Back صحيفة بيتا Arabic Beta-list BS Làmina beta Catalan Beta-skládaný list Czech Β-Faltblatt German Beta-lameno Esperanto Lámina beta Spanish صفحه بتا Persian Beeta-levy Finnish Feuillet bêta French
The beta sheet (β-sheet, also β-pleated sheet) is a common motif of the regular protein secondary structure. Beta sheets consist of beta strands (β-strands) connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet. A β-strand is a stretch of polypeptide chain typically 3 to 10 amino acids long with backbone in an extended conformation. The supramolecular association of β-sheets has been implicated in the formation of the fibrils and protein aggregates observed in amyloidosis, Alzheimer's disease and other proteinopathies.
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