Hello All, I'm trying to back-FT an EM map to produce Fs and phases to use in molecular replacement, but am having a problem with running SFALL.
Here's the issue: When running the back-transform in SFALL (generating structure factors from a map), I get the following error: Incorrect sampling grid factors 255 255 255 The map parameters are given below. Does anyone have any idea of how to deal with this? Thanks, Larry Number of columns, rows, sections ............... 256 256 256 Map mode ........................................ 2 Start and stop points on columns, rows, sections -128 127 -128 127 -128 127 Grid sampling on x, y, z ........................ 255 255 255 Cell dimensions ................................. 459.00000 459.00000 459.00000 90.00000 90.00000 90.00000 Fast, medium, slow axes ......................... X Y Z Minimum density ................................. -1.24222 Maximum density ................................. 2.25668 Mean density .................................... 0.06370 Rms deviation from mean density ................. 0.00000 Space-group ..................................... 1 Number of titles ................................ 3 -- Lawrence Shapiro, Ph.D. Associate Professor Dept. of Biochemistry and Molecular Biophysics Jules and Doris Stein Professor of Research to Prevent Blindness Edward S. Harkness Eye Institute Columbia University 701 West 168th Street, 7th Floor New York, NY 10032 Tel: (212)342-6029 Fax: (212)342-6026 e-mail: [EMAIL PROTECTED] [EMAIL PROTECTED] http://www.shapirolab.org