2BU3

Acyl-enzyme intermediate between Alr0975 and glutathione at pH 3.4

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	ALR0975 PROTEIN	polymer	254	29437.2	2	UniProt (Q8YY76) Pfam (PF05023) In PDB	ANABAENA SP. (NOSTOC SP. PCC 7120)	PRIMITIVE PHYTOCHELATIN SYNTHASE
2	A, B	GAMMA-GLUTAMYLCYSTEINE	non-polymer		250.3	2	Chemie (3GC)
3	A, B	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
4	A, B	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
5		water	water		18.0	388	Chemie (HOH)

Sequence modifications

A, B: -10 - 24 (PDB: 2BU3)
A, B: 243 - 243 (PDB: 2BU3)
A, B: 25 - 242 (UniProt: Q8YY76)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	58874.4
Non-Polymers*	Number of molecules	6
	Total formula weight	651.6
All*	Total formula weight	59526.0

*Water molecules are not included.