Re: [ccp4bb] Calculation of electron density map for a twinned dataset

2010-04-19 Thread Jon Schuermann
Mariah, Although your data may be perfectly twinned, more likely your data 'shows about 50 % twinning' because you are not in the correct space group. How are you determining your twin fraction and in what space group? Jon -- Jonathan P. Schuermann, Ph. D. Beamline Scientist NE-CAT, Buil

Re: [ccp4bb] Calculation of electron density map for a twinned dataset

2010-04-19 Thread Eleanor Dodson
The newest refmac will deal with this and generate maps with twinning corrected.. Eleanor protein.chemist protein.chemist wrote: Hi All, I have a dataset that shows about 50 % twinning. I was curious what will be the best way for the refinement and calculation of electron density maps, includ

[ccp4bb] Calculation of electron density map for a twinned dataset

2010-04-19 Thread protein.chemist protein.chemist
Hi All, I have a dataset that shows about 50 % twinning. I was curious what will be the best way for the refinement and calculation of electron density maps, including the composite omit map. Thanks a lot. Mariah -- Mariah Jones Department of Biochemistry University of Florida