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Protein & Peptide Letters


ISSN (Print): 0929-8665
ISSN (Online): 1875-5305

Structural Patterns in α Helices and β Sheets in Globular Proteins

Author(s): Nicholus Bhattacharjee and Parbati Biswas

Volume 16, Issue 8, 2009

Page: [953 - 960] Pages: 8

DOI: 10.2174/092986609788923239

Price: $65


Secondary structural elements like α-helix and β-sheet constitute the major components of proteins. Here we present a systematic position wise analysis of the structural and sequence characteristics of alpha-helices and beta-sheets. Helix and sheet are found to follow a complementary distribution pattern along the protein chain length. We have calculated the conformational parameters of the amino acids forming helices and sheets. Other properties like hydrophobicity, temperature-factor and relative entropy are found to be correlated with the distribution pattern of these secondary structures. This gives an insight about the conservation or variation of the secondary structure in proteins, which may have significant implications on de novo protein design.

Keywords: Complementary distribution pattern, conformational parameter, hydrophobicity, temperature factor, relative entropy

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