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Beta sheet

Three-dimensional structure^[1] of parts of a beta sheet in green fluorescent protein

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Interactive diagram of hydrogen bonds in protein secondary structure. Cartoon above, atoms below with nitrogen in blue, oxygen in red (PDB: 1AXC)

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.

^ "Animated GIF made by adapting a 3D model from Beta sheet - Proteopedia, Life in 3D". proteopedia.org.

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صحيفة بيتا Arabic Beta-list BS Làmina beta Catalan Beta-skládaný list Czech Β-Faltblatt German Beta-lameno EO Lámina beta Spanish صفحه بتا FA Beeta-levy Finnish Feuillet bêta French

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