PLP-dependent aminotransferase family protein may combine pyridoxal phosphate with an alpha-amino acid to form a Schiff base or aldimine intermediate, which then acts as the substrate in a reaction such as a transamination, racemization, or decarboxylation
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP) ...
4-410
4.56e-148
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP)-dependent enzymes. PLP combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. Structure and sequence analysis has revealed that the PLP dependent enzymes can be classified into four major groups of different evolutionary origin: aspartate aminotransferase superfamily (fold type I), tryptophan synthase beta superfamily (fold type II), alanine racemase superfamily (fold type III), and D-amino acid superfamily (fold type IV) and Glycogen phophorylase family (fold type V).
The actual alignment was detected with superfamily member TIGR01976:
Pssm-ID: 450240 [Multi-domain] Cd Length: 397 Bit Score: 425.71 E-value: 4.56e-148
cysteine desulfurase family protein, VC1184 subfamily; This model describes a subfamily of ...
4-410
4.56e-148
cysteine desulfurase family protein, VC1184 subfamily; This model describes a subfamily of probable pyridoxal phosphate-dependent enzymes in the aminotransferase class V family (pfam00266). The most closely related characterized proteins are active as cysteine desulfurases, selenocysteine lyases, or both; some are involved in FeS cofactor biosynthesis and are designated NifS. An active site Cys residue present in those sequences, in motifs resembling GHHC or GSAC, is not found in this family. The function of members of this family is unknown, but seems unlike to be as an aminotransferase. [Unknown function, Enzymes of unknown specificity]
Pssm-ID: 273906 [Multi-domain] Cd Length: 397 Bit Score: 425.71 E-value: 4.56e-148
Cysteine desulfurase (SufS)-like. This family belongs to the pyridoxal phosphate (PLP) ...
26-407
1.72e-72
Cysteine desulfurase (SufS)-like. This family belongs to the pyridoxal phosphate (PLP)-dependent aspartate aminotransferase superfamily (fold I). The major groups in this CD correspond to cysteine desulfurase (SufS) and selenocysteine lyase. SufS catalyzes the removal of elemental sulfur and selenium atoms from L-cysteine, L-cystine, L-selenocysteine, and L-selenocystine to produce L-alanine; and selenocysteine lyase catalyzes the decomposition of L-selenocysteine.
Pssm-ID: 99746 [Multi-domain] Cd Length: 373 Bit Score: 231.59 E-value: 1.72e-72
family 2A encapsulin nanocompartment cargo protein cysteine desulfurase; Capsid-like ...
6-410
4.67e-32
family 2A encapsulin nanocompartment cargo protein cysteine desulfurase; Capsid-like encapsulin nanocompartments are commonly found in bacteria and archaea. Encapsulin nanocompartments, which are assembled from shell proteins, encapsulate various cargo proteins, typically peroxidases or ferritin-like proteins, to protect cells from oxidative stress caused by peroxide. Proteins of this family are cysteine desulfurases with an additional N-terminal encapsulation targeting sequence (~200 aa) that is necessary and sufficient for compartmentalization.
Pssm-ID: 469077 [Multi-domain] Cd Length: 623 Bit Score: 128.05 E-value: 4.67e-32
cysteine desulfurase family protein, VC1184 subfamily; This model describes a subfamily of ...
4-410
4.56e-148
cysteine desulfurase family protein, VC1184 subfamily; This model describes a subfamily of probable pyridoxal phosphate-dependent enzymes in the aminotransferase class V family (pfam00266). The most closely related characterized proteins are active as cysteine desulfurases, selenocysteine lyases, or both; some are involved in FeS cofactor biosynthesis and are designated NifS. An active site Cys residue present in those sequences, in motifs resembling GHHC or GSAC, is not found in this family. The function of members of this family is unknown, but seems unlike to be as an aminotransferase. [Unknown function, Enzymes of unknown specificity]
Pssm-ID: 273906 [Multi-domain] Cd Length: 397 Bit Score: 425.71 E-value: 4.56e-148
Cysteine desulfurase (SufS)-like. This family belongs to the pyridoxal phosphate (PLP) ...
26-407
1.72e-72
Cysteine desulfurase (SufS)-like. This family belongs to the pyridoxal phosphate (PLP)-dependent aspartate aminotransferase superfamily (fold I). The major groups in this CD correspond to cysteine desulfurase (SufS) and selenocysteine lyase. SufS catalyzes the removal of elemental sulfur and selenium atoms from L-cysteine, L-cystine, L-selenocysteine, and L-selenocystine to produce L-alanine; and selenocysteine lyase catalyzes the decomposition of L-selenocysteine.
Pssm-ID: 99746 [Multi-domain] Cd Length: 373 Bit Score: 231.59 E-value: 1.72e-72
family 2A encapsulin nanocompartment cargo protein cysteine desulfurase; Capsid-like ...
6-410
4.67e-32
family 2A encapsulin nanocompartment cargo protein cysteine desulfurase; Capsid-like encapsulin nanocompartments are commonly found in bacteria and archaea. Encapsulin nanocompartments, which are assembled from shell proteins, encapsulate various cargo proteins, typically peroxidases or ferritin-like proteins, to protect cells from oxidative stress caused by peroxide. Proteins of this family are cysteine desulfurases with an additional N-terminal encapsulation targeting sequence (~200 aa) that is necessary and sufficient for compartmentalization.
Pssm-ID: 469077 [Multi-domain] Cd Length: 623 Bit Score: 128.05 E-value: 4.67e-32
Alanine-glyoxylate aminotransferase (AGAT) family. This family belongs to pyridoxal phosphate ...
30-414
2.49e-08
Alanine-glyoxylate aminotransferase (AGAT) family. This family belongs to pyridoxal phosphate (PLP)-dependent aspartate aminotransferase superfamily (fold I). The major groups in this CD correspond to alanine-glyoxylate aminotransferase (AGAT), serine-glyoxylate aminotransferase (SGAT), and 3-hydroxykynurenine transaminase (HKT). AGAT is a homodimeric protein, which catalyses the transamination of glyoxylate to glycine, and SGAT converts serine and glyoxylate to hydroxypyruvate and glycine. HKT catalyzes the PLP-dependent transamination of 3-hydroxykynurenine, a potentially toxic metabolite of the kynurenine pathway.
Pssm-ID: 99744 [Multi-domain] Cd Length: 356 Bit Score: 55.37 E-value: 2.49e-08
DegT/DnrJ/EryC1/StrS aminotransferase family; The members of this family are probably all ...
110-299
9.51e-05
DegT/DnrJ/EryC1/StrS aminotransferase family; The members of this family are probably all pyridoxal-phosphate-dependent aminotransferase enzymes with a variety of molecular functions. The family includes StsA, StsC and StsS. The aminotransferase activity was demonstrated for purified StsC protein as the L-glutamine:scyllo-inosose aminotransferase EC:2.6.1.50, which catalyzes the first amino transfer in the biosynthesis of the streptidine subunit of streptomycin.
Pssm-ID: 395827 Cd Length: 360 Bit Score: 44.20 E-value: 9.51e-05
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP) ...
110-238
2.18e-03
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP)-dependent enzymes. PLP combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. Structure and sequence analysis has revealed that the PLP dependent enzymes can be classified into four major groups of different evolutionary origin: aspartate aminotransferase superfamily (fold type I), tryptophan synthase beta superfamily (fold type II), alanine racemase superfamily (fold type III), and D-amino acid superfamily (fold type IV) and Glycogen phophorylase family (fold type V).
Pssm-ID: 99742 [Multi-domain] Cd Length: 170 Bit Score: 38.90 E-value: 2.18e-03
Glycine cleavage system P-protein, alpha- and beta-subunits. This family consists of Glycine ...
104-233
9.48e-03
Glycine cleavage system P-protein, alpha- and beta-subunits. This family consists of Glycine cleavage system P-proteins EC:1.4.4.2 from bacterial, mammalian and plant sources. The P protein is part of the glycine decarboxylase multienzyme complex EC:2.1.2.10 (GDC) also annotated as glycine cleavage system or glycine synthase. GDC consists of four proteins P, H, L and T. The reaction catalysed by this protein is: Glycine + lipoylprotein <=> S-aminomethyldihydrolipoylprotein + CO2. Alpha-beta-type dimers associate to form an alpha(2)beta(2) tetramer, where the alpha- and beta-subunits are structurally similar and appear to have arisen by gene duplication and subsequent divergence with a loss of one active site. The members of this CD are widely dispersed among all three forms of cellular life.
Pssm-ID: 99737 [Multi-domain] Cd Length: 398 Bit Score: 37.98 E-value: 9.48e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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