Classify each phrase as a description of alpha helices. beta sheets. beta turns. or all.

Classify each phrase as a description of alpha helices, beta sheets, beta turns, or all. a Helices B Sheets B Turns All Answer Bank successive R groups point in opposite directions all - NH groups point in the same direction contains - NH hydrogen-bonded to C=0 first residue hydrogen-bonded to fifth residue that is, residue n is H-bonded to residue n+4) first residue hydrogen-bonded to fourth residue (that is, residue n is H-bonded to residue n+3) Classify each phrase as a description of alpha helices, beta sheets, beta turns, or all. a Helices B Sheets B Turns All Answer Bank successive R groups point in opposite directions all – NH groups point in the same direction contains – NH hydrogen-bonded to C=0 first residue hydrogen-bonded to fifth residue that is, residue n is H-bonded to residue n+4) first residue hydrogen-bonded to fourth residue (that is, residue n is H-bonded to residue n+3)

Alpha helices beta sheet beta turns All
First residue hydrogen bonded to 5th residue ( that is, residue
n is h bonded to residue, n+4)All NH groups point same direction

(The stable arrangement of alpha helices is possible due to the
Hydrogen bond present after 4 residues away in an alpha
helices.)

successive R groups point in the opposite directions(This gives them a zig zag structure) first residue H bonded to the 4th residue( residue n is H bonded
to residue n+3)(The main chain here has hydrogen bond between amino group and
carbonyl group after 3 residues)
contains -NH hydrogen bonded to C=O

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