BIOC12H3 Lecture Notes - Lecture 5: Alcohol Dehydrogenase, Bond Length, Hsp70

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Lecture 5 protein structure => the details. The protein folds domain-by-domain instead of all at once to preserve its final tertiary structure. These three categories all fall under tertiary structure, but have been sub- divided into the. Semester: summer 2020: becomes important in understanding how protein folding actually takes place. Peptide group (groups that surround the peptide bond, between the c-n: carbonyl oxygen atom, amide hydrogen atom, two adjacent -carbon. Planar peptide groups (2) in a polypeptide chain. Electron delocalization and the partial double-bond character of the peptide bond prevent free rotation around the c-n bond. Conformation of the peptide bond cis/trans orientation: due to the double-bond nature of the peptide bond, conformation of the peptide group is restricted to one of two possible conformations. Arrows indicate direction of the polypeptide, from the n (top) to the. Almost all amino acids retain the trans conformer in polypeptide chains to reduce the steric strain between adjacent side chains.

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