6THO

Acylintermediate of glutathione and the mature primitive phytochelatin synthase Alr0975 from Nostoc PCC 7120 at atomic resolution.

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d6thoa1	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Phytochelatin synthase	automated matches	(Nostoc sp. PCC 7120 = FACHB-418 ) [TaxId: 103690 ],	SCOPe (2.08)
A	d6thoa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Nostoc sp. PCC 7120 = FACHB-418 ) [TaxId: 103690 ],	SCOPe (2.08)
B	d6thob1	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Phytochelatin synthase	automated matches	(Nostoc sp. PCC 7120 = FACHB-418 ) [TaxId: 103690 ],	SCOPe (2.08)
B	d6thob2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Nostoc sp. PCC 7120 = FACHB-418 ) [TaxId: 103690 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cysteine proteinases	8038611	3001808	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cysteine proteinases	8038611	3001808	SCOP2B (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	PF05023	e6thoA1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: PF05023	ECOD (1.6)
B	PF05023	e6thoB1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: PF05023	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF05023	Phytochelatin synthase (Phytochelatin)	Phytochelatin synthase	Phytochelatin synthase is the enzyme responsible for the synthesis of heavy-metal-binding peptides (phytochelatins) from glutathione and related thiols [2]. The crystal structure of a member of this family shows it to possess a papain fold [3]. The e ...	Phytochelatin synthase is the enzyme responsible for the synthesis of heavy-metal-binding peptides (phytochelatins) from glutathione and related thiols [2]. The crystal structure of a member of this family shows it to possess a papain fold [3]. The enzyme catalyses the deglycination of a GSH donor molecule [3]. The enzyme contains a catalytic triad of cysteine, histidine and aspartate residues.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Alr0975 protein	aminoacyltransferase activity glutathione gamma-glutamylcysteinyltransferase activity acyltransferase activity transferase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	response to stimulus response to metal ion response to chemical response to inorganic substance organonitrogen compound metabolic process organonitrogen compound biosynthetic process phytochelatin biosynthetic process amide biosynthetic process secondary metabolic process organic substance metabolic process biosynthetic process secondary metabolite biosynthetic process organic substance biosynthetic process metabolic process response to stimulus response to metal ion response to chemical response to inorganic substance organonitrogen compound metabolic process organonitrogen compound biosynthetic process phytochelatin biosynthetic process amide biosynthetic process secondary metabolic process organic substance metabolic process biosynthetic process secondary metabolite biosynthetic process organic substance biosynthetic process metabolic process amide metabolic process phytochelatin metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR007719	Phytochelatin synthase, N-terminal catalytic domain	Domain
A, B	IPR038156	Phytochelatin synthase, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
A, B	IPR040409	Phytochelatin synthase	Family

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 R01GM133198.