6IS2

Crystal Structure of Staphylococcus aureus response regulator ArlR receiver domain in complex with Mg

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Response regulator ArlR	polymer	128	14898.8	4	UniProt (Q2YY03) Pfam (PF00072) In PDB	Staphylococcus aureus (strain bovine RF122 / ET3-1)
2	A, B, C, D	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
3	A	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
4	C	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID	non-polymer		238.3	1	Chemie (EPE)
5	D	IMIDAZOLE	non-polymer		69.1	1	Chemie (IMD)
6		water	water		18.0	516	Chemie (HOH)

Sequence modifications

A, B, C, D: 2 - 121 (UniProt: Q2YY03)

PDB	External Database	Details
Met -6	-	initiating methionine
Gly -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	59595.2
Non-Polymers*	Number of molecules	7
	Total formula weight	500.7
All*	Total formula weight	60095.9

*Water molecules are not included.