nucleotidyl transferase (NT) family protein contains a conserved dinucleotide-binding domain; the NT superfamily includes the class I amino-acyl tRNA synthetases, pantothenate synthetase (PanC), ATP sulfurylase, and cytidylyltransferases
nucleotidyl transferase superfamily; nt_trans (nucleotidyl transferase) This superfamily ...
37-301
2.32e-115
nucleotidyl transferase superfamily; nt_trans (nucleotidyl transferase) This superfamily includes the class I amino-acyl tRNA synthetases, pantothenate synthetase (PanC), ATP sulfurylase, and the cytidylyltransferases, all of which have a conserved dinucleotide-binding domain.
The actual alignment was detected with superfamily member cd00814:
Pssm-ID: 469580 [Multi-domain] Cd Length: 319 Bit Score: 339.12 E-value: 2.32e-115
catalytic core domain of methioninyl-tRNA synthetases; Methionine tRNA synthetase (MetRS) catalytic core domain. This class I enzyme aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. MetRS, which consists of the core domain and an anti-codon binding domain, functions as a monomer. However, in some species the anti-codon binding domain is followed by an EMAP domain. In this case, MetRS functions as a homodimer. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. As a result of a deletion event, MetRS has a significantly shorter core domain insertion than IleRS, ValRS, and LeuR. Consequently, the MetRS insertion lacks the editing function.
Pssm-ID: 173907 [Multi-domain] Cd Length: 319 Bit Score: 339.12 E-value: 2.32e-115
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA ...
37-301
2.70e-107
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA synthetase is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 439913 [Multi-domain] Cd Length: 544 Bit Score: 326.30 E-value: 2.70e-107
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ...
39-299
2.00e-79
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ligase. This model appears to recognize the methionyl-tRNA synthetase of every species, including eukaryotic cytosolic and mitochondrial forms. The UPGMA difference tree calculated after search and alignment according to this model shows an unusual deep split between two families of MetG. One family contains forms from the Archaea, yeast cytosol, spirochetes, and E. coli, among others. The other family includes forms from yeast mitochondrion, Synechocystis sp., Bacillus subtilis, the Mycoplasmas, Aquifex aeolicus, and Helicobacter pylori. The E. coli enzyme is homodimeric, although monomeric forms can be prepared that are fully active. Activity of this enzyme in bacteria includes aminoacylation of fMet-tRNA with Met; subsequent formylation of the Met to fMet is catalyzed by a separate enzyme. Note that the protein from Aquifex aeolicus is split into an alpha (large) and beta (small) subunit; this model does not include the C-terminal region corresponding to the beta chain. [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 273058 [Multi-domain] Cd Length: 530 Bit Score: 253.84 E-value: 2.00e-79
catalytic core domain of methioninyl-tRNA synthetases; Methionine tRNA synthetase (MetRS) catalytic core domain. This class I enzyme aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. MetRS, which consists of the core domain and an anti-codon binding domain, functions as a monomer. However, in some species the anti-codon binding domain is followed by an EMAP domain. In this case, MetRS functions as a homodimer. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. As a result of a deletion event, MetRS has a significantly shorter core domain insertion than IleRS, ValRS, and LeuR. Consequently, the MetRS insertion lacks the editing function.
Pssm-ID: 173907 [Multi-domain] Cd Length: 319 Bit Score: 339.12 E-value: 2.32e-115
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA ...
37-301
2.70e-107
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA synthetase is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 439913 [Multi-domain] Cd Length: 544 Bit Score: 326.30 E-value: 2.70e-107
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ...
39-299
2.00e-79
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ligase. This model appears to recognize the methionyl-tRNA synthetase of every species, including eukaryotic cytosolic and mitochondrial forms. The UPGMA difference tree calculated after search and alignment according to this model shows an unusual deep split between two families of MetG. One family contains forms from the Archaea, yeast cytosol, spirochetes, and E. coli, among others. The other family includes forms from yeast mitochondrion, Synechocystis sp., Bacillus subtilis, the Mycoplasmas, Aquifex aeolicus, and Helicobacter pylori. The E. coli enzyme is homodimeric, although monomeric forms can be prepared that are fully active. Activity of this enzyme in bacteria includes aminoacylation of fMet-tRNA with Met; subsequent formylation of the Met to fMet is catalyzed by a separate enzyme. Note that the protein from Aquifex aeolicus is split into an alpha (large) and beta (small) subunit; this model does not include the C-terminal region corresponding to the beta chain. [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 273058 [Multi-domain] Cd Length: 530 Bit Score: 253.84 E-value: 2.00e-79
catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases; Catalytic ...
39-301
6.23e-39
catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases; Catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases. These class I enzymes are all monomers. However, in some species, MetRS functions as a homodimer, as a result of an additional C-terminal domain. These enzymes aminoacylate the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. Enzymes in this subfamily share an insertion in the core domain, which is subject to both deletions and rearrangements. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids. MetRS has a significantly shorter insertion, which lacks the editing function.
Pssm-ID: 185674 [Multi-domain] Cd Length: 312 Bit Score: 141.79 E-value: 6.23e-39
catalytic core domain of class I amino acyl-tRNA synthetase; Class I amino acyl-tRNA ...
41-118
1.71e-06
catalytic core domain of class I amino acyl-tRNA synthetase; Class I amino acyl-tRNA synthetase (aaRS) catalytic core domain. These enzymes are mostly monomers which aminoacylate the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding.
Pssm-ID: 173901 [Multi-domain] Cd Length: 143 Bit Score: 47.09 E-value: 1.71e-06
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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