Alpha helix
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Alpha helix
A common motif in the secondary structure of proteins, the alpha helix (α-helix) is a right- or left-handed coiled conformation, resembling a spring, in which every backbone N-H group donates a hydrogen bond to the backbone...
Alpha Helix
The R groups of the amino acids all extend to the outside.
The helix makes a complete turn every 3.6 amino acids.
The helix is right-handed; it twists in a clockwise direction.
alpha helix - one of two types of protein secondary structure. An alpha helix is a tight helix that results from the hydrogen bonding of the carboxyl (CO) group of one amino acid to the amino (NH) group of another amino acid.
alpha helix
A spiral shape constituting one form of the secondary structure of proteins, arising from a specific hydrogen-bonding structure.
alternation of generations ...
Alpha helix
This helical, usually right-handed arrangement of a polypeptide chain is a common secondary structure in proteins. The helix has maximal intra-chain hydrogen bonding.
Related Terms:
Polypeptide ...
The alpha helix and beta sheet are referred to as secondary structure (the bonds that maintain the secondary structure are hydrogen bonds). The 3-D shape of a protein is the result of it folding on itself.
secondary structure The structure of a protein created by the formation of hydrogen bonds between different amino acids; can be a pleated sheet, alpha helix, or random coil. Shape of a protein caused by attraction between R-groups of amino acids.
One type of secondary structure is the alpha helix, a region of the polypeptide that folds into a corkscrew shape. Beta strands are linear structures of polypeptides, bonding together to form a flat beta sheet.
 See also: Helix, Protein, Trans, Molecule, Proteins
  
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