secondary structure

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Related to Secondary structure of proteins: Tertiary structure of proteins

secondary structure

n.
The three-dimensional structure of the polypeptide backbone of a protein (such as alpha helix, beta sheet, and coil patterns), or the sugar-phosphate backbone of a nucleic acid (such as the double helix pattern of DNA).
References in periodicals archive ?
The alpha helix ([alpha]-helix) is a common modified in the secondary structure of proteins and it is a right hand coiled or spiral conformation (helix) in which every backbone N-H group donates a hydrogen bond to the backbone C=O group of the amino acid located three or four residues earlier along the protein sequence.
Since the secondary structure of proteins and peptides is a critical component of their bioactivity, and since peptide-coated nanoparticles are used in a variety of diagnostic and imaging techniques, this study is likely to have a significant impact on chemistry and biology.
The papers describe contemporary mathematics and physics, but they also describes such topics of interest to oceanography as the secondary structure of proteins and an overview of arc complexes with proposed applications to macromolecular folding.