alpha helix

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Related to Alpha-helix: Beta-sheet

alpha helix

n.
A secondary structure of proteins, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds.

[From alpha-form, the form taken by unstretched protein molecules.]

al′pha-hel′i·cal (-hĕl′ĭ-kəl, -hē′lĭ-) adj.

alpha helix

n
(Biochemistry) biochem a helical conformation of a polypeptide chain, found abundantly in the structure of proteins

al′pha he′lix


n.
the spatial configuration of many protein molecules in which the polypeptide backbone is stabilized by hydrogen bonds between amino acids in successive helical turns.
[1950–55]
Translations
alfa uzvojnica
References in periodicals archive ?
All these proteins achieve voltage sensing through the action of a 4 alpha-helix bundle module called the voltage-sensor domain (VSD).
Alpha-helix rods and folded beta-sheet constructions were clearly visible within the 20 subunits of the APC/C, defining the overall architecture of the complex.
The transmembrane segment, an alpha-helix between amino acids nos.