The Control of CTP: Cholinephosphate Cytidylyltransferase in Pea Stems
Phosphatidylcholine is the major phospholipid of the non-photosynthetic membranes of higher plants1, and its main route of synthesis is via the CDP-base pathway2. Studies with the plant growth-promoting compound, indol-3-y1 acetic acid (IAA), using the third internode region of pea (Pisum sativum L.) stems, have shown that in the presence of IAA the incorporation of [Me-14 C]choline into phosphatidylcholine was reduced within one hour of treatment3. This was shown to be due to a change in the activity of cytidylyltransferase.
KeywordsSoluble Activity Uncompetitive Inhibitor High Molecular Weight Form Exogenous Lipid Phosphatidylcholine Synthesis
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