Secondary protein structure: the Beta-pleated Sheet

The Beta-pleated sheet is a series of anti-parallel chains of covalently-linked amino acids, with adjacent chains linked by hydrogen bonds. The regular folding of each amino acid residue at the central carbon leads to a regular pleated pattern across chains. Note that the R-groups are directed perpendicularly to the plane of the sheet, and alternate above and below the sheet.

Figure © 2000 by Griffiths et al. ; All text material ©2005  by Steven M. Carr