4D8V

Crystal structure of the hexameric purine nucleoside phosphorylase from Bacillus subtilis at pH 4.2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Purine nucleoside phosphorylase deoD-type	polymer	253	27562.1	2	UniProt (O34925) Pfam (PF01048)	Bacillus subtilis	PNP, Purine nucleoside phosphorylase II, PU-NPase II
2	C, D, F, G (A, B)	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)
3	E, H (A, B)	ADENINE	non-polymer		135.1	2	Chemie (ADE)
4	I, J (A, B)	water	water		18.0	100	Chemie (HOH)

Sequence modifications

A, B: 1 - 233 (UniProt: O34925)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag
Asp 225	Glu 225	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	55124.3
Non-Polymers*	Number of molecules	6
	Total formula weight	654.5
All*	Total formula weight	55778.8

*Water molecules are not included.