5JEQ

Fragment of nitrate/nitrite sensor histidine kinase NarQ (R50K) in symmetric apo state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Nitrate/nitrite sensor protein NarQ	polymer	236	26784.9	1	UniProt (P27896) Pfam (PF13675) Pfam (PF00672) In PDB	Escherichia coli
2	A	PHOSPHATE ION	non-polymer		95.0	6	Chemie (PO4)
3		water	water		18.0	89	Chemie (HOH)

Sequence modifications

A: 1 - 230 (UniProt: P27896)

PDB	External Database	Details
Lys 50	Arg 50	engineered mutation
His 231	-	expression tag
His 232	-	expression tag
His 233	-	expression tag
His 234	-	expression tag
His 235	-	expression tag
His 236	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	26784.9
Non-Polymers*	Number of molecules	6
	Total formula weight	569.8
All*	Total formula weight	27354.7

*Water molecules are not included.