1NW1

Crystal Structure of Choline Kinase

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)	Choline kinase (49.2 kD)	polymer	429	49301.0	2	UniProt (Q22942) Pfam (PF01633)	Caenorhabditis elegans
2	C, D (A, B)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	E, F (A, B)	water	water		18.0	342	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	98602.0
Non-Polymers*	Number of molecules	2
	Total formula weight	80.2
All*	Total formula weight	98682.1

*Water molecules are not included.