write the information about β-Pleated sheet
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B-pleated sheets as far as I remember its. related to silicones I guess come on my question for more information
The secondary structure is called β-pleated sheet when two or more polypeptide chains, called strands, line up side-by-side The β-pleated sheet structure of protein consists of extended strands of polypeptide chains held together by hydrogen bonding. The characteristics of β-pleated sheet structure are
• The C=O and N-H bonds lie in the planes of the sheet.
• Hydrogen bonding occurs between the N-H and C=O groups of nearby amino acid residues in the neighbouring chains.
• The R groups are oriented above and below the plane of the sheet.
The β-pleated sheet arrangement is favoured by amino acids with small R groups.
Most proteins have regions of ∝-helix and β-pleated sheet, in addition to other random regions that cannot be characterised by either of these secondary structures. For example: Spider dragline silk protein is strong due to β-pleated sheet region, yet elastic due to ∝-helical regions in it.