1ZJ8

Structure of Mycobacterium tuberculosis NirA protein

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)	Probable ferredoxin-dependent nitrite reductase NirA	polymer	566	63485.8	2	UniProt (P71753) Pfam (PF03460) Pfam (PF01077) UniProt (by SIFTS) (P9WJ03)	Mycobacterium tuberculosis	sulfite reductase NirA
2	C, F (A, B)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
3	D, G (A, B)	IRON/SULFUR CLUSTER	non-polymer		351.6	2	Chemie (SF4)
4	E, H (A, B)	SIROHEME	non-polymer		916.7	2	Chemie (SRM)
5	I, J (A, B)	water	water		18.0	22	Chemie (HOH)

Sequence modifications

A, B: 3 - 555 (UniProt: P71753)

PDB	External Database	Details
Met -10	-	expression tag
Asp -9	-	expression tag
Val -8	-	expression tag
Ser -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
Gly 0	-	expression tag
Met 1	-	expression tag
Ala 2	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	126971.7
Non-Polymers*	Number of molecules	6
	Total formula weight	2607.5
All*	Total formula weight	129579.2

*Water molecules are not included.