Identification of a nifDK-like gene (ORF467) involved in the biosynthesis of chlorophyll in the cyanobacterium Plectonema boryanum.


The frxC gene, which is found in chloroplast DNA (ctDNA) and in cyanobacteria, encodes a protein that is required for the light-independent reduction of protochlorophyllide (Pchlide) to chlorophyllide a (Chlide). A DNA fragment downstream of frxC in the filamentous cyanobacterium Plectonema boryanum was cloned and analyzed. Sequencing of the DNA fragment… (More)