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Milk Proteins

Biosynthesis of the Milk Proteins

Department of Daily Science, University of Illinois, Urbana

ABSTRACT

Although the breakdown of proteins was among the earliest enzymatic functions recognized and studied, knowledge concerning the enzymatic steps in the synthesis of protein has developed slowly relative to that concerned with the pathways of the metabolism of many other tissue constituents. This is understandable when it is considered that the enzymes mediating cellular processes are proteins. Even if the chemical intermediates and the specific enzymes and cofactors can be identified in the biosynthesis pathway of a biological compound, the questions still remain as to how the enzymes themselves were synthesized and why they happened to be present and at a concentration which the organism required at that particular time. Thus, the results of the action of the protein enzymes are the outward expression of control of the metabolic pathways in the living organism and decry why their specialized cells perform a myriad of different functions. It seems apparent that the mechanism of the synthesis of protein would have to be intimately tied up with, and be dependent on, the over-all mechanism at the core of life itself.

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				A. I. Virtanen Milk Production of Cows on Protein-Free Feed Science, September 30, 1966; 153(3744): 1603 - 1614. [Abstract] [PDF]