2BN4

A second FMN-binding site in yeast NADPH-cytochrome P450 reductase suggests a novel mechanism of electron transfer by diflavin reductase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	NADPH CYTOCHROME P450 REDUCTASE	polymer	682	75843.0	2	UniProt (P16603) Pfam (PF00258) Pfam (PF00667) Pfam (PF00175)	SACCHAROMYCES CEREVISIAE (BAKER'S YEAST)	CPR, P450R
2	C, F (A, B)	FLAVIN-ADENINE DINUCLEOTIDE	non-polymer		785.5	2	Chemie (FAD)
3	D, G (A, B)	FLAVIN MONONUCLEOTIDE	non-polymer		456.3	2	Chemie (FMN) PubChem (710) PubChem (23585816) PubChem (8965) PubChem (51435500) PubChem (51435503) PubChem (643976) PubChem (5702760) PubChem (7048779) PubChem (7048781) PubChem (15559251)
4	E, H (A, B)	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE	non-polymer		743.4	2	Chemie (NAP) PubChem (5885) PubChem (46936685) PubChem (71717786) PubChem (4412) PubChem (90473931) PubChem (91972139) PubChem (145946263) PubChem (153311489) PubChem (174001641) PubChem (165382010)
5	I, J (A, B)	water	water		18.0	55	Chemie (HOH)

Sequence modifications

A, B: 10 - 46 (PDB: 2BN4)
A, B: 47 - 691 (UniProt: P16603)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	151686.1
Non-Polymers*	Number of molecules	6
	Total formula weight	3970.6
All*	Total formula weight	155656.7

*Water molecules are not included.