Abstract
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.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Aminolevulinic Acid / metabolism
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Chlorophyll / biosynthesis*
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Darkness
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Light
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Light-Harvesting Protein Complexes
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Photosynthetic Reaction Center Complex Proteins
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Phycobilins
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Phycocyanin / biosynthesis*
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Pigments, Biological / biosynthesis*
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Plant Proteins / biosynthesis*
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Porphyrins / pharmacology*
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Protoporphyrins / pharmacology*
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Pyrroles / biosynthesis*
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Rhodophyta / drug effects
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Rhodophyta / metabolism*
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Tetrapyrroles
Substances
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Light-Harvesting Protein Complexes
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Photosynthetic Reaction Center Complex Proteins
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Phycobilins
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Pigments, Biological
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Plant Proteins
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Porphyrins
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Protoporphyrins
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Pyrroles
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Tetrapyrroles
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Phycocyanin
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Chlorophyll
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phycocyanobilin
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N-methylprotoporphyrin IX
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Aminolevulinic Acid