Enzymes
The cleavage specificity of trypsin and chymotrypsin depend in part on the

absence of water in the active site
proximity of Ser 195 to the active site or specificity pocket
presence of a low-barrier hydrogen bond in the active site or specificity pocket
size, shape, and charge of the active site or specificity pocket

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Enzymes
Before they can react, many molecules need to be destabilized. This state is typically achieved through

oxidizing the molecules by removing electrons
changing the three-dimensional shape of the molecule
the input of a small amount of activation energy
changing the reaction from a biosynthetic to a catabolic pathway

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Enzymes
Enzyme-driven metabolic pathways can be made more efficient by

fixing enzymes into membranes so that they are adjacent to each other
All of these
grouping enzymes into free-floating, multienzyme complexes
concentrating enzymes within specific cellular compartments

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