1XHE

Crystal structure of the receiver domain of redox response regulator arca

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)	Aerobic respiration control protein arcA	polymer	123	14003.0	2	UniProt (P0A9Q1) Pfam (PF00072)	Escherichia coli	Redox Response Regulator ArcA; Dye resistance protein
2	C, D (A, B)	water	water		18.0	69	Chemie (HOH)

Sequence modifications

A, B: 1 - 123 (UniProt: P0A9Q1)

PDB	External Database	Details
Gln 123	Asn 123	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	28006.0
All*	Total formula weight	28006.0

*Water molecules are not included.