKGSgavphpavnpavlIGELEQQLLQANPILEAFGNAKTVKNDN 149

class II myosin heavy chain 11, motor domain; Myosin motor domain of smooth muscle myosin heavy chain 11 (also called SMMHC, SMHC). The gene product is a subunit of a hexameric protein that consists of two heavy chain subunits and two pairs of non-identical light chain subunits. It functions as a major contractile protein, converting chemical energy into mechanical energy through the hydrolysis of ATP. The gene encoding a human ortholog of rat NUDE1 is transcribed from the reverse strand of this gene, and its 3' end overlaps with that of the latter. Inversion of the MYH11 locus is one of the most frequent chromosomal aberrations found in acute myeloid leukemia. Alternative splicing generates isoforms that are differentially expressed, with ratios changing during muscle cell maturation. Mutations in MYH11 have been described in individuals with thoracic aortic aneurysms leading to acute aortic dissections with patent ductus arteriosus. MYH11 mutations are also thought to contribute to human colorectal cancer and are also associated with Peutz-Jeghers syndrome. The mutations found in human intestinal neoplasia result in unregulated proteins with constitutive motor activity, similar to the mutant myh11 zebrafish. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14921    1 ASVLHNLRERYFSGLIYTYSGLFCVVVNPYKHLPIYSEKIVDMYKGKKRHEMPPHIYAIADTAYRSMLQDREDQSILCTG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKDQ---GELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14921   81 ESGAGKTENTKKVIQYLAVVASSHKGKKDTsitGELEKQLLQANPILEAFGNAKTVKNDN 140

class II myosin heavy chain 14 motor domain; Myosin motor domain of non-muscle myosin heavy chain 14 (also called FLJ13881, KIAA2034, MHC16, MYH17). Its members include mammals, chickens, and turtles. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Some of the data used for this classification were produced by the CyMoBase team at the Max-Planck-Institute for Biophysical Chemistry. The sequence names are composed of the species abbreviation followed by the protein abbreviation and optional protein classifier and variant designations.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14930    1 ASVLHNLRERYYSGLIYTYSGLFCVVINPYKQLPIYTEAIVEMYRGKKRHEVPPHVYAVTEGAYRSMLQDREDQSILCTG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKD---QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14930   81 ESGAGKTENTKKVIQYLAHVASSPKGRKEpgvPGELERQLLQANPILEAFGNAKTVKNDN 140

class II myosin heavy chain 1, motor domain; Myosin motor domain of type IIx skeletal muscle myosin heavy chain 1 (also called MYHSA1, MYHa, MyHC-2X/D, MGC133384) in insects and crustaceans. Myh1 is a type I skeletal muscle myosin that in Humans is encoded by the MYH1 gene. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14909    1 ASVLHNLRQRYYAKLIYTYSGLFCVAINPYKRYPVYTNRCAKMYRGKRRNEVPPHIFAISDGAYVDMLTNHVNQSMLITG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKDQ---GELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14909   81 ESGAGKTENTKKVIAYFATVGASKKTDEAAkskGSLEDQVVQTNPVLEAFGNAKTVRNDN 140

class II myosin heavy chain 3, motor domain; Myosin motor domain of fetal skeletal muscle myosin heavy chain 3 (MYHC-EMB, MYHSE1, HEMHC, SMHCE) in tetrapods including mammals, lizards, and frogs. This gene is a member of the MYH family and encodes a protein with an IQ domain and a myosin head-like domain. Mutations in this gene have been associated with two congenital contracture (arthrogryposis) syndromes, Freeman-Sheldon syndrome and Sheldon-Hall syndrome. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd14913    2 AVLYNLKDRYTSWMIYTYSGLFCVTVNPYKWLPVYNPEVVEGYRGKKRQEAPPHIFSISDNAYQFMLTDRENQSILITGE 81

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 119580501 176 SGAGKTENTKKVIQYLAYVASS-----HKSKKDQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14913   82 SGAGKTVNTKRVIQYFATIAATgdlakKKDSKMKGTLEDQIISANPLLEAFGNAKTVRNDN 142

class II myosin heavy chain 7b, motor domain; Myosin motor domain of cardiac muscle, beta myosin heavy chain 7b (also called KIAA1512, dJ756N5.1, MYH14, MHC14). MYH7B is a slow-twitch myosin. Mutations in this gene result in one form of autosomal dominant hearing impairment. Multiple transcript variants encoding different isoforms have been found for this gene. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14927    1 ASVLHNLRRRYSRWMIYTYSGLFCVTVNPYKWLPVYTAPVVAAYKGKRRSEAPPHIYAIADNAYNDMLRNRENQSMLITG 80

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 119580501 175 ESGAGKTENTKKVIQYLAYVAS---------SHKSKKDQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14927   81 ESGAGKTVNTKRVIQYFAIVAAlgdgpgkkaQFLATKTGGTLEDQIIEANPAMEAFGNAKTLRNDN 146

class VII myosin, motor domain; These monomeric myosins have been associated with functions in sensory systems such as vision and hearing. Mammalian myosin VII has a tail with 2 MyTH4 domains, 2 FERM domains, and a SH3 domain. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01381    1 AGILRNLLIRYREKLIYTYTGSILVAVNPYQILPIYTAEQIRLYRNKKIGELPPHIFAIADNAYTNMKRNKRDQCVVISG 80

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*..
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSkkdqgeLERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01381   81 ESGAGKTESTKLILQYLAAISGQHSW------IEQQILEANPILEAFGNAKTIRNDN 131

class II myosin heavy chain 8, motor domain; Myosin motor domain of perinatal skeletal muscle myosin heavy chain 8 (also called MyHC-peri, MyHC-pn). Myosin is a hexameric protein composed of a pair of myosin heavy chains (MYH) and two pairs of nonidentical light chains. A mutation in this gene results in trismus-pseudocamptodactyly syndrome. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  97 VLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGES 176
Cdd:cd14918    3 VLYNLKERYAAWMIYTYSGLFCVTVNPYKWLPVYNPEVVAAYRGKKRQEAPPHIFSISDNAYQFMLTDRENQSILITGES 82

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501 177 GAGKTENTKKVIQYLAYVASSHKSKKD-----QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14918   83 GAGKTVNTKRVIQYFATIAVTGEKKKEesgkmQGTLEDQIISANPLLEAFGNAKTVRNDN 142

class II myosin heavy chain 1, motor domain; Myosin motor domain of type IIx skeletal muscle myosin heavy chain 1 (also called MYHSA1, MYHa, MyHC-2X/D, MGC133384) in mammals. Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd14910    2 AVLYNLKERYAAWMIYTYSGLFCVTVNPYKWLPVYNAEVVTAYRGKKRQEAPPHIFSISDNAYQFMLTDRENQSILITGE 81

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 119580501 176 SGAGKTENTKKVIQYLAYVASSHKSKKD-------QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14910   82 SGAGKTVNTKRVIQYFATIAVTGEKKKEeatsgkmQGTLEDQIISANPLLEAFGNAKTVRNDN 144

class II myosin heavy chain 4, motor domain; Myosin motor domain of skeletal muscle myosin heavy chain 4 (also called MYH2B, MyHC-2B, MyHC-IIb). Class II myosins, also called conventional myosins, are the myosin type responsible for producing actomyosin contraction in metazoan muscle and non-muscle cells. Myosin II contains two heavy chains made up of the head (N-terminal) and tail (C-terminal) domains with a coiled-coil morphology that holds the two heavy chains together. The intermediate neck domain is the region creating the angle between the head and tail. It also contains 4 light chains which bind the heavy chains in the "neck" region between the head and tail. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. Class-II myosins are regulated by phosphorylation of the myosin light chain or by binding of Ca2+. A cyclical interaction between myosin and actin provides the driving force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd14915    2 AVLYNLKERYAAWMIYTYSGLFCVTVNPYKWLPVYNPEVVTAYRGKKRQEAPPHIFSISDNAYQFMLTDRENQSILITGE 81

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 119580501 176 SGAGKTENTKKVIQYLAYVASSHKSKKD-------QGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14915   82 SGAGKTVNTKRVIQYFATIAVTGEKKKEeaasgkmQGTLEDQIISANPLLEAFGNAKTVRNDN 144

class XXII myosin, motor domain; These myosins possess an extended neck with multiple IQ motifs such as found in class V, VIII, XI, and XIII myosins. These myosins are defined by two tandem MyTH4 and FERM domains. The apicomplexan, but not diatom myosins contain 4-6 WD40 repeats near the end of the C-terminal tail which suggests a possible function of these myosins in signal transduction and transcriptional regulation. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd14883    2 GINTNLKVRYKKDLIYTYTGSILVAVNPYKELPIYTQDIVKQYFGKRMGALPPHIFALAEAAYTNMQEDGKNQSVIISGE 81

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 119580501 176 SGAGKTENTKKVIQYLAYVASSHKskkdqgELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14883   82 SGAGKTETTKLILQYLCAVTNNHS------WVEQQILEANTILEAFGNAKTVRNDN 131

class V myosin, motor domain; Myo5, also called heavy chain 12, myoxin, are dimeric myosins that transport a variety of intracellular cargo processively along actin filaments, such as melanosomes, synaptic vesicles, vacuoles, and mRNA. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. It also contains a IQ domain and a globular DIL domain. Myosin V is a class of actin-based motor proteins involved in cytoplasmic vesicle transport and anchorage, spindle-pole alignment and mRNA translocation. The protein encoded by this gene is abundant in melanocytes and nerve cells. Mutations in this gene cause Griscelli syndrome type-1 (GS1), Griscelli syndrome type-3 (GS3) and neuroectodermal melanolysosomal disease, or Elejalde disease. Multiple alternatively spliced transcript variants encoding different isoforms have been reported, but the full-length nature of some variants has not been determined. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. Note that the Dictyostelium myoVs are not contained in this child group. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSG-LIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01380    2 AVLHNLKVRFCQRnAIYTYCGIVLVAINPYEDLPIYGEDIIQAYSGQNMGELDPHIFAIAEEAYRQMARDEKNQSIIVSG 81

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*..
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASSHKSKKdqgELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01380   82 ESGAGKTVSAKYAMRYFATVGGSSSGET---QVEEKVLASNPIMEAFGNAKTTRNDN 135

class VIII myosin, motor domain; These plant-specific type VIII myosins has been associated with endocytosis, cytokinesis, cell-to-cell coupling and gating at plasmodesmata. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. It also contains IQ domains Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKgkKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd01383    2 SVLHNLEYRYSQDIIYTKAGPVLIAVNPFKDVPLYGNEFITAYR--QKLLDSPHVYAVADTAYREMMRDEINQSIIISGE 79

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 119580501 176 SGAGKTENTKKVIQYLAYVASshkskkDQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01383   80 SGAGKTETAKIAMQYLAALGG------GSSGIENEILQTNPILEAFGNAKTLRNDN 129

class IV myosin, motor domain; These myosins all possess a WW domain either N-terminal or C-terminal to their motor domain and a tail with a MyTH4 domain followed by a SH3 domain in some instances. The monomeric Acanthamoebas were the first identified members of this group and have been joined by Stramenopiles. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd14872    1 AMIVHNLRKRFKNDQIYTNVGTILISVNPFKRLPLYTPTVMDQYMHKGPKEMPPHTYNIADDAYRAMIVDAMNQSILISG 80

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*..
gi 119580501 175 ESGAGKTENTKKVIQYLAYVASShkskkdQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14872   81 ESGAGKTEATKQCLSFFAEVAGS------TNGVEQRVLLANPILEAFGNAKTLRNNN 131

class III myosin, motor domain; Myosin III has been shown to play a role in the vision process in insects and in hearing in mammals. Myosin III, an unconventional myosin, does not form dimers. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. They are characterized by an N-terminal protein kinase domain and several IQ domains. Some members also contain WW, SH2, PH, and Y-phosphatase domains. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  96 SVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTGE 175
Cdd:cd01379    2 TIVSQLQKRYSRDQIYTYIGDILIAVNPFQNLGIYTEEHSRLYRGAKRSDNPPHIFAVADAAYQAMIHQKKNQCIVISGE 81

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 119580501 176 SGAGKTENTKKVIQYLAYVasshkSKKDQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01379   82 SGAGKTESANLLVQQLTVL-----GKANNRTLEEKILQVNPLMEAFGNARTVINDN 132

class XV mammal-like myosin, motor domain; The class XV myosins are monomeric. In vertebrates, myosin XV appears to be expressed in sensory tissue and play a role in hearing. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. C-terminal to the head domain are 2 MyTH4 domain, a FERM domain, and a SH3 domain. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMYKGKKRHEMPPHIYAITDTAYRSMMQDREDQSILCTG 174
Cdd:cd01387    1 TTVLWNLKTRYERNLIYTYIGSILVSVNPYKMFDIYGLEQVQQYSGRALGELPPHLFAIANLAFAKMLDAKQNQCVVISG 80

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*..
gi 119580501 175 ESGAGKTENTKKVIQYLAYVAsshksKKDQGELERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd01387   81 ESGSGKTEATKLIMQYLAAVN-----QRRNNLVTEQILEATPLLEAFGNAKTVRNDN 132

class XL myosin, motor domain; The class XL myosins are comprised of Stramenopiles. Not much is known about this myosin class. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLPIYSEEIVEMY------KGKKRHEMPPHIYAITDTAYRSMMQDRE-- 166
Cdd:cd14901    1 PSILHVLRRRFAHGLIYTSTGAILVAINPFRRLPLYDDETKEAYyehgerRAAGERKLPPHVYAVADKAFRAMLFASRgq 80

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 119580501 167 --DQSILCTGESGAGKTENTKKVIQYLAYVASshKSKKDQGELER-----QLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14901   81 kcDQSILVSGESGAGKTETTKIIMNYLASVSS--ATTHGQNATERenvrdRVLESNPILEAFGNARTNRNNN 150

class XXVII myosin, motor domain; Not much is known about this myosin class. The catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 119580501  95 ASVLHNLKERYYSGLIYTYSGLFCVVINPYKNLP-IYSEEIVEMYKgKKRHEMPPHIYAITDTAYRSMMQDREDQSILCT 173
Cdd:cd14888    1 ASILHSLNLRFDIDEIYTFTGPILIAVNPFKTIPgLYSDEMLLKFI-QPSISKSPHVFSTASSAYQGMCNNKKSQTILIS 79

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 119580501 174 GESGAGKTENTKKVIQYLAYVASSHKSKKDQgeLERQLLQANPILEAFGNAKTVKNDN 231
Cdd:cd14888   80 GESGAGKTESTKYVMKFLACAGSEDIKKRSL--VEAQVLESNPLLEAFGNARTLRNDN 135

class XLVII myosin, motor domain; The class XLVII myosins are comprised of Stramenopiles. Not much is known about this myosin class. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the filament (power stroke). Release of ADP completes the cycle. CyMoBase classifications were used to confirm and identify the myosins in this hierarchy.