PROBIT: a statistical approach to modeling proteins from partial coordinate data using substructure libraries.

A program (PROBIT) has been developed that allows the reconstruction of a complete set of three-dimensional protein coordinates from alpha-carbon coordinates. The program generates a statistical measure of polypeptide conformational behavior for substructures in a defined structural context from a library of highly refined protein structures. These statistics provide a prescription for substructure substitution from the database to allow regeneration of the complete protein structure.

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