Name the amino acids in Table 11E.3 that contain nonpolar side groups. These groups contribute to the tertiary structure of a protein by preventing contact with water.

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TABLE 11E.3 The Naturally Occurring Amino Acids, R-CH(NH)COOH R -H -CH3 CH -CH(CH3)2 -CHCH(CH3)2 -CH(CH3)CHCH3 -CHOH -CH(OH)CH CH, -CHCOOH -CHCHCOOH -CHSH -CHCHSCH3 CH,(CH,),NH, OH *Essential amino acids for humans. Name glycine alanine phenylalanine* valine* leucine* isoleucine* serine threonine* tyrosine aspartic acid glutamic acid cysteine methionine* lysine* Abbreviation Gly Ala Phe Val Leu Ile Ser Thr Tyr Asp Glu Cys Met Lys R CH,(CH,),NH -CH N -CH N H NH CH,CONH, CH,CH,CONH, NH CH NH, NH Name arginine histidine* tryptophan* asparagine glutamine proline Abbreviation Arg His Trp Asn Gln Pro