I don't understand why should D be low for an incomplete shell? According to Randy's tutorial:
D includes effects of: difference in position or scattering factor missing atoms difference in overall scale or B-factor i.e. all kinds of error in the SF model, but this is surely uncorrelated with completeness? -- Ian > -----Original Message----- > From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On > Behalf Of Eleanor Dodson > Sent: 23 March 2007 09:03 > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] Highest shell standards > > This is a good point - I had thought that D would be very low for an > incomplete shell, but that doesnt seem to be true.. > > Garib - what do you think? > Eleanor > > > Petrus H Zwart wrote: > >> I typically process my data to a maximum I/sig near 1, and > >> completeness in > >> the highest resolution shell to 50% or greater. It > >> > > > > What about maps computed of very incomplete datasets at > high resolution? Don't you get a false sense of details when > the missing reflections are filled in with DFc when computing > a 2MFo-DFc map? > > > > P > > > > > > > > Disclaimer This communication is confidential and may contain privileged information intended solely for the named addressee(s). It may not be used or disclosed except for the purpose for which it has been sent. If you are not the intended recipient you must not review, use, disclose, copy, distribute or take any action in reliance upon it. If you have received this communication in error, please notify Astex Therapeutics Ltd by emailing [EMAIL PROTECTED] and destroy all copies of the message and any attached documents. Astex Therapeutics Ltd monitors, controls and protects all its messaging traffic in compliance with its corporate email policy. The Company accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the Astex Therapeutics domain. Unless expressly stated, opinions in this message are those of the individual sender and not of Astex Therapeutics Ltd. The recipient should check this email and any attachments for the presence of computer viruses. Astex Therapeutics Ltd accepts no liability for damage caused by any virus transmitted by this email. E-mail is susceptible to data corruption, interception, unauthorized amendment, and tampering, Astex Therapeutics Ltd only send and receive e-mails on the basis that the Company is not liable for any such alteration or any consequences thereof. Astex Therapeutics Ltd., Registered in England at 436 Cambridge Science Park, Cambridge CB4 0QA under number 3751674
