User:Karsten Theis/turns
From Proteopedia
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Revision as of 20:41, 7 February 2025
A turn is a secondary structure element consisting of four consecutive amino acids (or three peptide planes). The geometry of turns correspond to a change in the direction of the polypeptide backbone, allowing them to connect alpha helices and beta strands at the surface of a globular protein. Of the six main chain hydrogen bonding partners of a turn, a maximum of two are engaged in hydrogen bonding, and turns are rarely found in the hydrophobic core.
Turns
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