dictionary help| beta pleated sheet | medical dictionary |
<cell biology> Beta secondary structure in proteins consists of two almost fully extended polypeptide chains lying side by side, linked by interchain hydrogen bonds between peptide C=O and N H groups. The chains may run in the same or opposite directions (yielding parallel or antiparallel structures, respectively). When multiple chains are involved, an extended sheet, the pleated sheet, is formed.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
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