Annotations: 4X5O

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e4x5oB1	A: CBS-domain	X: Porins	H: Invertebrate chitin-binding proteins	T:	F:	ECOD (20:10:01)
A		e4x5oA1	A: CBS-domain	X: Porins	H: Invertebrate chitin-binding proteins	T:	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.930.10	Alpha Beta	2-Layer Sandwich	BirA Bifunctional Protein	domain 2	CATH (4.3.0)
A	3.40.50.800	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Anticodon-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF13393	Histidyl-tRNA synthetase (tRNA-synt_His)	Histidyl-tRNA synthetase	This is a family of class II aminoacyl-tRNA synthetase-like and ATP phosphoribosyltransferase regulatory subunits.	Domain
A, B	PF03129	Anticodon binding domain (HGTP_anticodon)	Anticodon binding domain	This domain is found in histidyl, glycyl, threonyl and prolyl tRNA synthetases [1] it is probably the anticodon binding domain [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Histidine--tRNA ligase, cytoplasmic	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide 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 catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA histidine-tRNA ligase activity catalytic activity ligase activity RNA binding nucleic acid binding	amino acid activation tRNA aminoacylation RNA metabolic process primary metabolic process amino acid metabolic process translation gene expression tRNA aminoacylation for protein translation protein biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process biosynthetic process amino acid activation tRNA aminoacylation RNA metabolic process primary metabolic process amino acid metabolic process translation gene expression tRNA aminoacylation for protein translation protein biosynthetic process 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 histidyl-tRNA aminoacylation	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR015807	Histidine-tRNA ligase	Family
A, B	IPR045864	Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)	Homologous Superfamily
A, B	IPR041715	Class II Histidinyl-tRNA synthetase (HisRS)-like catalytic core domain	Domain
A, B	IPR009068	uS15/NS1, RNA-binding domain superfamily	Homologous Superfamily
A, B	IPR004154	Anticodon-binding	Domain
A, B	IPR006195	Aminoacyl-tRNA synthetase, class II	Domain
A, B	IPR004516	Histidine-tRNA ligase/ATP phosphoribosyltransferase regulatory subunit	Family
A, B	IPR036621	Anticodon-binding domain superfamily	Homologous Superfamily
A, B	IPR000738	WHEP-TRS domain	Domain
A, B	IPR033656	Histidyl-anticodon-binding	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P12081	autosomal dominant Charcot-Marie-Tooth disease type 2W Usher syndrome type 3B renal cell carcinoma Charcot-Marie-Tooth disease sarcomatoid renal cell carcinoma autoimmune disease chromophobe renal cell carcinoma papillary renal cell carcinoma Usher syndrome type 3 retinitis pigmentosa collecting duct carcinoma peripheral neuropathy cone-rod dystrophy lung disease myopathy autosomal dominant Charcot-Marie-Tooth disease type 2W Usher syndrome type 3B renal cell carcinoma Charcot-Marie-Tooth disease sarcomatoid renal cell carcinoma autoimmune disease chromophobe renal cell carcinoma papillary renal cell carcinoma Usher syndrome type 3 retinitis pigmentosa collecting duct carcinoma peripheral neuropathy cone-rod dystrophy lung disease myopathy plasma cell myeloma retinal degeneration clear cell renal carcinoma Conventional (Clear Cell) Renal Cell Carcinoma neurodegenerative disease peripheral nervous system disease renal carcinoma diabetes mellitus motor peripheral neuropathy ovarian cancer

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.