[Chimera-users] building a alpha helix

Dear All I was wondering if there is any tool by which can generate an alpha helix, as an extension of a truncated crystal structure docked in the density map. The possibility of the truncated portion of the protein behaving as an alpha helix has been predicted by different groups. The density map shows some empty regions (after the crystal structure has been docked) just good enough for an alpha helix to fit in. Best Andy Dr. Anindito Sen (Ph.D) Research Associate , Dept. of Biochemistry and Molecular Genetics University of Virginia Box 800733 Charlottesville, VA 22908