alpha helices

alpha helix

noun Biochemistry.
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.

Origin:
1950–55

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Collins
World English Dictionary
alpha helix
 
n
biochem a helical conformation of a polypeptide chain, found abundantly in the structure of proteins

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

alpha helix n.
The helical form, turned in a right-handed direction, of many proteins.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
alpha helix  
A common structure of proteins, characterized by a single, spiral chain of amino acids stabilized by hydrogen bonds. Compare beta sheet, random coil.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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