1.2Proteins: The functional molecules of life processesBiological function emerges primarily from proteins.BiochemicalChangeofUnbranchedStarchMoleculesPea ShapeActiveenzymeConversionRoundpeaUnbranchedstarchBranched starchInactiveenzymeXNoconversionUnbranchedstarchUnbranchedstarchWrinkledpeaFig. A in Chapter 21-16
1-16 Copyright © The McGraw-Hill Companies, Inc. Permission required to reproduce or display Fig. A in Chapter 2 1.2 Proteins: The functional molecules of life processes 1.2 Proteins: The functional molecules of life processes Biological function emerges primarily from proteins. Biological function emerges primarily from proteins
Amino acids have a basic amino group (-NH)and an acidiccarboxylgroup(-COOH)Alanine has a relativelyTyrosine has a more complexaromaticside chainsimple CH3 sidechain(a)NH2CHCOOHNH2CH-一COOHCH3CH2AlanineCHCC-HHCC-HCOHTvrosineFig.1.4a1-17
1-17 Copyright © The McGraw-Hill Companies, Inc. Permission required to reproduce or display Fig. 1.4a Alanine has a relatively simple CH3 side chain Tyrosine has a more complex aromatic side chain Amino acids have a basic amino group (-NH 2) and an acidic carboxyl group (-COOH)