Hi Dhiraj, Here is an idea: You could use "Values at Atom Positions" to interpolate map values onto the atoms and then select sets of atoms based on those values. http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/density/ density.html For example if you had open the data mymap.ccp4 and a structure, you could use Values at Atom Positions to assign an attribute to all the atoms, named by default value_mymap_ccp4. Atoms outside the bounds of your data will be assigned attribute values of zero. You could select all the atoms with attribute values less than, greater than, or equal to some value, for example: Command: select @/value_mymap_ccp4>5.0 I have no idea what value would work in your case, but maybe with some experimentation you could get all atoms reasonably near to some density that are also inside the bounds of the density map. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. meng@cgl.ucsf.edu UCSF Computer Graphics Lab and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco http://www.cgl.ucsf.edu/home/meng/index.html On Sep 7, 2007, at 1:07 PM, Dhiraj Srivastava wrote:
Hi all Is there any way that we can select atoms or residues within some distance of a ccp4 map in chimera? i know tha we can select map within some distance of any selected atoms but can we do opposite and if yes then how?
thank you Dhiraj -- Dhiraj K. Srivastava Department of Chemistry University of Missouri-Columbia MO, 65211 Ph. no. 001-573-639-0153_______________________________________________ Chimera-users mailing list Chimera-users@cgl.ucsf.edu http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users