Campus Units

Food Science and Human Nutrition

Document Type

Article

Publication Version

Published Version

Publication Date

Fall 2010

Journal or Book Title

Nutrition Close-Up

Volume

27

First Page

4

Last Page

5

Abstract

The amino acid composition of a protein can tell you a lot about it’s health implications. For example a protein source high in sulfur amino acids (methionine and cysteine) can affect methionine metabolism and, ultimately, health. Cysteine is a conditionally essential amino acid, because it can be synthesized endogenously from methionine. Thus, when a dietary protein provides enough methionine beyond the need for cellular protein synthesis, the remaining surplus can be used to synthesize cysteine. Therefore, when a dietary protein has a cysteine concentration in balance with methionine, the need to utilize methionine for its synthesis is reduced. This is often referred to as the methionine-sparing effect of cysteine.

Comments

This article is published as Schalinske, K.L. (Fall 2010) High quality proteins can impact circulating homocysteine levels. Nutrition Close-Up 27: 4-5. Posted with permission.

Copyright Owner

Egg Nutrition Center

Language

en

File Format

application/pdf

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