Chemistry 101L - Kentucky Department of Education

2) This allows for hydrogen bonding between the C=O of one amino acid and the N—H of another. 3) Hydrogen bonding between every fourth amino acid holds the spiral shape of an ( helix. b. The ( (beta) sheet was the second pattern discovered. 1) Pleated ( sheet polypeptides turn back upon themselves. 2) Hydrogen bonding occurs between extended ... ................
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