Re: [ccp4bb] Serine

2012-05-22 Thread Eleanor Dodson
lovely density - i would like to know what % of series have multiple conformations - it would need a survey I guess of PDB depositions, not just coordinates, but checking maps.. Eleanor On 21 May 2012 22:21, Uma Ratu rosiso2...@gmail.com wrote: Thank you All for you inputs. Uma On Mon,

Re: [ccp4bb] Serine

2012-05-22 Thread jens Preben Morth
Dear Uma 1. The protein sequence given in the databases, do from time to time have errors, particularly if you are working with old proteins (when the sequencing was done a long time ago). What you observe could also be a threonine or even a valine. You should check whether homologous

Re: [ccp4bb] Serine

2012-05-22 Thread jens Preben Morth
3. Of course if you are working on recombinant protein, you should double check the sequencing results from the cloning Preben On 5/21/12 11:21 PM, Uma Ratu wrote: Thank you All for you inputs. Uma On Mon, May 21, 2012 at 5:06 PM, Van Den Berg, Bert lambertus.vandenb...@umassmed.edu

Re: [ccp4bb] Serine

2012-05-21 Thread Jacob Keller
I believe that's an alternative conformationtry modeling as such and see what happens. Jacob On Mon, May 21, 2012 at 3:57 PM, Uma Ratu rosiso2...@gmail.com wrote: Dear All: Some of serine residues in my model have extra positive Fo-Fc density at the edge of side chain. Some don't have.

Re: [ccp4bb] Serine

2012-05-21 Thread Van Den Berg, Bert
Yes, as Jacob says, alternative conformation of the serine. Quite common. Bert From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of Uma Ratu [rosiso2...@gmail.com] Sent: Monday, May 21, 2012 4:57 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Serine

Re: [ccp4bb] Serine

2012-05-21 Thread Uma Ratu
Thank you All for you inputs. Uma On Mon, May 21, 2012 at 5:06 PM, Van Den Berg, Bert lambertus.vandenb...@umassmed.edu wrote: Yes, as Jacob says, alternative conformation of the serine. Quite common. Bert -- *From:* CCP4 bulletin board