4EUK

Crystal structure

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Histidine kinase 5	polymer	153	16928.4	1	UniProt (Q3S4A7) Pfam (PF00072) In PDB	Arabidopsis thaliana (mouse-ear cress thale-cress)	Arabidopsis histidine kinase 5, AtHK5, Protein AUTHENTIC HIS-KINASE 5, Protein CYTOKININ-INDEPENDENT 2
2	B	Histidine-containing phosphotransfer protein 1	polymer	159	18044.5	1	UniProt (Q9ZNV9) Pfam (PF01627) In PDB	Arabidopsis thaliana (mouse-ear cress thale-cress)
3	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
4	B	1,2-ETHANEDIOL	non-polymer		62.1	1	Chemie (EDO)
5		water	water		18.0	182	Chemie (HOH)

Sequence modifications

A: 774 - 922 (UniProt: Q3S4A7)

PDB	External Database	Details
Gly 770	-	expression tag
Ser 771	-	expression tag
His 772	-	expression tag
Met 773	-	expression tag

B: 1 - 154 (UniProt: Q9ZNV9)

PDB	External Database	Details
Gly -4	-	expression tag
Pro -3	-	expression tag
Leu -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	34972.9
Non-Polymers*	Number of molecules	2
	Total formula weight	86.4
All*	Total formula weight	35059.3

*Water molecules are not included.