alpha helix

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alpha helix

[′al·fə ′hē·liks]
(cell and molecular biology)
A spatial configuration of the polypeptide chains of proteins in which the chain assumes a helical form, 0.54 nanometer in pitch, 3.6 amino acids per turn, presenting the appearance of a hollow cylinder with radiating side groups.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The study of the secondary structure using circular dichroism (CD) (Figure 3) revealed that the peptide PB1 (625) in solution has a structure similar to the described model of beta-hairpin obtained using molecular dynamics methods (8% of alpha-helix, 30% of antiparallel beta-sheet, 25% of beta-turns, and 37% of random coil structure).
The transmembrane segment, an alpha-helix between amino acids nos.
Researchers have never before used an alpha-helix structure to inhibit a protease.
Such a molecular structure is known as an alpha-helix.
Within a few hours, he says, he worked out the answer to the problem: the alpha-helix structure.