Chapter 21 enzymes and vitamins

Chapter 21 enzymes and vitamins - Hormones Substrates and...

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Enzymes and Vitamins
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Enzymes Biological catalysts Usually proteins Names end in “ase” Pocket where reaction occurs is called the “active site” Molecule which reacts is called “substrate” Substrate fits into active site: “induced fit model” pH, temperature, metal ions effect enzyme activity Enzymes can be “inhibited” by molecules that resemble substrate (drugs?) Competitive Noncompetitive Enzyme activity is highly regulated Zymogens
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Unformatted text preview: Hormones Substrates and products (feedback) Many enzymes require other molecules or ions to function: Cofactors or co-enzymes Vitamins Vital amines Small organic molecules obtained from diet Vitamins B and C are water-soluble Act as cofactors for enzymes Vitamins A, D, E, K are fat-soluble Vitamin A: vision Vitamin D: Bone growth Vitamin E: Antioxidant Vitamin K: Clotting...
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This note was uploaded on 01/02/2012 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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Chapter 21 enzymes and vitamins - Hormones Substrates and...

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