Re: [ccp4bb] on space group

2015-05-12 Thread Mayer, Mark (NIH/NICHD) [E]
As other people have advised in response to some of your previous posts: Invest in a copy of Bernard Rupp's fantastic text book. Judging from the number of posts you make, you seem interested in learning the art of crystallography. This book will answer most if not all of your questions http://

Re: [ccp4bb] off-topic: Synchrotron look alike

2011-06-09 Thread Mayer, Mark (NIH/NICHD) [E]
The sad thing is, although Macs are great crystallography platforms, stereo is hard at best, ridiculously expensive compared to Linux systems, and still requires the use of CRTs which have not been manufactured for years ...

Re: [ccp4bb] while on the subject of stereo

2011-03-22 Thread Mayer, Mark (NIH/NICHD) [E]
what about the fashion statement made by cool glasses? From: Phoebe Rice [pr...@uchicago.edu] Sent: Tuesday, March 22, 2011 10:16 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] while on the subject of stereo My 2 cents worth on the stereo-dependent: 1)

Re: [ccp4bb] Fwd: [ccp4bb] FW: [ccp4bb] Resolution and distance accuracies

2011-01-06 Thread Mayer, Mark (NIH/NICHD) [E]
Dont forget all the "atomic resolution" 3Å structures! From: Pavel Afonine [pafon...@gmail.com] Sent: Thursday, January 06, 2011 6:23 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] Fwd: [ccp4bb] FW: [ccp4bb] Resolution and distance accuracies Hi, creat

Re: [ccp4bb] unknown density

2010-02-03 Thread Mayer, Mark (NIH/NICHD) [E]
I'd support BR's position. Why the compelling urge to fill every blob with atoms? Density should only be modeled when its interpretable. One can comment about the blob in a paper, and perhaps even show maps for the region, indicating that there might be something there if its believed to be a f

[ccp4bb] Definition of Fourier coefficients

2008-07-05 Thread Mayer, Mark (NIH/NICHD) [E]
Hi, What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map? I've dug a bit in web and CCP4 doc but not found an explanation, though I'm sure its there. Thanks, Mark