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beta sheet

   Also found in: Wikipedia 0.03 sec.
beta sheet
n.
A structure that occurs in many proteins and consists of two or more parallel adjacent polypeptide chains arranged so that hydrogen bonds can form between the chains.
beta sheet
A structure that occurs in many proteins and consists of two or more parallel adjacent polypeptide chains arranged in such a way that hydrogen bonds can form between the chains. Unlike in an alpha helix where the amino acids form a coil, in beta sheets the amino acids are arranged in a zigzag pattern that forms a straight chain. The proteins in silk have a beta-sheet structure. Compare alpha helixrandom coil


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? Mentioned in ? References in periodicals archive
 
Molecular dynamics results, which reproduce the measured quasielastic neutron spectra extremely well, show that the observed dynamic changes arise primarily from the particular region of the protein that forms a beta sheet in the native state and unfolds to a random coil in the molten globule.
Molecular dynamics simulations and neutron scattering yield new ... by Journal of Research of the National Institute of Standards and Technology
In a beta sheet, a string of amino acids folds accordion-fashion into parallel segments oriented in alternating directions to form a flat sheet.
Motif for Infection by PETERSON, IVARS / Science News
The chain folds back and forth on itself to create a structure, called a beta sheet, that resembles accordion pleats.
An alphabet for a letter-perfect protein by Wu, Corinna / Science News
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