3VM1

assimilatory nitrite reductase (Nii3) - N226K mutant - HCO3 complex from tobacco leaf

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Nitrite reductase	polymer	584	65586.1	1	UniProt (Q76KB0) Pfam (PF03460) Pfam (PF01077) In PDB	Nicotiana tabacum (tobacco)
2	A	SIROHEME	non-polymer		916.7	1	Chemie (SRM)
3	A	IRON/SULFUR CLUSTER	non-polymer		351.6	1	Chemie (SF4)
4	A	POTASSIUM ION	non-polymer		39.1	1	Chemie (K)
5	A	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
6	A	BICARBONATE ION	non-polymer		61.0	1	Chemie (BCT)
7		water	water		18.0	924	Chemie (HOH)

Sequence modifications

A: -6 - 555 (UniProt: Q76KB0)

PDB	External Database	Details
Met -28	-	expression tag
Gly -27	-	expression tag
His -26	-	expression tag
His -25	-	expression tag
His -24	-	expression tag
His -23	-	expression tag
His -22	-	expression tag
His -21	-	expression tag
His -20	-	expression tag
His -19	-	expression tag
His -18	-	expression tag
His -17	-	expression tag
Ser -16	-	expression tag
Ser -15	-	expression tag
Gly -14	-	expression tag
His -13	-	expression tag
Ile -12	-	expression tag
Glu -11	-	expression tag
Gly -10	-	expression tag
Arg -9	-	expression tag
His -8	-	expression tag
Met -7	-	expression tag
Lys 226	Asn 251	engineered mutation
Arg 290	Lys 315	conflict

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	65586.1
Non-Polymers*	Number of molecules	6
	Total formula weight	1439.3
All*	Total formula weight	67025.4

*Water molecules are not included.