Branched-chain

From WikiMD's Wellness Encyclopedia

Branched-chain amino acids (BCAAs) are amino acids with side chains that are non-linear. They include leucine, isoleucine, and valine. BCAAs are among the nine essential amino acids for humans, accounting for 35% of the essential amino acids in muscle proteins and 40% of the preformed amino acids required by mammals.

Structure[edit | edit source]

BCAAs have aliphatic side-chains with a branch (a central carbon atom bound to three or more carbon atoms). Among the proteinogenic amino acids, there are three BCAAs: leucine, isoleucine, and valine.

Function[edit | edit source]

BCAAs are used in medicine for a number of purposes. They are used to treat liver disease, improve athletic performance, and prevent muscle wasting in people confined to bed.

Dietary sources[edit | edit source]

BCAAs are found in foods and whole protein supplements. Good sources include meat, dairy products, legumes, and protein supplements.

See also[edit | edit source]

Branched-chain Resources
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Contributors: Prab R. Tumpati, MD