Ch_322b_24.01

Ch_322b_24.01 - Chapter 24 Amino Acids and Proteins...

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Chapter 24 Amino Acids and Proteins Biopolymers There are three important classes of biopolymers: polysaccharides proteins nucleic acids Polysaccharides (discussed in Chapter 22) store energy (glycogen), serve as sites for interaction on the surface of the cell (glycolipids and glycoproteins), and provide the structural materials in plants (cellulose). Nucleic acids (Chapter 25) encode the genetic information needed for protein synthesis. Proteins (this chapter) catalyze and regulate chemical reactions at the cellular level, control body movement as muscles and tendons, provide protection to life forms as skin and hair, transport oxygen as hemoglobin, and protect against diseases as antibodies.
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Polyamides Proteins come in a wide variety of shapes and sizes. They all are polymers of !" amino acids . The amino acid units are held together with amide bonds . Proteins are polyamides . CH R H 2 N: CO 2 H an ! -amino acid CH R N C-N O = : H H CH R' C-N O H CH R' C O an amino acid unit
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This note was uploaded on 01/23/2011 for the course CHEM 322BL taught by Professor Singer during the Spring '07 term at USC.

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Ch_322b_24.01 - Chapter 24 Amino Acids and Proteins...

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