Starch formation

Stable Identifier
R-OSA-9918213
Type
Reaction
Species
Oryza sativa
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Summation

Starch granules are made of amylose (linear a-1,4-polyglucans) and amylopectin (a-1,6-branched polyglucans). Amylose contains up to several thousand ?-glucosyl units linked almost exclusively in ?(1->4) linkage with very few branches of ?(1->6) linkage. Amylose accounts for 30% of starch in rice grain. Amylopectin is a branched molecule and contains up to several million glucosyl residues. Amylopectin accounts for 70% of starch in rice grain.

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