| beta pleated sheet | <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. (18 Nov 1997) |
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| pleated sheet |
A secondary protein structure characterized by antiparallel molecules with zigzag structure.
Ãâó: www.hillsdale.edu/AcademicAssociations/Chemistry/s...
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| pleated s. |
a secondary structure occurring in many proteins, consisting of several polypeptide chains running in the same direction (a parallel pleated sheet) or in alternating directions (an antiparallel pleated sheet) and joined by hydrogen bonds between the imino hydrogen of each peptide bond and the carbonyl oxygen of a peptide bond in the next chain over. Called also β structure, β s., and β pleated s. Click here to view image■Diagram of a portion of a pleated sheet structure formed by interstrand hydrogen bonding between two polypeptide regions.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| pleated | folded into pleats |
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