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Proteins & Enzymes - Proteins Pg.7785 Protein...

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Proteins Pg. 77-85
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Protein A macromolecule  that consists of one  or more polypeptide  chains folded and  coiled Make up 50% of  cell’s dry weight Only made of 20  amino acid  polymers
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Protein Functions Structural support (collagen) Transport (hemoglobin) Signaling (chemical messengers) Cellular response (receptor proteins) Movement Defense (antibodies) Catalysts (enzymes) **table 5.1 pg.78
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Amino Acids = building block molecule of a protein Structure: -alpha carbon -hydrogen atom -amino group -carboxyl group -variable R group specific to each amino  acid
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Polarity of Amino Acids Nonpolar side groups (less soluble in  water) Polar side groups (soluble in water) Effects where they are in the protein  structure
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Peptide Bond Covalent bond formed by condensation  rxn Links carboxyl group to amino group
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Primary Structure =Unique sequence of amino acids in a  protein Determined by genes Slight changes affect protein’s  conformation
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