Re: [ccp4bb] solving difficult protein structure

2021-04-27 Thread Rasmus Fogh
Hi Swati, I am very far from expert, but if you have anisotropic diffraction have you thought of bringing in Staraniso - public server at https://staraniso.globalphasing.org? That should help keeping reflections with higher I/sigma and rejecting those with mostly noise. Yours, Rasmus On 23/

Re: [ccp4bb] solving difficult protein structure

2021-04-24 Thread Swati Gupta
Thanks for the suggestions.. actually I have been trying for quite some already and this has lots of solvent channels ..hexagonal crystal with p62 group..not coming to a better resolution with completeness but am trying to grow better and also trying to work out the data I already have On Sun, 25

Re: [ccp4bb] solving difficult protein structure

2021-04-24 Thread Kevin Jude
If the I/sigI and CC1/2 that you quote are for the outer resolution shell of your data, you can use data to a higher resolution limit. It may still be tricky, and rebuilding will be worse; as Eleanor says you'll probably be better off growing a better crystal. Good luck! -- Kevin Jude, PhD (he/hi

Re: [ccp4bb] solving difficult protein structure

2021-04-23 Thread Eleanor Dodson
Finding a solution will be very difficult then. Eleanor On Fri, 23 Apr 2021 at 21:11, Swati Gupta wrote: > My data is moderate anisotropic also with a high Wilson b factor greater > than 200 > > On Sat, 24 Apr, 2021, 01:19 Eleanor Dodson, > wrote: > >> If you were lucky the new crystal might ha

Re: [ccp4bb] solving difficult protein structure

2021-04-23 Thread Swati Gupta
My data is moderate anisotropic also with a high Wilson b factor greater than 200 On Sat, 24 Apr, 2021, 01:19 Eleanor Dodson, wrote: > If you were lucky the new crystal might have the same cell and > spacegroup as your model, but otherwiseThis is a case for molecular > replacement.? > > My cours

Re: [ccp4bb] solving difficult protein structure

2021-04-23 Thread Eleanor Dodson
If you were lucky the new crystal might have the same cell and spacegroup as your model, but otherwiseThis is a case for molecular replacement.? My course of action using CCP4I2 Process data carefully and look for any warnings. Align your new sequence with the model using clustalw Edit the model

[ccp4bb] solving difficult protein structure

2021-04-23 Thread Swati Gupta
Dear all, how do I proceed with solving a protein structure with 3.9 A resolution and an i/sig i of 1.3 and cchalf of 0.8. The homologous protein has 48% identity to be used as template. Kindly help with what programs to run. Thanks Swati #