InterPro : IPR020780

Name  Aspartyl-tRNA synthetase, archaea Short Name  Asp-tRNA-synth_arc
Type  Family Description  This family represents aspartyl-tRNA ligases 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). Aspartyl tRNA ligase is an alpha2 dimer that belongs to class IIb. Structural analysis combined with mutagenesis and enzymology data on the yeast enzyme point to a tRNA binding process that starts by a recognition event between the tRNA anticodon loop and the synthetase anticodon binding module []. The aminoacyl-tRNA synthetase (also known as aminoacyl-tRNA ligase) catalyse the attachment of an amino acid to its cognate transfer RNA molecule in a highly specific two-step reaction. These proteins differ widely in size and oligomeric state, and have limited sequence homology []. The 20 aminoacyl-tRNA synthetases are divided into two classes, I and II. Class I aminoacyl-tRNA synthetases contain a characteristic Rossman fold catalytic domain and are mostly monomeric []. Class II aminoacyl-tRNA synthetases share an anti-parallel beta-sheet fold flanked by alpha-helices [], and are mostly dimeric or multimeric, containing at least three conserved regions [, , ]. However, tRNA binding involves an alpha-helical structure that is conserved between class I and class II synthetases. In reactions catalysed by the class I aminoacyl-tRNA synthetases, the aminoacyl group is coupled to the 2'-hydroxyl of the tRNA, while, in class II reactions, the 3'-hydroxyl site is preferred. The synthetases specific for arginine, cysteine, glutamic acid, glutamine, isoleucine, leucine, methionine, tyrosine, tryptophan and valine belong to class I synthetases. The synthetases specific for alanine, asparagine, aspartic acid, glycine, histidine, lysine, phenylalanine, proline, serine, and threonine belong to class-II synthetases. Based on their mode of binding to the tRNA acceptor stem, both classes of tRNA synthetases have been subdivided into three subclasses, designated 1a, 1b, 1c and 2a, 2b, 2c.
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Sequence Features

GO Displayer

Proteins

InterPro protein domain ID --> Contigs

 

Other

0 Child Features

4 Contains

Id Name Short Name Type
IPR004364 Aminoacyl-tRNA synthetase, class II (D/K/N) aa-tRNA-synt_II Domain
IPR012340 Nucleic acid-binding, OB-fold NA-bd_OB-fold Domain
IPR004365 OB-fold nucleic acid binding domain, AA-tRNA synthetase-type NA-bd_OB_tRNA Domain
IPR006195 Aminoacyl-tRNA synthetase, class II aa-tRNA-synth_II Domain

0 Found In

1 Parent Features

Id Name Short Name Type
IPR004523 Aspartyl-tRNA synthetases Asp-tRNA_synthase Family

7 Publications

First Author Title Year Journal Volume Pages
Perona JJ Structural basis for transfer RNA aminoacylation by Escherichia coli glutaminyl-tRNA synthetase. 1993 Biochemistry 32 8758-71
Delarue M The aminoacyl-tRNA synthetase family: modules at work. 1993 Bioessays 15 675-87
Cusack S Sequence, structural and evolutionary relationships between class 2 aminoacyl-tRNA synthetases. 1991 Nucleic Acids Res 19 3489-98
Schimmel P Classes of aminoacyl-tRNA synthetases and the establishment of the genetic code. 1991 Trends Biochem Sci 16 1-3
Sugiura I The 2.0 A crystal structure of Thermus thermophilus methionyl-tRNA synthetase reveals two RNA-binding modules. 2000 Structure 8 197-208
Eriani G Partition of tRNA synthetases into two classes based on mutually exclusive sets of sequence motifs. 1990 Nature 347 203-6
Sauter C The free yeast aspartyl-tRNA synthetase differs from the tRNA(Asp)-complexed enzyme by structural changes in the catalytic site, hinge region, and anticodon-binding domain. 2000 J Mol Biol 299 1313-24



To cite PlanMine, please refer to the following publication:

Rozanski, A., Moon, H., Brandl, H., Martín-Durán, J. M., Grohme, M., Hüttner, K., Bartscherer, K., Henry, I., & Rink, J. C.
PlanMine 3.0—improvements to a mineable resource of flatworm biology and biodiversity
Nucleic Acids Research, gky1070. doi:10.1093/nar/gky1070 (2018)