tRNA(Met) C34 N-acetyltransferase TmcA [Translation, ribosomal structure and biogenesis]; tRNA(Met) C34 N-acetyltransferase TmcA is part of the Pathway/BioSystem: tRNA modification
The actual alignment was detected with superfamily member COG1444:
Pssm-ID: 441053 [Multi-domain] Cd Length: 703 Bit Score: 334.49 E-value: 1.35e-101
tRNA(Met) C34 N-acetyltransferase TmcA [Translation, ribosomal structure and biogenesis]; tRNA(Met) C34 N-acetyltransferase TmcA is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 441053 [Multi-domain] Cd Length: 703 Bit Score: 334.49 E-value: 1.35e-101
tRNA(Met) cytidine acetyltransferase TmcA, N-terminal; This domain of unknown function is ...
9-201
1.19e-70
tRNA(Met) cytidine acetyltransferase TmcA, N-terminal; This domain of unknown function is often found at the N-terminus of the bacterial tRNA(Met) cytidine acetyltransferase TmcA. TmcA catalyzes the formation of N(4)-acetylcytidine (ac4C) at the wobble position of tRNA(Met) by using acetyl-CoA as an acetyl donor and either ATP or GTP. This modification is thought to ensure precise recognition of the AUG codon by strengthening C-G base-pair interaction and also prevent misrecognition of the near cognate AUA codon. This domain is also found in mammalian N-acetyltransferase 10 (NAT10) and fungal protein Kre33. Kre33 and NAT10 are RNA cytosine acetyltransferases with specificity toward both 18S rRNA and tRNAs and contain additional putative nuclear and nucleolar localization signals (NLS and NoLS respectively).
Pssm-ID: 462441 [Multi-domain] Cd Length: 178 Bit Score: 232.57 E-value: 1.19e-70
ribosomal-protein-alanine acetyltransferase; Members of this model belong to the GCN5-related ...
624-655
1.14e-03
ribosomal-protein-alanine acetyltransferase; Members of this model belong to the GCN5-related N-acetyltransferase (GNAT) superfamily. This model covers prokarotes and the archaea. The seed contains a characterized accession for Gram negative E. coli. An untraceable characterized accession (PIR|S66013) for Gram positive B. subtilis scores well (205.0) in the full alignment. Characterized members are lacking in the archaea. Noise cutoff (72.4) was set to exclude M. loti paralog of rimI. Trusted cutoff (80.0) was set at next highest scoring member in the mini-database. [Protein synthesis, Ribosomal proteins: synthesis and modification]
Pssm-ID: 273701 [Multi-domain] Cd Length: 131 Bit Score: 40.00 E-value: 1.14e-03
N-Acyltransferase superfamily: Various enzymes that characteristically catalyze the transfer ...
616-648
2.79e-03
N-Acyltransferase superfamily: Various enzymes that characteristically catalyze the transfer of an acyl group to a substrate; NAT (N-Acyltransferase) is a large superfamily of enzymes that mostly catalyze the transfer of an acyl group to a substrate and are implicated in a variety of functions, ranging from bacterial antibiotic resistance to circadian rhythms in mammals. Members include GCN5-related N-Acetyltransferases (GNAT) such as Aminoglycoside N-acetyltransferases, Histone N-acetyltransferase (HAT) enzymes, and Serotonin N-acetyltransferase, which catalyze the transfer of an acetyl group to a substrate. The kinetic mechanism of most GNATs involves the ordered formation of a ternary complex: the reaction begins with Acetyl Coenzyme A (AcCoA) binding, followed by binding of substrate, then direct transfer of the acetyl group from AcCoA to the substrate, followed by product and subsequent CoA release. Other family members include Arginine/ornithine N-succinyltransferase, Myristoyl-CoA: protein N-myristoyltransferase, and Acyl-homoserinelactone synthase which have a similar catalytic mechanism but differ in types of acyl groups transferred. Leucyl/phenylalanyl-tRNA-protein transferase and FemXAB nonribosomal peptidyltransferases which catalyze similar peptidyltransferase reactions are also included.
Pssm-ID: 173926 [Multi-domain] Cd Length: 65 Bit Score: 37.26 E-value: 2.79e-03
tRNA(Met) C34 N-acetyltransferase TmcA [Translation, ribosomal structure and biogenesis]; tRNA(Met) C34 N-acetyltransferase TmcA is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 441053 [Multi-domain] Cd Length: 703 Bit Score: 334.49 E-value: 1.35e-101
tRNA(Met) cytidine acetyltransferase TmcA, N-terminal; This domain of unknown function is ...
9-201
1.19e-70
tRNA(Met) cytidine acetyltransferase TmcA, N-terminal; This domain of unknown function is often found at the N-terminus of the bacterial tRNA(Met) cytidine acetyltransferase TmcA. TmcA catalyzes the formation of N(4)-acetylcytidine (ac4C) at the wobble position of tRNA(Met) by using acetyl-CoA as an acetyl donor and either ATP or GTP. This modification is thought to ensure precise recognition of the AUG codon by strengthening C-G base-pair interaction and also prevent misrecognition of the near cognate AUA codon. This domain is also found in mammalian N-acetyltransferase 10 (NAT10) and fungal protein Kre33. Kre33 and NAT10 are RNA cytosine acetyltransferases with specificity toward both 18S rRNA and tRNAs and contain additional putative nuclear and nucleolar localization signals (NLS and NoLS respectively).
Pssm-ID: 462441 [Multi-domain] Cd Length: 178 Bit Score: 232.57 E-value: 1.19e-70
Helicase; This domain contains a P-loop (Walker A) motif, suggesting that it has ATPase ...
281-480
3.63e-60
Helicase; This domain contains a P-loop (Walker A) motif, suggesting that it has ATPase activity, and a Walker B motif. In tRNA(Met) cytidine acetyltransferase (TmcA) it may function as an RNA helicase motor (driven by ATP hydrolysis) which delivers the wobble base to the active centre of the GCN5-related N-acetyltransferase (GNAT) domain. It is found in the bacterial exodeoxyribonuclease V alpha chain (RecD), which has 5'-3' helicase activity. It is structurally similar to the motor domain 1A in other SF1 helicases.
Pssm-ID: 461555 [Multi-domain] Cd Length: 171 Bit Score: 203.15 E-value: 3.63e-60
ribosomal-protein-alanine acetyltransferase; Members of this model belong to the GCN5-related ...
624-655
1.14e-03
ribosomal-protein-alanine acetyltransferase; Members of this model belong to the GCN5-related N-acetyltransferase (GNAT) superfamily. This model covers prokarotes and the archaea. The seed contains a characterized accession for Gram negative E. coli. An untraceable characterized accession (PIR|S66013) for Gram positive B. subtilis scores well (205.0) in the full alignment. Characterized members are lacking in the archaea. Noise cutoff (72.4) was set to exclude M. loti paralog of rimI. Trusted cutoff (80.0) was set at next highest scoring member in the mini-database. [Protein synthesis, Ribosomal proteins: synthesis and modification]
Pssm-ID: 273701 [Multi-domain] Cd Length: 131 Bit Score: 40.00 E-value: 1.14e-03
N-Acyltransferase superfamily: Various enzymes that characteristically catalyze the transfer ...
616-648
2.79e-03
N-Acyltransferase superfamily: Various enzymes that characteristically catalyze the transfer of an acyl group to a substrate; NAT (N-Acyltransferase) is a large superfamily of enzymes that mostly catalyze the transfer of an acyl group to a substrate and are implicated in a variety of functions, ranging from bacterial antibiotic resistance to circadian rhythms in mammals. Members include GCN5-related N-Acetyltransferases (GNAT) such as Aminoglycoside N-acetyltransferases, Histone N-acetyltransferase (HAT) enzymes, and Serotonin N-acetyltransferase, which catalyze the transfer of an acetyl group to a substrate. The kinetic mechanism of most GNATs involves the ordered formation of a ternary complex: the reaction begins with Acetyl Coenzyme A (AcCoA) binding, followed by binding of substrate, then direct transfer of the acetyl group from AcCoA to the substrate, followed by product and subsequent CoA release. Other family members include Arginine/ornithine N-succinyltransferase, Myristoyl-CoA: protein N-myristoyltransferase, and Acyl-homoserinelactone synthase which have a similar catalytic mechanism but differ in types of acyl groups transferred. Leucyl/phenylalanyl-tRNA-protein transferase and FemXAB nonribosomal peptidyltransferases which catalyze similar peptidyltransferase reactions are also included.
Pssm-ID: 173926 [Multi-domain] Cd Length: 65 Bit Score: 37.26 E-value: 2.79e-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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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