1FWK

CRYSTAL STRUCTURE OF HOMOSERINE KINASE COMPLEXED WITH ADP

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 (A, B, C, D)	HOMOSERINE KINASE	polymer	296	32299.4	4	UniProt (Q58504) Pfam (PF00288) Pfam (PF08544)	Methanocaldococcus jannaschii	HK
2	E, F, G, I (A, B, C, D)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	4	Chemie (ADP)
3	H (D)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
4	J, K, L, M (A, B, C, D)	water	water		18.0	596	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	129197.5
Non-Polymers*	Number of molecules	5
	Total formula weight	1733.1
All*	Total formula weight	130930.6

*Water molecules are not included.