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  1. For each polypeptide sequence listed, choose from the options given below to indicate which

secondary structure the sequence is most likely to form upon folding. The nonpolar amino acids

are italicized. Explain your choice(s).

ALeu-Gly-Val-Leu-Ser-Leu-Phe-Ser-Gly-Leu-Met-Trp-Phe-Phe-Trp-Ile
BLeu-Leu-Gln-Ser-Ile-Ala-Ser-Val-Leu-Gln-Ser-Leu-Leu-Cys-Ala-Ile
CThr-Leu-Asn-Ile-Ser-Phe-Gln-Met-Glu-Leu-Asp-Val-Ser-Ile-Arg-Trp

amphipathic α helix hydrophilic α helix

hydrophobic α helix amphipathic β sheet

hydrophilic β sheet