Protein Domain : IPR002305

Type:  Family Name:  Aminoacyl-tRNA synthetase, class Ic
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.The class Ia aminoacyl-tRNA synthetases consist of the isoleucyl, methionyl, valyl, leucyl, cysteinyl, and arginyl-tRNA synthetases; the class Ib include the glutamyl and glutaminyl-tRNA synthetases, and the class Ic are the tyrosyl and tryptophanyl-tRNA synthetases[]. Short Name:  aa-tRNA-synth_Ic

2 Child Features

DB identifier Type Name
IPR002307 Family Tyrosine-tRNA ligase
IPR002306 Family Tryptophan-tRNA ligase

2 Contains

DB identifier Type Name
IPR014729 Domain Rossmann-like alpha/beta/alpha sandwich fold
IPR001412 Conserved_site Aminoacyl-tRNA synthetase, class I, conserved site

1 Cross References

Identifier
PF00579

0 Found In

4 GO Annotations

GO Term Gene Name
GO:0000166 IPR002305
GO:0004812 IPR002305
GO:0005524 IPR002305
GO:0006418 IPR002305

4 Ontology Annotations

GO Term Gene Name
GO:0000166 IPR002305
GO:0004812 IPR002305
GO:0005524 IPR002305
GO:0006418 IPR002305

0 Parent Features

3256 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
92189 D8RFW4 PAC:15416236 Selaginella moellendorffii 358  
442375 D8RSX9 PAC:15410132 Selaginella moellendorffii 390  
111886 D8S9Y2 PAC:15413613 Selaginella moellendorffii 467  
130546 D8T2H1 PAC:15422603 Selaginella moellendorffii 333  
140742 D8QSG6 PAC:15409005 Selaginella moellendorffii 365  
91374 D8RE22 PAC:15414878 Selaginella moellendorffii 359  
evm.model.supercontig_1142.2 PAC:16406167 Carica papaya 317  
evm.model.supercontig_13.153 PAC:16407662 Carica papaya 400  
evm.model.supercontig_7.214 PAC:16425125 Carica papaya 418  
29708.m000188 B9SW26 PAC:16806376 Ricinus communis 405  
29794.m003408 B9RS09 PAC:16808767 Ricinus communis 412  
29822.m003488 B9RUP0 PAC:16809857 Ricinus communis 413  
30131.m006932 B9RGT2 PAC:16818758 Ricinus communis 492  
Cucsa.093940.1 PAC:16957675 Cucumis sativus 475  
Cucsa.174080.1 PAC:16966647 Cucumis sativus 303  
Cucsa.303200.7 PAC:16975874 Cucumis sativus 332  
Cucsa.303200.2 A0A0A0KMK0 PAC:16975869 Cucumis sativus 387  
Cucsa.312470.2 A0A0A0LEU9 PAC:16976848 Cucumis sativus 414  
Cucsa.312470.1 PAC:16976847 Cucumis sativus 455  
orange1.1g037749m A0A067FBD3 PAC:18127482 Citrus sinensis 495  
orange1.1g047474m A0A067F2X8 PAC:18120559 Citrus sinensis 326  
orange1.1g016603m A0A067GMJ2 PAC:18096600 Citrus sinensis 386  
orange1.1g016437m A0A067GMI8 PAC:18096599 Citrus sinensis 389  
orange1.1g018259m A0A067GX40 PAC:18096601 Citrus sinensis 359  
orange1.1g020943m A0A067GMJ7 PAC:18096602 Citrus sinensis 319  
orange1.1g020977m A0A067GMJ7 PAC:18096604 Citrus sinensis 319  
orange1.1g020961m A0A067GMJ7 PAC:18096603 Citrus sinensis 319  
orange1.1g021028m A0A067GWR7 PAC:18096605 Citrus sinensis 318  
orange1.1g023084m A0A067GX43 PAC:18096606 Citrus sinensis 287  
orange1.1g024523m A0A067GWS0 PAC:18096607 Citrus sinensis 266  

7 Publications

First Author Title Year Journal Volume Pages PubMed ID
            8364025
            8274143
            1852601
            2053131
            10673435
            2203971
            11590011