InterPro : IPR004364

Name  Aminoacyl-tRNA synthetase, class II (D/K/N) Short Name  aa-tRNA-synt_II
Type  Domain Description  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.This entry includes the asparagine, aspartic acid and lysine tRNA synthetases.
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Sequence Features

GO Displayer

Proteins

InterPro protein domain ID --> Contigs

 

Other

1 Child Features

Id Name Short Name Type
IPR018149 Lysyl-tRNA synthetase, class II, C-terminal Lys-tRNA-synth_II_C Domain

1 Contains

Id Name Short Name Type
IPR004115 GAD-like domain GAD-like Domain

6 Found In

Id Name Short Name Type
IPR004522 Asparagine-tRNA ligase Asn-tRNA-ligase Family
IPR004523 Aspartyl-tRNA synthetases Asp-tRNA_synthase Family
IPR004524 Aspartate-tRNA ligase, class IIb, bacterial/mitochondrial-type Asp-tRNA-ligase_IIb_bac/mt Family
IPR002313 Lysine-tRNA ligase, class II Lys-tRNA-ligase_II Family
IPR002312 Aspartyl/Asparaginyl-tRNA synthetase, class IIb Asp/Asn-tRNA-synth_IIb Family
IPR020780 Aspartyl-tRNA synthetase, archaea Asp-tRNA-synth_arc Family

1 Parent Features

Id Name Short Name Type
IPR006195 Aminoacyl-tRNA synthetase, class II aa-tRNA-synth_II Domain

6 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



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)