alpha helix

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alpha helix

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

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

al′pha he′lix

the spatial configuration of many protein molecules in which the polypeptide backbone is stabilized by hydrogen bonds between amino acids in successive helical turns.
alfa uzvojnica
References in periodicals archive ?
Real-time effects of the breakage of a helix on the structure of apoMb are intended to be observed in the in-house probe on NMR.
These include two operations in California; MedVenture Technology in Indiana; and VistaMed, a Helix Medical joint-venture partner in Ireland.
Chakrabarti, "[3.sub.10]-Helix adjoining a helix and [beta]-strand: sequence and structural features and their conservation," Biopolymers, vol.
You can also choose to stream to your own proprietary network, a Helix Media Server or via Helix Cloud (where bandwidth allows).
Lu, "Thermal analysis of a helix TWT slow-wave structure," IEEE Trans.
Excitation of a helix as a passive element can be realized by an external electromagnetic wave for different directions of wave propagation, but here we emphasize a non-axial incidence which leads to some promising results of practical realization.
Because numerical simulation can get detailed three dimensional temperature distributions of a helix SWS, this method is employed in this paper to accurately calculate the thermal characteristics of the helix SWS.