Annotations: 2JAN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	S4_1	e2janA2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Alpha-L RNA-binding motif	F: S4_1	ECOD (1.6)
A	tRNA-synt_1b_1	e2janA1	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: tRNA-synt_1b_1	ECOD (1.6)
B	S4_1	e2janB1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Alpha-L RNA-binding motif	F: S4_1	ECOD (1.6)
B	tRNA-synt_1b_1	e2janB2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: tRNA-synt_1b_1	ECOD (1.6)
C	S4_1	e2janC1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Alpha-L RNA-binding motif	F: S4_1	ECOD (1.6)
C	tRNA-synt_1b_1	e2janC2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: tRNA-synt_1b_1	ECOD (1.6)
D	S4_1	e2janD1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Alpha-L RNA-binding motif	F: S4_1	ECOD (1.6)
D	tRNA-synt_1b_1	e2janD2	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains (From Topology)	T: HUP domains	F: tRNA-synt_1b_1	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	1.10.240.10	Mainly Alpha	Orthogonal Bundle	Tyrosyl-Transfer RNA Synthetase	Tyrosyl-Transfer RNA Synthetase	CATH (4.3.0)
A	3.10.290.10	Alpha Beta	Roll	Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region	Chain A	CATH (4.3.0)
B	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
B	1.10.240.10	Mainly Alpha	Orthogonal Bundle	Tyrosyl-Transfer RNA Synthetase	Tyrosyl-Transfer RNA Synthetase	CATH (4.3.0)
B	3.10.290.10	Alpha Beta	Roll	Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region	Chain A	CATH (4.3.0)
C	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
C	1.10.240.10	Mainly Alpha	Orthogonal Bundle	Tyrosyl-Transfer RNA Synthetase	Tyrosyl-Transfer RNA Synthetase	CATH (4.3.0)
C	3.10.290.10	Alpha Beta	Roll	Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region	Chain A	CATH (4.3.0)
D	3.40.50.620	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HUPs	CATH (4.3.0)
D	1.10.240.10	Mainly Alpha	Orthogonal Bundle	Tyrosyl-Transfer RNA Synthetase	Tyrosyl-Transfer RNA Synthetase	CATH (4.3.0)
D	3.10.290.10	Alpha Beta	Roll	Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00579	tRNA synthetases class I (W and Y) (tRNA-synt_1b)	tRNA synthetases class I (W and Y)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	TYROSYL-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 tyrosine-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 nucleic acid binding	amino acid activation tRNA aminoacylation cellular metabolic process RNA metabolic process cellular nitrogen compound metabolic process primary metabolic process amino acid metabolic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process heterocycle metabolic process ncRNA metabolic process amino acid activation tRNA aminoacylation cellular metabolic process RNA metabolic process cellular nitrogen compound metabolic process primary metabolic process amino acid metabolic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process heterocycle metabolic process ncRNA metabolic process nitrogen compound metabolic process metabolic process cellular process macromolecule metabolic process cellular aromatic compound metabolic process tyrosyl-tRNA aminoacylation cellular biosynthetic process organonitrogen compound biosynthetic process organic substance biosynthetic process protein metabolic process organonitrogen compound metabolic process translation gene expression tRNA aminoacylation for protein translation macromolecule biosynthetic process biosynthetic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol cell periphery plasma membrane membrane external encapsulating structure cell wall peptidoglycan-based cell wall

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR002942	RNA-binding S4 domain	Domain
A, B, C, D	IPR024107	Tyrosine-tRNA ligase, bacterial-type, type 1	Family
A, B, C, D	IPR001412	Aminoacyl-tRNA synthetase, class I, conserved site	Conserved Site
A, B, C, D	IPR014729	Rossmann-like alpha/beta/alpha sandwich fold	Homologous Superfamily
A, B, C, D	IPR002307	Tyrosine-tRNA ligase	Family
A, B, C, D	IPR002305	Aminoacyl-tRNA synthetase, class Ic	Family
A, B, C, D	IPR024088	Tyrosine-tRNA ligase, bacterial-type	Family
A, B, C, D	IPR036986	RNA-binding S4 domain superfamily	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.