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TitleFinding Alpha-Helices in Skeletons (Tech Report)
Author(s) Nina Amenta, Sunghee Choi, Maria E. Jump, Ravi Krishna Kolluri, Thomas Wahl
Keyword(s)Crystallography, Computational Geometry, Object Recognition
Year 2002
NumberTR-02-27
InstitutionUT Technical Report
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Abstract We consider a problem which is part of the process of determining the three-dimensional structure of a protein molecule using X-ray crystallography: given an estimated map of the electron density of the molecule as a function on three-dimensional space, we identify regions which are likely to belong to -helices. Our approach is to compute a new kind of skeleton - the power shape - and then identify the helical substructures within the power shape with a variant of geometric hashing.