EASC-101 Lecture Notes - Lecture 6: Essential Amino Acid, Complete Protein
25 Mar 2016
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Document Summary
An essential amino acid that is present in dietary protein in an insufficient amount: thereby limiting the body"s ability to build protein. Lack of availability will slow protein synthesis: when the limiting amino acid again becomes abundant cells resume their normal protein- related activities. Partially completed proteins are not held for completion at a later time. They are dismantled & the component amino acids are returned to circulation to be made available to other cells. If not soon used for protein synthesis, they are stripped of their amine groups & the residue is used for other purposes. Mutual supplementation and complementary proteins: complete proteins - contain all aa needed. Incomplete proteins - deficient in some aa: mutual supplementation - complementation between foods to give a complete protein level of aa, complementary proteins. 2 or more proteins whose amino acid assortments complement each other in such a way that the essential amino acids missing from one are supplied by the other.
