1VWA

STREPTAVIDIN-FSHPQNT

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (B, D)	STREPTAVIDIN	polymer	123	12965.0	2	UniProt (P22629) Pfam (PF01382)	Streptomyces avidinii
2	C, D (M, P)	PEPTIDE LIGAND CONTAINING HPQ	polymer	7	830.9	2
3	E, F, G, H (B, D, M, P)	water	water		18.0	179	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	27591.8
All*	Total formula weight	27591.8

*Water molecules are not included.