The effect of N-methylprotoporphyrin IX on the synthesis of photosynthetic pigments in Cyanidium caldarium. Further evidence for the role of haem in the biosynthesis of plant billins.
N-Methylprotoporphyrin IX strongly inhibits synthesis of phycocyanobilin, but not chlorophyll a, in the dark. In the light, both phycocyanin and chlorophyll a synthesis are inhibited in parallel. These results are consistent with the intermediacy of haem in algal bilin synthesis and suggest a control mechanism for chlorophyll a synthesis, previously unknown.
D000622:Aminolevulinic Acid / Q000378:metabolism; D002734:Chlorophyll / Q000096:biosynthesis*; D003624:Darkness; D008027:Light; D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D052980:Phycobilins; D010798:Phycocyanin / Q000096:biosynthesis*; D010860:Pigments, Biological / Q000096:biosynthesis*; D010940:Plant Proteins / Q000096:biosynthesis*; D011166:Porphyrins / Q000494:pharmacology*; D011524:Protoporphyrins / Q000494:pharmacology*; D011758:Pyrroles / Q000096:biosynthesis*; D000461:Rhodophyta / Q000187:drug effects / Q000378:metabolism*; D045725:Tetrapyrroles
D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D052980:Phycobilins; D010860:Pigments, Biological; D010940:Plant Proteins; D011166:Porphyrins; D011524:Protoporphyrins; D011758:Pyrroles; D045725:Tetrapyrroles; D010798:Phycocyanin; D002734:Chlorophyll; C011069:phycocyanobilin; C028842:N-methylprotoporphyrin IX; D000622:Aminolevulinic Acid