Enzyme

Oxygen

Light

Types

Encoded

Cofactor

Present in

COR

(EC .3.99.35)

Sensitive

Independent

BchX, BchY and BchZ

Chloroplast

ATP; NADPH; [Fe-S]

NS bacterium

DVR

(EC 1.3.1.75)

Sensitive

Independent

BciA and BciB

Chloroplast (etioplast)

[4Fe-S]; FAD; NADPH

All Phototrophs

DPOR

(EC 1.3.7.7)

Sensitive

Independent

(subunits): BchB/ChlB, BchL/ChlL and BchN/ChlN

Chloroplast

ATP; NADPH;

[Fe-S]

Anoxigenic bacteria, Photos. bacteria, cyanobacteria, plants (except angiosperms

LPOR

(EC 1.3.1.33)

Insensitive

Dependent

(isoforms):porA, porB and porC

Nucleus

NADPH

cyanobacteria and plants