How to tell which of the following peptide segments

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How to tell which of the following peptide segments is most likely to be part of a stable ? helix at physiological pH?

1.-Gly-Gly-Gly-Ala-Gly-
2.-Tyr-Trp-Phe-Val-Ile-
3.-Glu-Leu-Ala-Lys-Phe-
4.-Gly-Arg-Lys-His-Gly-
5.-Lys-Lys-Ala-Arg-Ser-
6.-Glu-Glu-Glu-Glu-Glu-
7.-Pro-Leu-Thr-Pro-Trp-

Reference no: EM13117768

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