1B9M

REGULATOR FROM ESCHERICHIA COLI

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	PROTEIN (MODE)	polymer	265	28731.1	2	UniProt (P0A9G8) Pfam (PF03459) In PDB	Escherichia coli
2	A	NICKEL (II) ION	non-polymer		58.7	1	Chemie (NI)
3		water	water		18.0	426	Chemie (HOH)

Sequence modifications

A, B: 1 - 262 (UniProt: P0A9G8)

PDB	External Database	Details
Gly -3	-	SEE REMARK 999
Ser -2	-	SEE REMARK 999
His -1	-	SEE REMARK 999
Mse 1	Met 1	modified residue
Mse 55	Met 55	modified residue
Mse 221	Met 221	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	57462.2
Non-Polymers*	Number of molecules	1
	Total formula weight	58.7
All*	Total formula weight	57520.9

*Water molecules are not included.