Annotations: 3H97

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases	8038697	3001786	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotidylyl transferase	8038698	3001541	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotidylyl transferase	8038698	3001541	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Methionyl-tRNA synthetase (MetRS) Zn-domain	8038699	3001215	SCOP2B (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	PF09334,PF19303	e3h97A3	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: PF09334,PF19303	ECOD (1.6)
A	PF09334	e3h97A1	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: PF09334	ECOD (1.6)
A	F_UNCLASSIFIED	e3h97A2	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF09334	e3h97A4	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: PF09334	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	2.20.28.20	Mainly Beta	Single Sheet	Rubrerythrin, domain 2	Methionyl-tRNA synthetase, Zn-domain	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 identical protein binding protein binding protein homodimerization activity protein dimerization activity 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 cation binding transition metal ion binding zinc ion binding metal ion binding RNA binding tRNA binding nucleic acid binding	amino acid activation tRNA aminoacylation methionyl-tRNA aminoacylation cellular biosynthetic process organonitrogen compound biosynthetic process RNA metabolic process amino acid metabolic process cellular nitrogen compound biosynthetic process nucleobase-containing compound metabolic process organic substance metabolic process heterocycle metabolic process organic substance biosynthetic process nitrogen compound metabolic process protein metabolic process amino acid activation tRNA aminoacylation methionyl-tRNA aminoacylation cellular biosynthetic process organonitrogen compound biosynthetic process RNA metabolic process amino acid metabolic process cellular nitrogen compound biosynthetic process nucleobase-containing compound metabolic process organic substance metabolic process heterocycle metabolic process organic substance biosynthetic process nitrogen compound metabolic process protein metabolic process amide metabolic process organonitrogen compound metabolic process cellular metabolic process cellular nitrogen compound metabolic process primary metabolic process amide biosynthetic process translation gene expression tRNA aminoacylation for protein translation macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process organic cyclic compound metabolic process peptide biosynthetic process biosynthetic process ncRNA metabolic process metabolic process cellular process macromolecule metabolic process cellular aromatic compound metabolic process peptide metabolic process	membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol

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 National Science Foundation (DBI-1832184), 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 R01GM133198.