Identification of a sequence motif of the rice Pho1 L80 that potentially modulates grain starch metabolism and floral timing
The rice plastidial phosphorylase (Pho1) is essential for optimal starch synthesis and plays an additional role in modifying photosystem I (PSI) activity via its interaction with PsaC. Pho1 contains an intrinsically disordered region, L80, which acts as a negative modulator of plant growth and development as well as starch biosynthesis and PSI activity. The exact mechanism by which Pho1 lacking…
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