Annotations: 1GSA

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1gsaa1	Alpha and beta proteins (a/b)	PreATP-grasp domain	PreATP-grasp domain	Prokaryotic glutathione synthetase, N-terminal domain	Prokaryotic glutathione synthetase, N-terminal domain	(Escherichia coli B ) [TaxId: 37762 ],	SCOPe (2.08)
A	d1gsaa2	Alpha and beta proteins (a+b)	ATP-grasp	Glutathione synthetase ATP-binding domain-like	ATP-binding domain of peptide synthetases	Prokaryotic glutathione synthetase, C-domain	(Escherichia coli B ) [TaxId: 37762 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	ATP-binding domain of peptide synthetases	8024134	4002041	SCOP2 (2022-06-29)
A	SCOP2 Family	Prokaryotic glutathione synthetase, N-terminal domain	8031857	4003876	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Glutathione synthetase ATP-binding domain-like	8036513	3000094	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PreATP-grasp domain	8044235	3001680	SCOP2 (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	RimK	e1gsaA1	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: ATP-grasp	F: RimK	ECOD (1.6)
A	GSH-S_N	e1gsaA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: PreATP-grasp domain	F: GSH-S_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.20	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.30.470.20	Alpha Beta	2-Layer Sandwich	D-amino Acid Aminotransferase	Chain A, domain 1	CATH (4.3.0)
A	3.30.1490.20	Alpha Beta	2-Layer Sandwich	Dna Ligase	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02955	Prokaryotic glutathione synthetase, ATP-grasp domain (GSH-S_ATP)	Prokaryotic glutathione synthetase, ATP-grasp domain		Domain
A	PF02951	Prokaryotic glutathione synthetase, N-terminal domain (GSH-S_N)	Prokaryotic glutathione synthetase, N-terminal domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	GLUTATHIONE SYNTHETASE	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding anion binding adenyl nucleotide binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding acid-amino acid ligase activity glutathione synthase activity non-ribosomal peptide synthetase activity catalytic activity ligase activity, forming carbon-nitrogen bonds ligase activity identical protein binding protein binding	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 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 protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011761	ATP-grasp fold	Domain
A	IPR013815	ATP-grasp fold, subdomain 1	Homologous Superfamily
A	IPR006284	Glutathione synthetase, prokaryotic	Family
A	IPR016185	Pre-ATP-grasp domain superfamily	Homologous Superfamily
A	IPR004218	Prokaryotic glutathione synthetase, ATP-binding	Domain
A	IPR004215	Prokaryotic glutathione synthetase, N-terminal	Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	glutathione synthase (prokaryotic) M-CSA #199	Glutathione synthetase catalyses the ligation of glycine to gamma-L-glutamyl-L-cysteine (gamma-Glu-Cys) with concomitant hydrolysis of ATP. This is the second and final step in the synthesis of glutathione. Glutathione has many important functions in the cell, including protection against oxidative damage, detoxification of harmful substances, and as a coenzyme for several reactions. Glutathione synthetase is present in species ranging from bacteria to mammals. This entry represents the glutathione synthetases found in Gram-negative bacteria. This gene does not appear to be present in genomes of Gram-positive bacteria.	Defined by 8 residues: LYS:A-125LYS:A-160ARG:A-210ARG:A-225ARG:A-233ASP:A-273GLU:A-281ASN:A-283 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 6.3.2.3 (PDB Primary Data) Search M-CSA Motif + EC 6.3.2.3

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.