Structure and Properties of Peptides
In β-pleated sheet structures neighbouring

neighboring chains are hydrogen bonded
neighboring chains are connected by a-helices
neighboring residues are hydrogen bonded
chains lie in a flat plane

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Structure and Properties of Peptides
Secondary structure in protein refers to

linear sequence of amino acids joined together by peptide bond
regular folding of regions of the polypeptide chain
three dimensional arrangement of all amino acids in polypeptide chain
protein made up of more than one polypeptide chain

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