Biology notes 29 Sept 2008

Biology notes 29 Sept 2008 - September 29, 2008 Enzymes How...

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September 29, 2008 Enzymes some spontaneous reactions can take 1.1 billion years enzymes ONLY make a reaction go faster; can’t supply energy or make an endergonic reaction go spontaneously transition state – particles have acquired energy from surroundings (activation energy) and are now at enough of a high energy state to react EA represents a barrier e.g. propane is thermodynamically unstable but is kinetically very stable b/ c it has a huge activation energy that must be overcome rate of reaction is proportional to the number of activated molecules enzymes lowers the activation energy of a reaction enzymes are required because the allow reactions to proceed at temperature that are conducive to life folding of protein (tertiary and quaternary structure) is fundamentally important to the function of an enzymes site of catalysis (where the reaction actually takes place) is the active site of the enzyme active site – small, 3d cleft/crevice, precise (e.g. L-alanine can get in but
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Biology notes 29 Sept 2008 - September 29, 2008 Enzymes How...

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