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tertiary structure

noun, Biochemistry
1.
the way in which the helixes or beta structures of a polypeptide are folded or arranged into a three-dimensional configuration.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for tertiary structure
  • The problem consists of determining tertiary structure of a protein given its primary sequence of amino acids.
tertiary structure in Science
tertiary structure  
The three-dimensional structure of a protein or nucleic acid. Amino acids form secondary structures such as alpha helices, beta sheets, and random coils, which in turn fold on themselves to form the tertiary structure of the protein. Only if a protein is correctly folded will it have its intended biological activity. Several diseases, such as cystic fibrosis and mad cow disease, are caused by alterations in the tertiary structure of one or more proteins. See also primary structure, quaternary structure, secondary structure.

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