1FWL

CRYSTAL STRUCTURE OF HOMOSERINE 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, C, D	HOMOSERINE KINASE	polymer	296	32299.4	4	UniProt (Q58504) Pfam (PF00288) Pfam (PF08544) In PDB	Methanocaldococcus jannaschii	HK
2		water	water		18.0	506	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	129197.5
All*	Total formula weight	129197.5

*Water molecules are not included.