Annotations: 3IG5

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	GCS	e3ig5A1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: GCS	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.590.50	Alpha Beta	2-Layer Sandwich	Creatine Kinase	Chain A, domain 2	CATH (4.3.0)
A	1.10.150.710	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
A	1.10.8.960	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03074	Glutamate-cysteine ligase (GCS)	Glutamate-cysteine ligase	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Glutamate-cysteine ligase	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 acid-amino acid ligase activity glutamate-cysteine ligase activity catalytic activity ligase activity, forming carbon-nitrogen bonds ligase activity	response to stimulus response to metal ion response to chemical response to cadmium ion glutathione metabolic process modified amino acid biosynthetic process modified amino acid metabolic process amide biosynthetic process sulfur compound biosynthetic process biosynthetic process peptide biosynthetic process glutathione biosynthetic process metabolic process cellular process response to stimulus response to metal ion response to chemical response to cadmium ion glutathione metabolic process modified amino acid biosynthetic process modified amino acid metabolic process amide biosynthetic process sulfur compound biosynthetic process biosynthetic process peptide biosynthetic process glutathione biosynthetic process metabolic process cellular process sulfur compound metabolic process amide metabolic process nonribosomal peptide biosynthetic process peptide metabolic process response to hydrogen peroxide response to oxidative stress response to stress response to oxygen-containing compound response to reactive oxygen species	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR004308	Glutamate-cysteine ligase catalytic subunit	Family
A	IPR014746	Glutamine synthetase/guanido kinase, catalytic domain	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	CSO	Parent Component: CYS RESID: AA0205 PSI-MOD : L-cysteine sulfenic acid MOD:00210

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.