Amylopectin (
CAS_ 9037-22-3) is a highly branched
polymer of
glucose found in plants. It is one of the two components of
starch, the other being
amylose. It is soluble in water.
Glucose units are linked in a linear way with a(1?4) bonds. Branching takes place with a(1?6) bonds occurring every 24 to 30 glucose units.
Its counterpart in animals is glycogen which has the same composition and structure, but with more extensive branching that occurs every 8 to 12 glucose units.
Plants store starch within specialized organelles called amyloplasts. When energy is needed for cell work, the plant hydrolyzes the starch releasing the glucose subunits. Humans and other animals that eat plant foods also have enzymes to hydrolyze starch.
