Class II tRNA amino-acyl synthetase-like catalytic core domain. Class II amino acyl-tRNA ...
69-350
9.45e-74
Class II tRNA amino-acyl synthetase-like catalytic core domain. Class II amino acyl-tRNA synthetases (aaRS) share a common fold and generally attach an amino acid to the 3' OH of ribose of the appropriate tRNA. PheRS is an exception in that it attaches the amino acid at the 2'-OH group, like class I aaRSs. These enzymes are usually homodimers. This domain is primarily responsible for ATP-dependent formation of the enzyme bound aminoacyl-adenylate. The substrate specificity of this reaction is further determined by additional domains. Intererestingly, this domain is also found is asparagine synthase A (AsnA), in the accessory subunit of mitochondrial polymerase gamma and in the bacterial ATP phosphoribosyltransferase regulatory subunit HisZ.
The actual alignment was detected with superfamily member cd00774:
Pssm-ID: 444800 [Multi-domain] Cd Length: 254 Bit Score: 231.71 E-value: 9.45e-74
HGTP anticodon binding domain, as found at the C-terminus of histidyl, glycyl, threonyl and ...
354-433
5.73e-39
HGTP anticodon binding domain, as found at the C-terminus of histidyl, glycyl, threonyl and prolyl tRNA synthetases, which are classified as a group of class II aminoacyl-tRNA synthetases (aaRS). In aaRSs, the anticodon binding domain is responsible for specificity in tRNA-binding, so that the activated amino acid is transferred to a ribose 3' OH group of the appropriate tRNA only. This domain is also found in the accessory subunit of mitochondrial polymerase gamma (Pol gamma b).
The actual alignment was detected with superfamily member cd02426:
Pssm-ID: 469699 [Multi-domain] Cd Length: 128 Bit Score: 136.78 E-value: 5.73e-39
Glycyl-tRNA synthetase (GlyRS)-like class II core catalytic domain. GlyRS functions as a ...
69-350
9.45e-74
Glycyl-tRNA synthetase (GlyRS)-like class II core catalytic domain. GlyRS functions as a homodimer in eukaryotes, archaea and some bacteria and as a heterotetramer in the remainder of prokaryotes. It is responsible for the attachment of glycine to the 3' OH group of ribose of the appropriate tRNA. This domain is primarily responsible for ATP binding and hydrolysis. This alignment contains only sequences from the GlyRS form which homodimerizes. The heterotetramer glyQ is in a different family of class II aaRS. Class II assignment is based upon its structure and the presence of three characteristic sequence motifs. This domain is also found at the N-terminus of the accessory subunit of mitochondrial polymerase gamma (Pol gamma b). Pol gamma b stimulates processive DNA synthesis and is functional as a homodimer, which can associate with the catalytic subunit Pol gamma alpha to form a heterotrimer. Despite significant both structural and sequence similarity with GlyRS, Pol gamma b lacks conservation of several class II functional residues.
Pssm-ID: 238397 [Multi-domain] Cd Length: 254 Bit Score: 231.71 E-value: 9.45e-74
C-terminal domain of mitochondrial DNA polymerase gamma B subunit, which is required for ...
354-433
5.73e-39
C-terminal domain of mitochondrial DNA polymerase gamma B subunit, which is required for processivity. Polymerase gamma replicates and repairs mitochondrial DNA. The c-terminal domain of its B subunit is strikingly similar to the anticodon-binding domain of glycyl tRNA synthetase.
Pssm-ID: 239106 [Multi-domain] Cd Length: 128 Bit Score: 136.78 E-value: 5.73e-39
Glycyl-tRNA synthetase, class II [Translation, ribosomal structure and biogenesis]; ...
67-384
7.89e-19
Glycyl-tRNA synthetase, class II [Translation, ribosomal structure and biogenesis]; Glycyl-tRNA synthetase, class II is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 440192 [Multi-domain] Cd Length: 461 Bit Score: 88.24 E-value: 7.89e-19
Glycyl-tRNA synthetase (GlyRS)-like class II core catalytic domain. GlyRS functions as a ...
69-350
9.45e-74
Glycyl-tRNA synthetase (GlyRS)-like class II core catalytic domain. GlyRS functions as a homodimer in eukaryotes, archaea and some bacteria and as a heterotetramer in the remainder of prokaryotes. It is responsible for the attachment of glycine to the 3' OH group of ribose of the appropriate tRNA. This domain is primarily responsible for ATP binding and hydrolysis. This alignment contains only sequences from the GlyRS form which homodimerizes. The heterotetramer glyQ is in a different family of class II aaRS. Class II assignment is based upon its structure and the presence of three characteristic sequence motifs. This domain is also found at the N-terminus of the accessory subunit of mitochondrial polymerase gamma (Pol gamma b). Pol gamma b stimulates processive DNA synthesis and is functional as a homodimer, which can associate with the catalytic subunit Pol gamma alpha to form a heterotrimer. Despite significant both structural and sequence similarity with GlyRS, Pol gamma b lacks conservation of several class II functional residues.
Pssm-ID: 238397 [Multi-domain] Cd Length: 254 Bit Score: 231.71 E-value: 9.45e-74
C-terminal domain of mitochondrial DNA polymerase gamma B subunit, which is required for ...
354-433
5.73e-39
C-terminal domain of mitochondrial DNA polymerase gamma B subunit, which is required for processivity. Polymerase gamma replicates and repairs mitochondrial DNA. The c-terminal domain of its B subunit is strikingly similar to the anticodon-binding domain of glycyl tRNA synthetase.
Pssm-ID: 239106 [Multi-domain] Cd Length: 128 Bit Score: 136.78 E-value: 5.73e-39
Glycyl-tRNA synthetase, class II [Translation, ribosomal structure and biogenesis]; ...
67-384
7.89e-19
Glycyl-tRNA synthetase, class II [Translation, ribosomal structure and biogenesis]; Glycyl-tRNA synthetase, class II is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 440192 [Multi-domain] Cd Length: 461 Bit Score: 88.24 E-value: 7.89e-19
HGTP anticodon binding domain, as found at the C-terminus of histidyl, glycyl, threonyl and ...
380-433
2.52e-09
HGTP anticodon binding domain, as found at the C-terminus of histidyl, glycyl, threonyl and prolyl tRNA synthetases, which are classified as a group of class II aminoacyl-tRNA synthetases (aaRS). In aaRSs, the anticodon binding domain is responsible for specificity in tRNA-binding, so that the activated amino acid is transferred to a ribose 3' OH group of the appropriate tRNA only. This domain is also found in the accessory subunit of mitochondrial polymerase gamma (Pol gamma b).
Pssm-ID: 238379 [Multi-domain] Cd Length: 94 Bit Score: 53.94 E-value: 2.52e-09
GlyRS Glycyl-anticodon binding domain. GlyRS belongs to class II aminoacyl-tRNA synthetases ...
356-413
7.45e-04
GlyRS Glycyl-anticodon binding domain. GlyRS belongs to class II aminoacyl-tRNA synthetases (aaRS). This alignment contains the anticodon binding domain, which is responsible for specificity in tRNA-binding, so that the activated amino acid is transferred to a ribose 3' OH group of the appropriate tRNA only.
Pssm-ID: 238435 [Multi-domain] Cd Length: 121 Bit Score: 39.08 E-value: 7.45e-04
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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