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alpha helix

noun

, Biochemistry.
  1. the rodlike spatial configuration of many protein molecules in which the polypeptide backbone is stabilized by hydrogen bonds between amino acids in successive helical turns.


alpha helix

noun

  1. biochem a helical conformation of a polypeptide chain, found abundantly in the structure of proteins
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


alpha helix

  1. A common structure of proteins, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds.
  2. Compare beta sheet


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Word History and Origins

Origin of alpha helix1

First recorded in 1950–55

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alpha globulinalpha-hydroxy acid