Proteolysis - Protein Degradation

Protein Degradation

Proteolytic cleavage breaks down proteins in food extracellularly into smaller peptides and amino acids so that they may be absorbed and used by an organism. Proteins in cells are also constantly being broken down into amino acids. This intracellular degradation of protein serves a number of functions - it removes damaged and abnormal protein and prevent their accumulation, and it also serves to regulate cellular processes by removing enzymes and regulatory proteins that are no longer needed. The amino acids may then be reused for protein synthesis.

Read more about this topic:  Proteolysis

Famous quotes containing the words protein and/or degradation:

    “Firm-style bean curd insoles cushion feet, absorb perspiration and provide more protein than meat or fish innersoles of twice the weight. Tofu compresses with use, becoming more pungent and flavorful. May be removed when not in use to dry or marinate. Innersoles are ready to eat after 1,200 miles of wear. Each pair provides adult protein requirement for 2 meals. Insoles are sized large to allow for snacks. Recipe booklet included.”
    —Alfred Gingold, U.S. humorist. Items From Our Catalogue, “Tofu Innersoles,” Avon Books (1982)

    “It was the most ungrateful and unjust act ever perpetrated by a republic upon a class of citizens who had worked and sacrificed and suffered as did the women of this nation in the struggle of the Civil War only to be rewarded at its close by such unspeakable degradation as to be reduced to the plane of subjects to enfranchised slaves.”
    —Anna Howard Shaw (1847–1919)