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find Author "CHUZefei" 1 results
  • Quaternion-based Characterization of Protein α Helix

    This paper proposes a method based on quaternion for characterization α helix of proteins. The method defines the parameter called Quaternion Helix Axis Spherical Distance (QHASD) on the basis of mapping protein Cα frames′ helical axis onto a unit sphere, and uses QHASD to characterize the α helix of the protein secondary structure. Application of this method has been verified based on the PDBselect database, with an α helix characterization accuracy of 91.7%. This method possesses significant advantages of high detection accuracy, low computation and clear geometric significance.

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