The β sheet (also β-pleated sheet) is the second form of regular secondary structure in proteins, only somewhat less common than the alpha helix. Beta sheets consist of beta strands connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet.

Beta Sheet
Beta Sheet
Beta Sheet
Quantification of beta-sheet amyloid fibril structures with thioflavin T
Beta-sheet breaker peptides inhibit fibrillogenesis in a rat brain model of amyloidosis: implications for Alzheimer's therapy
Measurement of the beta-sheet-forming propensities of amino acids.
Nanoconfinement controls stiffness, strength and mechanical toughness of beta-sheet crystals in silk
A thermodynamic scale for the beta-sheet forming tendencies of the amino acids.
Propagating structure of Alzheimer's beta-amyloid(10-35) is parallel beta-sheet with residues in exact register.
Solid state NMR reveals a pH-dependent antiparallel beta-sheet registry in fibrils formed by a beta-amyloid peptide.
Determining Beta Sheet Crystallinity in Fibrous Proteins by Thermal Analysis and Infrared Spectroscopy
Strain-dependent differences in beta-sheet conformations of abnormal prion protein.
Minimal model systems for beta sheet secondary structure in proteins.