2FPR

Crystal structure the N-terminal domain of E. coli HisB. Apo Mg model.

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)	Histidine biosynthesis bifunctional protein hisB	polymer	176	20066.7	2	UniProt (Q9S5G5) Pfam (PF13242)	Escherichia coli
2	C, H (A, B)	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	D, I (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	E, F, G, K, L... (A, B)	BROMIDE ION	non-polymer		79.9	7	Chemie (BR)
5	J (B)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
6	O, P (A, B)	water	water		18.0	440	Chemie (HOH)

Sequence modifications

A, B: 3 - 166 (UniProt: Q9S5G5)

PDB	External Database	Details
Met -9	-	cloning artifact
Gly -8	-	cloning artifact
Ser -7	-	cloning artifact
Ser -6	-	cloning artifact
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
Gly 1	-	cloning artifact
Ser 2	-	cloning artifact

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	40133.5
Non-Polymers*	Number of molecules	12
	Total formula weight	761.7
All*	Total formula weight	40895.2

*Water molecules are not included.