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The Nucleus-Encoded trans-Acting Factor MCA1 Plays a Critical Role in the Regulation of Cytochrome f Synthesis in Chlamydomonas Chloroplasts[W]

By Alix Boulouis, Cécile Raynaud, Sandrine Bujaldon, Aude Aznar, Francis-André Wollman and Yves Choquet


This work shows that MCA1, required for the expression of cytochrome f, is degraded by proteolysis upon interaction with unassembled cytochrome f. MCA1 proteolysis appears to be critical for the assembly-dependent regulation of cytochrome f synthesis, known as Control by Epistasy of Synthesis, which tightly couples its expression to that of its assembly partners

Topics: Research Articles
Publisher: American Society of Plant Biologists
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Provided by: PubMed Central
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