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Metabolic Engineering of Carbohydrates - (CUSAT) – Plant ...

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Starch biosynthesis<br />

• occur in the plastids <strong>of</strong> leaves & in amyloplasts<br />

<strong>of</strong> storage organs<br />

• Upon entry <strong>of</strong> sucrose in the sink cells , sucrose<br />

is cleaved by sucrose synthase & converted to<br />

Glu-1-P which can be used for the synthesis <strong>of</strong><br />

ADP-glucose, the major substrate for starch<br />

biosynthesis<br />

• reaction is catalysed by ADP –glucosepyrophosphorylase

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