Re: [ccp4bb] Using Coot and CCP4 program for cryoEM data

2017-05-17 Thread Petr Leiman
If your signal goes all the way to the half Nyquist frequency, oversample your map to have the pixel size equal to 1/3rd of the highest resolution. Your map will look much better in coot. Real space fitting will work much better as well. Best, Petr > On May 17, 2017, at 11:24 AM, MyeongSeon

Re: [ccp4bb] Using Coot and CCP4 program for cryoEM data

2017-05-17 Thread Tom Burnley
Hi, CCP-EM (CCP4 sister project for cryoEM) can help you here. We have a EM specific interface for several CCP4 programs as well as some others and will handle map to mtz conversions for you. You can download the suite here: http://www.ccpem.ac.uk/download.php We recently ran a workshop on high

Re: [ccp4bb] Using Coot and CCP4 program for cryoEM data

2017-05-17 Thread Paul Emsley
On 17/05/2017 17:24, MyeongSeon Lee wrote: Hi, all. I have collected cryoEM data and want to use Coot and CCP4 program to build model and to refine it. 1. What is the steps to do this? 2. How do I convert cryoEM map file to MTZ file? CCPEM provides an increasingly sophisticated tool-set aim

Re: [ccp4bb] Using Coot and CCP4 program for cryoEM data

2017-05-17 Thread Pavel Afonine
Hi, 2. How do I convert cryoEM map file to MTZ file? > While technically you can do it, normally there is absolutely no need to do it. In cryo-EM the map is your data, not reflection data (structure factors!). So no need to 'massage' your data (the map) by converting it into "Fobs" and storing as

[ccp4bb] Using Coot and CCP4 program for cryoEM data

2017-05-17 Thread MyeongSeon Lee
Hi, all. I have collected cryoEM data and want to use Coot and CCP4 program to build model and to refine it. 1. What is the steps to do this? 2. How do I convert cryoEM map file to MTZ file? 3. Can I also use Phenix for this purpose? Thanks to all for your help in advance.