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
InstitutionUT Technical Report
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.