[ccp4bb] Postdoctoral Fellow Position in Ubiquitin Biology available at Toronto

2011-08-20 Thread Atom Crystal
Postdoctoral Fellow in Ubiquitin Biology Description: The Structural Genomics Consortium (SGC), Toronto, is seeking a talented and self-motivated PhD scientist to study the structure, function, and mechanism of HECT-type E3 ubiquitin ligases and ubiquitin-specific proteases. The successful ca

Re: [ccp4bb] question about SIGF

2011-08-20 Thread Ronald E Stenkamp
James, could you please give more information about where and/or how you obtained the relationship "sigma(I)/I = 2*sigma(F)/F"? A different equation, sigma(I)=2*F*sigma(F), can be derived from sigma(I)^2 = (d(I)/dF)^2 * sigma(F)^2. I understand that that equation is based on normal distributi

[ccp4bb] Pittsburgh Diffraction Conference + Ohio Valley Crystallography Symposium: November 2-4, 2011

2011-08-20 Thread V Yee
Dear colleagues, On behalf of the organizing committee, we invite you to attend a joint meeting of the 69th Pittsburgh Diffraction Conference and 5th Ohio Valley Crystallography Symposium, to be held November 2-4, 2011 at Case Western Reserve University in Cleveland, Ohio. The program will co

Re: [ccp4bb] question about SIGF

2011-08-20 Thread James Holton
There is a formula for sigma(F) (aka "SIGF"), but it is actually a common misconception that it is simply related to F. You need to know a few other things about the experiment that was done to collect the data. The misconception seems to arise because the fist thing textbooks tell you is tha