Thank you all for your kind reply.. On Mon, Jun 17, 2013 at 7:02 PM, <herman.schreu...@sanofi.com> wrote:
> ** > Dear Faisal, > > I might be missing something, but why not ask the annotator instead of the > bulletin board? He should know which value is meant. For me, a sigma > belongs to a set of observations or parameters and without any further > information one can only guess (as Ed just did) which set. My guess would > be, that instead of structure file, structure factor file was meant and > that somehow a negative sigma slipped in for one of the structure factors, > but again that is just guessing. > > My two cents, > Herman > > > ------------------------------ > *Von:* CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] *Im Auftrag von > *Faisal Tarique > *Gesendet:* Montag, 17. Juni 2013 08:41 > *An:* CCP4BB@JISCMAIL.AC.UK > *Betreff:* [ccp4bb] sigma value in structure file > > Dear all > > During PDB deposition the annotator me to verify and review the sigma > value in the structure file which in my case was -0.03. I have some basic > queries and request you all to please answer them. My first question is, > what actually is a "sigma value" of a structure file. 2nd) where the value > is mentioned?. 3rd) and What is the optimum sigma value range ? > > -- > Regards > > Faisal > School of Life Sciences > JNU > > -- Regards Faisal School of Life Sciences JNU
