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Amylopectin

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 α(1→4) bonds. Branching takes place with α(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.

Starch is made of about 70% amylopectin. Amylopectin is highly branched, being formed of 2,000 to 200,000 glucose units. Its inner chains are formed of 20-24 glucose subunits.

Major families of biochemicals
Peptides \| Amino acids \| Nucleic acids \| Carbohydrates \| Lipids \| Terpenes \| Carotenoids \| Tetrapyrroles \| Enzyme cofactors \| Steroids \| Flavonoids \| Alkaloids \| Polyketides \| Glycosides
Analogues of nucleic acids:	Types of Carbohydrates	Analogues of nucleic acids:
General:	Aldose \| Ketose \| Pyranose \| Furanose
Geometry:	Triose \| Tetrose \| Pentose \| Hexose \| Heptose \| Cyclohexane conformation \| Anomer \| Mutarotation
Small/Large:	Glyceraldehyde \| Dihydroxyacetone \| Erythrose \| Threose \| Erythrulose \| Sedoheptulose
Trioses:	ketotriose \| Aldotriose
Tetroses:	Erythrulose \| Erythrose \| Threose
Pentoses:	Arabinose \| Deoxyribose \| Lyxose \| Ribose \| Ribulose \| Xylose \| Xylulose
Hexoses:	Glucose \| Galactose \| Mannose \| Gulose \| Idose \| Talose \| Allose \| Altrose \| Fructose \| Sorbose \| Tagatose \| Psicose \| Fucose \| Rhamnose
Disaccharides:	Sucrose \| Lactose \| Trehalose \| Maltose
Polymers:	Glycogen \| Starch (Amylose \| Amylopectin) \| Cellulose \| Chitin \| Stachyose \| Inulin \| Dextrin
Glycosaminoglycans:	Heparin \| Chondroitin sulfate \| Hyaluronan \| Heparan sulfate \| Dermatan sulfate \| Keratan sulfate
Aminoglycosides:	Kanamycin \| Streptomycin \| Tobramycin \| Neomycin \| Paromomycin \| Apramycin \| Gentamicin \| Netilmicin \| Amikacin

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