Re: [ccp4bb] Question about map cutting..

2008-06-23 Thread Eleanor Dodson
Partha Chakrabarti wrote: Hi, Is it possible to cut out a spherical map around a heavy atom site directly without having to make bones or building something? I want to place that in a larger P1 cell and use that for phased molecular replacement (Phaser / Molrep).. can someone point me how to do

[ccp4bb] Question about map cutting..

2008-06-20 Thread Partha Chakrabarti
Hi, Is it possible to cut out a spherical map around a heavy atom site directly without having to make bones or building something? I want to place that in a larger P1 cell and use that for phased molecular replacement (Phaser / Molrep).. can someone point me how to do that? Regards, Partha

Re: [ccp4bb] Question about map cutting..

2008-06-20 Thread Kevin Cowtan
Yup. Make a PDB file with 1 atom at the centre of your sphere. Use Map and Mask Utilities/Create and edit mask to make a spherical mask about this atom. Increase the radius as big as you want. Use Map and Mask Utilities/Mapcutting There may be an issue of having the mask on the same grid as