5IUJ

Crystal structure of the DesK-DesR complex in the phosphotransfer state with low Mg2+ (20 mM)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, D, E	Sensor histidine kinase DesK	polymer	218	24956.6	4	UniProt (O34757) Pfam (PF07730) Pfam (PF02518) In PDB	Bacillus subtilis
2	C, F	Transcriptional regulatory protein DesR	polymer	139	15108.4	2	UniProt (O34723) Pfam (PF00072) In PDB	Bacillus subtilis (strain 168)
3	A, B, D, E	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER	non-polymer		505.2	4	Chemie (ACP)
4	A, B, D, E	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
5	C, F	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
6		water	water		18.0	15	Chemie (HOH)

Sequence modifications

A, B, D, E: 154 - 370 (UniProt: O34757)

PDB	External Database	Details
Gly 153	-	expression tag
Glu 188	His 188	engineered mutation

C, F: 1 - 135 (UniProt: O34723)

PDB	External Database	Details
Gly -3	-	expression tag
Ser -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	130043.1
Non-Polymers*	Number of molecules	10
	Total formula weight	2196.2
All*	Total formula weight	132239.3

*Water molecules are not included.