Annotations: 2DQ3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e2dq3B1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: DAO, NAD_binding_8	F:	ECOD (20:10:01)
A		e2dq3A1	A: Profilin-like	X: Immunoglobulin-related	H: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	T: NUDIX	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.287.40	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Serine-tRNA synthetase, tRNA binding domain	CATH (4.3.0)
B	3.30.930.10	Alpha Beta	2-Layer Sandwich	BirA Bifunctional Protein	domain 2	CATH (4.3.0)
A	1.10.287.40	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Serine-tRNA synthetase, tRNA binding domain	CATH (4.3.0)
A	3.30.930.10	Alpha Beta	2-Layer Sandwich	BirA Bifunctional Protein	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00587	tRNA synthetase class II core domain (G, H, P, S and T) (tRNA-synt_2b)	tRNA synthetase class II core domain (G, H, P, S and T)	tRNA-synt_2b is a family of largely threonyl-tRNA members.	Domain
A, B	PF02403	Seryl-tRNA synthetase N-terminal domain (Seryl_tRNA_N)	Seryl-tRNA synthetase N-terminal domain	This domain is found associated with the Pfam tRNA synthetase class II domain (Pfam:PF00587) and represents the N-terminal domain of seryl-tRNA synthetase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Seryl-tRNA synthetase	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 ligase activity, forming carbon-oxygen bonds aminoacyl-tRNA ligase activity catalytic activity, acting on RNA serine-tRNA ligase activity catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA catalytic activity ligase activity	oxoacid metabolic process modified amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process small molecule biosynthetic process carboxylic acid metabolic process modified amino acid metabolic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process oxoacid metabolic process modified amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process small molecule biosynthetic process carboxylic acid metabolic process modified amino acid metabolic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process selenocysteine metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process biosynthetic process proteinogenic amino acid biosynthetic process metabolic process cellular process L-selenocysteine biosynthetic process alpha-amino acid biosynthetic process amino acid activation tRNA aminoacylation RNA 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 seryl-tRNA aminoacylation macromolecule metabolic process protein metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR045864	Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)	Homologous Superfamily
A, B	IPR042103	Serine-tRNA synthetase, type1, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR002317	Serine-tRNA ligase, type1	Family
A, B	IPR015866	Serine-tRNA synthetase, type1, N-terminal	Domain
A, B	IPR006195	Aminoacyl-tRNA synthetase, class II	Domain
A, B	IPR002314	Aminoacyl-tRNA synthetase, class II (G/ P/ S/T)	Domain
A, B	IPR010978	Class I and II aminoacyl-tRNA synthetase, tRNA-binding arm	Homologous Superfamily
A, B	IPR033729	Serine-tRNA ligase catalytic core domain	Domain

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.