Annotations: 2BU3

Acyl-enzyme intermediate between Alr0975 and glutathione at pH 3.4

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
B	d2bu3b_	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Phytochelatin synthase	Primitive phytochelatin synthase	NOSTOC SP. PCC 7120 (Anabaena sp. ) [TaxId: 1167 ],	SCOPe (2.08)
A	d2bu3a_	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Phytochelatin synthase	Primitive phytochelatin synthase	NOSTOC SP. PCC 7120 (Anabaena sp. ) [TaxId: 1167 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Cysteine proteinases	8038611	3001808	SCOP2B (2022-06-29)
A	SCOP2 Family	Phytochelatin synthase	8026232	4003352	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cysteine proteinases	8038611	3001808	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)
B	Phage_lysozyme	e2bu3B1	A: beta barrels	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: Phage_lysozyme	ECOD (v294.2)
A	Phytochelatin	e2bu3A1	A: few secondary structure elements	X: Cysteine proteinases-like	H: Cysteine proteinases	T: Cysteine proteinases	F: Phytochelatin	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.90.70.30	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)
A	3.90.70.30	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)

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 biosynthetic process phytochelatin biosynthetic process primary metabolic process metabolic process cellular 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

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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.