Degradation deliberate synthesis

Genetic factors influence the rate of not only synthesis of proteins but also their breakdown, i.e., the rate of turnover. As we have seen in Chapter 10, some enzymes are synthesized as inactive proenzymes which are later modified to active forms, and active enzymes are destroyed, both by accident and via deliberate hydrolytic pathways. Protein antienzymes may not only inhibit enzymes but may promote their breakdown.35 An example is the antienzyme that controls ornithine decarboxylase, a key enzyme in the synthesis of the polyamines that are essential to growth.36,37 As with all cell constituents, the synthesis of enzymes and other proteins is balanced by degradation. 

Suspension polymerization, 94-95 Sustainable development, 199 Sustained-release drugs, 187 Syndiotactic polymers, 104, 261 Synthesis of polymers, 5, 34, 83-115. See also Polymerization biopolymers, 27-28, 43 deliberate, to promote degradation, 183 dendrimers, 110-113, 112-113 solid-phase, 32 Synthetic polymers, 5-7, 8 abiotic degradation of, 182 advantages of, 7-8 categories of, 6-7, 7 cost of, 8 density of, 7-8 first, 56-57... 

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