Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
B [auth A]SCOP2 FamilyArginyl-tRNA synthetase (ArgRS) N-terminal 'additional' domain8020574 4001410 SCOP2 (2022-06-29)
B [auth A]SCOP2 FamilyClass I aminoacyl-tRNA synthetases (RS) catalytic domain8020573 4003807 SCOP2 (2022-06-29)
B [auth A]SCOP2 FamilyAnticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases8020571 4000856 SCOP2 (2022-06-29)
B [auth A]SCOP2 SuperfamilyArginyl-tRNA synthetase (ArgRS) N-terminal 'additional' domain8032954 3001515 SCOP2 (2022-06-29)
B [auth A]SCOP2 SuperfamilyNucleotidylyl transferase8032953 3001541 SCOP2 (2022-06-29)
B [auth A]SCOP2 SuperfamilyAnticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases8032951 3001786 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
B [auth A]DALR_1,tRNA-synt_1de1f7uA1 A: alpha bundlesX: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases (From Topology)H: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases (From Topology)T: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetasesF: DALR_1,tRNA-synt_1dECOD (1.6)
B [auth A]Arg_tRNA_synt_Ne1f7uA2 A: a+b two layersX: RRF/tRNA synthetase additional domain-likeH: Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domain (From Topology)T: Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domainF: Arg_tRNA_synt_NECOD (1.6)
B [auth A]tRNA-synt_1de1f7uA3 A: a/b three-layered sandwichesX: HUP domain-likeH: HUP domains (From Topology)T: HUP domainsF: tRNA-synt_1dECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B [auth A]3.40.50.620 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold HUPsCATH (4.3.0)
B [auth A]1.10.730.10 Mainly Alpha Orthogonal Bundle Isoleucyl-tRNA Synthetase Domain 1CATH (4.3.0)
B [auth A]3.30.1360.70 Alpha Beta 2-Layer Sandwich Gyrase A domain 2CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
B [auth A]PF03485Arginyl tRNA synthetase N terminal domain (Arg_tRNA_synt_N)Arginyl tRNA synthetase N terminal domainThis domain is found at the amino terminus of Arginyl tRNA synthetase, also called additional domain 1 (Add-1). It is about 140 residues long and it has been suggested that this domain will be involved in tRNA recognition [1].Domain
B [auth A]PF00750tRNA synthetases class I (R) (tRNA-synt_1d)tRNA synthetases class I (R)- Family
B [auth A]PF05746DALR anticodon binding domain (DALR_1)DALR anticodon binding domainThis all alpha helical domain is the anticodon binding domain in Arginyl and glycyl tRNA synthetase. This domain is known as the DALR domain after characteristic conserved amino acids [1].Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth B]TRNA(ARG)---
B [auth A]ARGINYL-TRNA SYNTHETASE

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
arginine-tRNA ligase  M-CSA #235

Arginyl-tRNA synthetase (ArgRS), isolated from Saccharomyces cerevisiae, catalyses the esterification of arginine to the 3'-terminal adenosine of a tRNA molecule. The reaction proceeds via an aminoacyl-adenylate intermediate and is ATP dependent.

Although the tRNA molecule is not directly involved in the formation of the arginyl-adenylate intermediate, the tRNA must be bound to the enzyme before the reaction can occur. This may be due to conformational changes induced in the enzyme upon binding tRNA, as suggested for other aminoacyl-tRNA synthetases. ArgRS is a class 1a aminoacyl-tRNA synthease based on its structure, or class 1C when considering its requirement of tRNA.

Defined by 3 residues: LYS:B-156 [auth A-156]HIS:B-159 [auth A-159]HIS:B-162 [auth A-162]
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