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beta sheet

American  

noun

  1. Biochemistry. in many proteins, a structure composed of two or more parallel adjacent polypeptide chains arranged in a zigzag pattern that allows hydrogen bonds to form between the chains. Compare alpha helix, random coil.

beta sheet Scientific  

  1. A secondary 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.

  2. Compare alpha helix random coil

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