Annotations: 1RQG

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1rqga1	All alpha proteins	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	Methionyl-tRNA synthetase (MetRS)	(Pyrococcus abyssi ) [TaxId: 29292 ],	SCOPe (2.08)
A	d1rqga2	Alpha and beta proteins (a/b)	Adenine nucleotide alpha hydrolase-like	Nucleotidylyl transferase	Class I aminoacyl-tRNA synthetases (RS), catalytic domain	Methionyl-tRNA synthetase (MetRS)	(Pyrococcus abyssi ) [TaxId: 29292 ],	SCOPe (2.08)
A	d1rqga3	Small proteins	Rubredoxin-like	Methionyl-tRNA synthetase (MetRS), Zn-domain	Methionyl-tRNA synthetase (MetRS), Zn-domain	Methionyl-tRNA synthetase (MetRS), Zn-domain	(Pyrococcus abyssi ) [TaxId: 29292 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	8026522	4000856	SCOP2 (2022-06-29)
A	SCOP2 Family	Class I aminoacyl-tRNA synthetases (RS), catalytic domain	8026523	4003807	SCOP2 (2022-06-29)
A	SCOP2 Family	Methionyl-tRNA synthetase (MetRS), Zn-domain	8026525	4003662	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	8038901	3001786	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleotidylyl transferase	8038902	3001541	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Methionyl-tRNA synthetase (MetRS), Zn-domain	8038904	3001215	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Anticodon_1,tRNA-synt_1g	e1rqgA1	A: alpha bundles	X: 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 synthetases	F: Anticodon_1,tRNA-synt_1g	ECOD (1.6)
A	tRNA-synt_1g	e1rqgA2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: tRNA-synt_1g	ECOD (1.6)
A	tRNA-synt_1g_1	e1rqgA4	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: tRNA-synt_1g_1	ECOD (1.6)
A	UNK_F_TYPE	e1rqgA3	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: UNK_F_TYPE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
A	2.170.220.10	Mainly Beta	Beta Complex	Methionyl-trna Synthetase	domain 2	CATH (4.3.0)
A	1.10.730.10	Mainly Alpha	Orthogonal Bundle	Isoleucyl-tRNA Synthetase	Domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09334	tRNA synthetases class I (M) (tRNA-synt_1g)	tRNA synthetases class I (M)	-	Family
A	PF19303	Anticodon binding domain of methionyl tRNA ligase (Anticodon_3)	Anticodon binding domain of methionyl tRNA ligase	This domain is found in methionyl tRNA ligase. The domain binds to the anticodon of the tRNA ligase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Methionyl-tRNA synthetase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding ligase activity, forming carbon-oxygen bonds aminoacyl-tRNA ligase activity methionine-tRNA ligase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA catalytic activity ligase activity RNA binding tRNA binding nucleic acid binding cation binding metal ion binding	amino acid activation tRNA aminoacylation methionyl-tRNA aminoacylation RNA metabolic process primary metabolic process amino acid metabolic process translation gene expression tRNA aminoacylation for protein translation macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process biosynthetic process amino acid activation tRNA aminoacylation methionyl-tRNA aminoacylation RNA metabolic process primary metabolic process amino acid metabolic process translation gene expression tRNA aminoacylation for protein translation macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process biosynthetic process metabolic process cellular process macromolecule metabolic process protein metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023458	Methionine-tRNA ligase, type 1	Family
A	IPR041872	Methionyl-tRNA synthetase, anticodon-binding domain	Domain
A	IPR001412	Aminoacyl-tRNA synthetase, class I, conserved site	Conserved Site
A	IPR002547	tRNA-binding domain	Domain
A	IPR015413	Methionyl/Leucyl tRNA synthetase	Domain
A	IPR014729	Rossmann-like alpha/beta/alpha sandwich fold	Homologous Superfamily
A	IPR004495	Methionyl-tRNA synthetase, beta subunit, C-terminal	Domain
A	IPR014758	Methionyl-tRNA synthetase	Family
A	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A	IPR009080	Aminoacyl-tRNA synthetase, class Ia, anticodon-binding	Homologous Superfamily
A	IPR033911	Methioninyl-tRNA synthetase core domain	Domain
A	IPR029038	Methionyl-tRNA synthetase, Zn-domain	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.