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• W2116541723 abstract "Many molecules are flexible and undergo significant shape deformation as part of their function, and yet most existing molecular shape comparison (MSC) methods treat them as rigid bodies, which may lead to incorrect shape recognition. In this paper, we present a new shape descriptor, named Diffusion Distance Shape Descriptor (DDSD), for comparing 3D shapes of flexible molecules. The diffusion distance in our work is considered as an average length of paths connecting two landmark points on the molecular shape in a sense of inner distances. The diffusion distance is robust to flexible shape deformation, in particular to topological changes, and it reflects well the molecular structure and deformation without explicit decomposition. Our DDSD is stored as a histogram which is a probability distribution of diffusion distances between all sample point pairs on the molecular surface. Finally, the problem of flexible MSC is reduced to comparison of DDSD histograms. We illustrate that DDSD is insensitive to shape deformation of flexible molecules and more effective at capturing molecular structures than traditional shape descriptors. The presented algorithm is robust and does not require any prior knowledge of the flexible regions." @default.
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• W2116541723 date "2010-09-24" @default.
• W2116541723 modified "2023-10-10" @default.
• W2116541723 title "Using diffusion distances for flexible molecular shape comparison" @default.
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• W2116541723 doi "https://doi.org/10.1186/1471-2105-11-480" @default.
• W2116541723 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2949899" @default.
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