6J6K

Apo-state streptavidin

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	Streptavidin	polymer	119	12596.6	4	UniProt (P22629) Pfam (PF01382) In PDB	Streptomyces avidinii

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	50386.6
All*	Total formula weight	50386.6

*Water molecules are not included.