Re: [ccp4bb] Molecular Replacement issues with a WD-40 7-bladed beta propeller

2007-05-11 Thread Eleanor Dodson
You dont say how close your sequence ID is for your new protein and the model. It is often very hard to kick start refinement with low homology And what about internal symmetry Is there a Non crystallographic translation? Does the self rotation function show a relationship between the two mole

Re: [ccp4bb] Molecular Replacement issues with a WD-40 7-bladed beta propeller

2007-05-11 Thread Matthew . Franklin
CCP4 bulletin board wrote on 05/10/2007 09:31:59 PM: > Hello, > I'm an undergraduate and recently crystallized and obtained 2.9A > diffraction data for a protein which is predicted to fold into a WD40 > 7-bladed beta-propeller structure (which has been crudely verified by > cryo-EM by another lab

Re: [ccp4bb] Molecular Replacement issues with a WD-40 7-bladed beta propeller

2007-05-11 Thread Dirk Kostrewa
Hello Scott, hmmm - it is quite difficult to do a good analysis of your problem, remotely. You've tried the enantiomorphic space group I4(3), just to be sure? In principle, the molecular replacement solution given by Phaser sounds good, but this is no proof of whether it's correct. What sounds

[ccp4bb] Molecular Replacement issues with a WD-40 7-bladed beta propeller

2007-05-10 Thread Scott Coyle
Hello, I'm an undergraduate and recently crystallized and obtained 2.9A diffraction data for a protein which is predicted to fold into a WD40 7-bladed beta-propeller structure (which has been crudely verified by cryo-EM by another lab). The space group appears to be I4(1) with unit cell pa