>gnl|CDD|239813 cd04318, EcAsnRS_like_N, EcAsnRS_like_N: N-terminal, anticodon recognition domain of the type found in Escherichia coli asparaginyl-tRNA synthetase (AsnRS) and, in Arabidopsis thaliana and Saccharomyces cerevisiae mitochondrial (mt) AsnRS
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The enzymes in this group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial protein synthesis. S. cerevisiae mtAsnRS can charge E.coli tRNA with asparagines. Mutations in the gene for S. cerevisiae mtAsnRS has been found to induce a "petite" phenotype typical for a mutation in a nuclear gene that results in a non-functioning mitochondrial protein synthesis system. Length = 82
In a multiple sequence alignment of representative asparaginyl-tRNA synthetases (asnS), archaeal/eukaryotic type aspartyl-tRNA synthetases (aspS_arch), and bacterial type aspartyl-tRNA synthetases (aspS_bact), there is a striking similarity between asnS and aspS_arch in gap pattern and in sequence, and a striking divergence of aspS_bact. Consequently, a separate model was built for each of the three groups. This model, asnS, represents asparaginyl-tRNA synthetases from the three domains of life. Some species lack this enzyme and charge tRNA(asn) by misacylation with Asp, followed by transamidation of Asp to Asn [Protein synthesis, tRNA aminoacylation]. Length = 453
>cd04318 EcAsnRS_like_N EcAsnRS_like_N: N-terminal, anticodon recognition domain of the type found in Escherichia coli asparaginyl-tRNA synthetase (AsnRS) and, in Arabidopsis thaliana and Saccharomyces cerevisiae mitochondrial (mt) AsnRS
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The enzymes in this group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial
>cd04321 ScAspRS_mt_like_N ScAspRS_mt_like_N: N-terminal, anticodon recognition domain of the type found in Saccharomyces cerevisiae mitochondrial (mt) aspartyl-tRNA synthetase (AspRS)
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The enzymes in this fungal group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial protein synthesis. Mutations in the gene for
>COG0017 AsnS Aspartyl/asparaginyl-tRNA synthetases [Translation, ribosomal structure and biogenesis]
These enzymes are homodimeric class 2b aminoacyl-tRNA synthetases (aaRSs). This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Included in this group are E. coli LysS and LysU. These two isoforms of LysRS are encoded by distinct genes which are differently regulated. Eukaryotes contain 2 sets of aaRSs, both of which encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial protein
>cd04100 Asp_Lys_Asn_RS_N Asp_Lys_Asn_RS_N: N-terminal, anticodon recognition domain of class 2b aminoacyl-tRNA synthetases (aaRSs)
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. Class 2b aaRSs include the homodimeric aspartyl-, asparaginyl-, and lysyl-tRNA synthetases (AspRS, AsnRS, and LysRS). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial protein synthesis. Included in this group are archeal and archeal-like A
>cd04323 AsnRS_cyto_like_N AsnRS_cyto_like_N: N-terminal, anticodon recognition domain of the type found in human and Saccharomyces cerevisiae cytoplasmic asparaginyl-tRNA synthetase (AsnRS), in Brugia malayai AsnRs and, in various putative bacterial AsnRSs
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The enzymes in this group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic synthesis, whereas the other exclusively with
>cd04319 PhAsnRS_like_N PhAsnRS_like_N: N-terminal, anticodon recognition domain of the type found in Pyrococcus horikoshii AsnRS asparaginyl-tRNA synthetase (AsnRS)
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The archeal enzymes in this group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose.
>cd04316 ND_PkAspRS_like_N ND_PkAspRS_like_N: N-terminal, anticodon recognition domain of the type found in the homodimeric non-discriminating (ND) Pyrococcus kodakaraensis aspartyl-tRNA synthetase (AspRS)
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. P. kodakaraensis AspRS is a class 2b aaRS. aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. P. kodakaraensis ND-AspRS can charge both tRNAAsp and tRNAAsn. Some of the enzymes in this group may be discriminating, based on the presence of homologs of asparaginyl-tRNA synthetase (AsnRS) in their completed genomes.
>cd04320 AspRS_cyto_N AspRS_cyto_N: N-terminal, anticodon recognition domain of the type found in Saccharomyces cerevisiae and human cytoplasmic aspartyl-tRNA synthetase (AspRS)
This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. The enzymes in this group are homodimeric class2b aminoacyl-tRNA synthetases (aaRSs). aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic protein synthesis, whereas the other exclusively with mitochondrial protein synthesis.
>cd04317 EcAspRS_like_N EcAspRS_like_N: N-terminal, anticodon recognition domain of the type found in Escherichia coli aspartyl-tRNA synthetase (AspRS), the human mitochondrial (mt) AspRS-2, the discriminating (D) Thermus thermophilus AspRS-1, and the nondiscriminating (ND) Helicobacter pylori AspRS
These homodimeric enzymes are class2b aminoacyl-tRNA synthetases (aaRSs). This domain is a beta-barrel domain (OB fold) involved in binding the tRNA anticodon stem-loop. aaRSs catalyze the specific attachment of amino acids (AAs) to their cognate tRNAs during protein biosynthesis. This 2-step reaction involves i) the activation of the AA by ATP in the presence of magnesium ions, followed by ii) the transfer of the activated AA to the terminal ribose of tRNA. In the case of the class2b aaRSs, the activated AA is attached to the 3'OH of the terminal ribose. Eukaryotes contain 2 sets of aaRSs, both of which are encoded by the nuclear genome. One set concerns with cytoplasmic synthesis, wh
In a multiple sequence alignment of representative asparaginyl-tRNA synthetases (asnS), archaeal/eukaryotic type aspartyl-tRNA synthetases (aspS_arch), and bacterial type aspartyl-tRNA synthetases (aspS_bact), there is a striking similarity between asnS and aspS_arch in gap pattern and in sequence, and a striking divergence of aspS_bact. Consequently, a separate model was built for each of the three groups. This model, asnS, represents asparaginyl-tRNA synthetases from the three domains of life. Some species lack this enzyme and charge tRNA(asn) by misacylation with Asp, followed by transamidation of Asp to Asn.
In a multiple sequence alignment of representative asparaginyl-tRNA synthetases (asnS), archaeal/eukaryotic type aspartyl-tRNA synthetases (aspS_arch), and bacterial type aspartyl-tRNA synthetases (aspS_bact), there is a striking similarity between asnS and aspS_arch in gap pattern and in sequence, and a striking divergence of aspS_bact. Consequently, a separate model was built for each of the three groups. This model, aspS_arch, represents aspartyl-tRNA synthetases from the eukaryotic cytosol and from the Archaea. In some species, this enzyme aminoacylates tRNA for both Asp and Asn; Asp-tRNA(asn) is subsequently transamidated to Asn-tRNA(asn).
This model represents the lysyl-tRNA synthetases that are class II amino-acyl tRNA synthetases. It includes all eukaryotic and most bacterial examples of the enzyme, but not archaeal or spirochete forms.
In a multiple sequence alignment of representative asparaginyl-tRNA synthetases (asnS), archaeal/eukaryotic type aspartyl-tRNA synthetases (aspS_arch), and bacterial type aspartyl-tRNA synthetases (aspS_bact), there is a striking similarity between asnS and aspS_arch in gap pattern and in sequence, and a striking divergence of aspS_bact. Consequently, a separate model was built for each of the three groups. This model, aspS_bact, represents aspartyl-tRNA synthetases from the Bacteria and from mitochondria. In some species, this enzyme aminoacylates tRNA for both Asp and Asn; Asp-tRNA(asn) is subsequently transamidated to Asn-tRNA(asn). This model generates very low scores for the archaeal type of aspS and for asnS; scores between the trusted and noise cutoffs represent fragmentary sequences.
>PF01336 tRNA_anti-codon: OB-fold nucleic acid binding domain; InterPro: IPR004365 The OB-fold (oligonucleotide/oligosaccharide-binding fold) is found in all three kingdoms and its common architecture presents a binding face that has adapted to bind different ligands
The OB-fold is a five/six-stranded closed beta-barrel formed by 70-80 amino acid residues. The strands are connected by loops of varying length which form the functional appendages of the protein. The majority of OB-fold proteins use the same face for ligand binding or as an active site. Different OB-fold proteins use this 'fold-related binding face' to, variously, bind oligosaccharides, oligonucleotides, proteins, metal ions and catalytic substrates. This entry contains OB-fold domains that bind to nucleic acids []. It includes the anti-codon binding domain of lysyl, aspartyl, and asparaginyl-tRNA synthetases (See IPR004364 from INTERPRO). Aminoacyl-tRNA synthetases catalyse the addition of an amino acid to the appropriate tRNA molecule 6.1.1 from EC. This domain is found in RecG helicase involved in DNA repair. Replication factor A is a heterotrimeric complex, that contains a subunit in this family [, ]. This domain is also found at the C terminus of bacterial DNA polymerase III alpha chain.; GO: 0003676 nucleic acid binding; PDB: 1BBU_A 1KRS_A 1BBW_A 1KRT_A 1EQR_B 1IL2_B 1C0A_A 3KFU_A 1EOV_A 1ASY_A ....
>PF00458 WHEP-TRS: WHEP-TRS domain; InterPro: IPR000738 A conserved domain of 46 amino acids, called WHEP-TRS has been shown [] to exist in a number of higher eukaryote aminoacyl-transfer RNA synthetases
This domain is present one to six times in the several enzymes. There are three copies in mammalian multifunctional aminoacyl-tRNA synthetase in a region that separates the N-terminal glutamyl-tRNA synthetase domain from the C-terminal prolyl-tRNA synthetase domain, and six copies in the intercatalytic region of the Drosophila enzyme. The domain is found at the N-terminal extremity of the mammalian tryptophanyl- tRNA synthetase and histidyl-tRNA synthetase, and the mammalian, insect, nematode and plant glycyl- tRNA synthetases []. This domain could contain a central alpha-helical region and may play a role in the association of tRNA-synthetases into multienzyme complexes.; GO: 0004812 aminoacyl-tRNA ligase activity, 0005524 ATP binding, 0006418 tRNA aminoacylation for protein translation; PDB: 1R1B_A 1D2D_A 1X59_A 1FYJ_A 2ZT8_A 2ZXF_A 2ZT7_A 2ZT6_A 2PME_A 2ZT5_A ....
This short RNA-binding domain is found at the N-terminus of HisRS in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). This domain consists of a helix- turn- helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
This short RNA-binding domain is found at the C-terminus of MetRS in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). It is repeated in Drosophila MetRS. This domain consists of a helix-turn-helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
>KOG0556 consensus Aspartyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]
>cd04489 ExoVII_LU_OBF ExoVII_LU_OBF: A subfamily of OB folds corresponding to the N-terminal OB-fold domain of Escherichia coli exodeoxyribonuclease VII (ExoVII) large subunit
E. coli ExoVII is composed of two non-identical subunits. E. coli ExoVII is a single-strand-specific exonuclease which degrades ssDNA from both 3-prime and 5-prime ends. ExoVII plays a role in methyl-directed mismatch repair in vivo. ExoVII may also guard the genome from mutagenesis by removing excess ssDNA, since the build up of ssDNA would lead to SOS induction and PolIV-dependent mutagenesis.
>4ex5_A Lysine--tRNA ligase; structural genomics, niaid, national institute of allergy AN infectious diseases; HET: LYS; 2.40A {Burkholderia thailandensis}
