eukaryotic release factor 1 (eRF1) family protein such as eRF1 that directs the termination of nascent peptide synthesis (translation) in response to the termination codons UAA, UAG and UGA
peptide chain release factor 1, archaeal and eukaryotic forms; Directs the termination of ...
1-370
4.71e-66
peptide chain release factor 1, archaeal and eukaryotic forms; Directs the termination of nascent peptide synthesis (translation) in response to the termination codons UAA, UAG and UGA. This model identifies both archaeal (aRF1) and eukaryotic (eRF1) of the protein. Also known as translation termination factor 1. [Protein synthesis, Translation factors]
The actual alignment was detected with superfamily member TIGR00111:
Pssm-ID: 456209 [Multi-domain] Cd Length: 351 Bit Score: 213.14 E-value: 4.71e-66
mRNA surveillance protein pelota; This model describes the Drosophila protein Pelota, the ...
1-370
4.71e-66
mRNA surveillance protein pelota; This model describes the Drosophila protein Pelota, the budding yeast protein DOM34 which it can replace, and a set of closely related archaeal proteins. Members contain a proposed RNA binding motif. The meiotic defect in pelota mutants may be a complex result of a protein translation defect, as suggested in yeast by ribosomal protein RPS30A being a multicopy suppressor and by an altered polyribosome profile in DOM34 mutants rescued by RPS30A. This family is homologous to a family of peptide chain release factors. Pelota is proposed to act in protein translation. [Protein synthesis, Translation factors]
Pssm-ID: 129217 [Multi-domain] Cd Length: 351 Bit Score: 213.14 E-value: 4.71e-66
eRF1 domain 1; The release factor eRF1 terminates protein biosynthesis by recognising stop ...
1-128
4.92e-52
eRF1 domain 1; The release factor eRF1 terminates protein biosynthesis by recognising stop codons at the A site of the ribosome and stimulating peptidyl-tRNA bond hydrolysis at the peptidyl transferase centre. The crystal structure of human eRF1 is known. The overall shape and dimensions of eRF1 resemble a tRNA molecule with domains 1, 2, and 3 of eRF1 corresponding to the anticodon loop, aminoacyl acceptor stem, and T stem of a tRNA molecule, respectively. The position of the essential GGQ motif at an exposed tip of domain 2 suggests that the Gln residue coordinates a water molecule to mediate the hydrolytic activity at the peptidyl transferase centre. A conserved groove on domain 1, 80 A from the GGQ motif, is proposed to form the codon recognition site. This family also includes other proteins for which the precise molecular function is unknown. Many of them are from Archaebacteria. These proteins may also be involved in translation termination but this awaits experimental verification.
Pssm-ID: 460930 [Multi-domain] Cd Length: 122 Bit Score: 169.20 E-value: 4.92e-52
mRNA surveillance protein pelota; This model describes the Drosophila protein Pelota, the ...
1-370
4.71e-66
mRNA surveillance protein pelota; This model describes the Drosophila protein Pelota, the budding yeast protein DOM34 which it can replace, and a set of closely related archaeal proteins. Members contain a proposed RNA binding motif. The meiotic defect in pelota mutants may be a complex result of a protein translation defect, as suggested in yeast by ribosomal protein RPS30A being a multicopy suppressor and by an altered polyribosome profile in DOM34 mutants rescued by RPS30A. This family is homologous to a family of peptide chain release factors. Pelota is proposed to act in protein translation. [Protein synthesis, Translation factors]
Pssm-ID: 129217 [Multi-domain] Cd Length: 351 Bit Score: 213.14 E-value: 4.71e-66
eRF1 domain 1; The release factor eRF1 terminates protein biosynthesis by recognising stop ...
1-128
4.92e-52
eRF1 domain 1; The release factor eRF1 terminates protein biosynthesis by recognising stop codons at the A site of the ribosome and stimulating peptidyl-tRNA bond hydrolysis at the peptidyl transferase centre. The crystal structure of human eRF1 is known. The overall shape and dimensions of eRF1 resemble a tRNA molecule with domains 1, 2, and 3 of eRF1 corresponding to the anticodon loop, aminoacyl acceptor stem, and T stem of a tRNA molecule, respectively. The position of the essential GGQ motif at an exposed tip of domain 2 suggests that the Gln residue coordinates a water molecule to mediate the hydrolytic activity at the peptidyl transferase centre. A conserved groove on domain 1, 80 A from the GGQ motif, is proposed to form the codon recognition site. This family also includes other proteins for which the precise molecular function is unknown. Many of them are from Archaebacteria. These proteins may also be involved in translation termination but this awaits experimental verification.
Pssm-ID: 460930 [Multi-domain] Cd Length: 122 Bit Score: 169.20 E-value: 4.92e-52
eRF1 domain 3; The release factor eRF1 terminates protein biosynthesis by recognising stop ...
271-370
9.60e-40
eRF1 domain 3; The release factor eRF1 terminates protein biosynthesis by recognising stop codons at the A site of the ribosome and stimulating peptidyl-tRNA bond hydrolysis at the peptidyl transferase centre. The crystal structure of human eRF1 is known. The overall shape and dimensions of eRF1 resemble a tRNA molecule with domains 1, 2, and 3 of eRF1 corresponding to the anticodon loop, aminoacyl acceptor stem, and T stem of a tRNA molecule, respectively. The position of the essential GGQ motif at an exposed tip of domain 2 suggests that the Gln residue coordinates a water molecule to mediate the hydrolytic activity at the peptidyl transferase centre. A conserved groove on domain 1, 80 A from the GGQ motif, is proposed to form the codon recognition site. This family also includes other proteins for which the precise molecular function is unknown. Many of them are from Archaebacteria. These proteins may also be involved in translation termination but this awaits experimental verification.
Pssm-ID: 397503 [Multi-domain] Cd Length: 100 Bit Score: 136.53 E-value: 9.60e-40
eRF1 domain 2; The release factor eRF1 terminates protein biosynthesis by recognising stop ...
136-268
1.54e-29
eRF1 domain 2; The release factor eRF1 terminates protein biosynthesis by recognising stop codons at the A site of the ribosome and stimulating peptidyl-tRNA bond hydrolysis at the peptidyl transferase centre. The crystal structure of human eRF1 is known. The overall shape and dimensions of eRF1 resemble a tRNA molecule with domains 1, 2, and 3 of eRF1 corresponding to the anticodon loop, aminoacyl acceptor stem, and T stem of a tRNA molecule, respectively. The position of the essential GGQ motif at an exposed tip of domain 2 suggests that the Gln residue coordinates a water molecule to mediate the hydrolytic activity at the peptidyl transferase centre. A conserved groove on domain 1, 80 A from the GGQ motif, is proposed to form the codon recognition site. This family also includes other proteins for which the precise molecular function is unknown. Many of them are from Archaebacteria. These proteins may also be involved in translation termination but this awaits experimental verification.
Pssm-ID: 397502 Cd Length: 133 Bit Score: 110.83 E-value: 1.54e-29
Peptide chain release factor 1 (eRF1) [Translation, ribosomal structure and biogenesis]; Peptide chain release factor 1 (eRF1) is part of the Pathway/BioSystem: Translation factors
Pssm-ID: 441112 [Multi-domain] Cd Length: 384 Bit Score: 77.24 E-value: 1.64e-15
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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