helix

(redirected from a-helix)
Also found in: Dictionary, Medical, Encyclopedia.
Related to a-helix: alpha helix
Graphic Thesaurus  🔍
Display ON
Animation ON
Legend
Synonym
Antonym
Related
  • noun

Synonyms for helix

Synonyms for helix

a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle

a structure consisting of something wound in a continuous series of loops

References in periodicals archive ?
It suggested that heat induced a self-reassembly from [beta]-sheet to a-helix and [beta]-turn structure, as [beta]-sheet structure was always found in the interior of the folded molecule, and partly loss of [beta]-sheet structure indicated exposure of hydrophobic sites of the protein that may cause an increase in surface hydrophobicity.
Although the changes of BSA secondary structure caused by DIO in the presence of [Co.sup.2+] or [Zn.sup.2+] were different from those without metal ions, they all major led to the decrease of a-helix conformation.
First, the side chain R group is distributed in the outside of the main chain of a-helix structure, but the continuous large R groups can make a-helix structure unstable, thereby disabling amino acids from forming a-helix structure.
H168, located in the middle of the a-helix is of particular interest for the Cry1Aa toxin function because substituting H168 with Q, N, or R had different effects on toxicity.
CD data indicated secondary structural changes, with the primary changes occurring in the a-helix. Freeze-drying the samples minimized structural changes during their storage.
As can beseen in Table 3, the secondary structure element content of CRL7 without treatment of organic solvent and ionic liquids was a-helix: 43.46%, [beta]-sheet: 26.91%, [beta]-turn: 11.83%, and random coli: 17.79%, respectively.
In this last model, virtually the whole toxin, when associated with BBMV, is protected from proteinase K, with the exception that (in Cry1A toxins) a-helix 1 is cleaved off of the inserted form.