1F9Q

CRYSTAL STRUCTURE OF PLATELET FACTOR 4

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	PLATELET FACTOR 4	polymer	70	7782.2	4	UniProt (P02776) Pfam (PF00048) In PDB	Homo sapiens (human)
2		water	water		18.0	226	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	31128.8
All*	Total formula weight	31128.8

*Water molecules are not included.