1HXD

CRYSTAL STRUCTURE OF E. COLI BIOTIN REPRESSOR WITH BOUND BIOTIN

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	BIRA BIFUNCTIONAL PROTEIN	polymer	321	35351.9	2	UniProt (P06709) Pfam (PF08279) Pfam (PF03099) Pfam (PF02237) In PDB	Escherichia coli	BIOTIN REPRESSOR
2	A, B	BIOTIN	non-polymer		244.3	2	Chemie (BTN)
3		water	water		18.0	59	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	70703.8
Non-Polymers*	Number of molecules	2
	Total formula weight	488.6
All*	Total formula weight	71192.5

*Water molecules are not included.