1.3.7.7	evolution	cyanobacteria, algae, bryophytes, pteridophytes and gymnosperms use an additional, light-independent enzyme dubbed dark-operative Pchlide oxidoreductase for chlorophyll biosynthesis, besides a light-dependent enzyme, mechanisms of protochlorophyllide a reduction in photosynthetic organisms, ooverview	726526	
1.3.7.7	evolution	cyanobacteria, algae, bryophytes, pteridophytes and gymnosperms use an additional, light-independent enzyme dubbed dark-operative Pchlide oxidoreductase for chlorophyll biosynthesis, besides a light-dependent enzyme, mechanisms of protochlorophyllide a reduction in photosynthetic organisms, overview	726526	
1.3.7.7	evolution	protein-protein interaction surfaces for transition state complexes of DPOR and nitrogenase, using PDB ID code 1M34, analysis of catalytic differences and similarities between DPOR and nitrogenase, overview	726394	
1.3.7.7	evolution	the enzyme is involved in the biosynthesis of chlorophylls and bacteriochlorophylls in gymnosperm, ferns, algae, and photosynthetic bacteria	725877	
1.3.7.7	malfunction	a strain lacking DPOR contains about 25% of the wild-type level of photosystems PSII and PSI when cultivated under light-activated heterotrophic growth conditions. Deletion of the chlL gene abolishes activity of the DPOR enzyme. Absence of the chlL gene causes a further 20% decrease in Chl content and therefore the resulting (pCER:por)/Dpor/DchlL strain termed SynPORreg reaches only 60-70% of Chl content present in wild-type	726255	
1.3.7.7	metabolism	chlorophyll biosynthesis is catalyzed by two multi subunit enzymes; a light-dependent and a light-independent protochlorophyllide oxidoreductase	725926	
1.3.7.7	metabolism	protochlorophyllide reduction is a key regulatory step in Chl biosynthesis	726104	
1.3.7.7	metabolism	the three-subunit enzyme dubbed DPOR operates in the synthesis of Bchls a, b, and g	726526	
1.3.7.7	metabolism	two independent enzymes catalyze the reduction of protochlorophyllide to chlorophyllide, which is the penultimate step in chlorophyll biosynthesis. One is light-dependent NADPH:protochlorophyllide oxidoreductase and the second type is dark-operative protochlorophyllide oxidoreductase	726255	
1.3.7.7	additional information	dark-grown seedlings of Pinus mugo accumulate chlorophyll and its precursor protochlorophyllide	726104