-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear Ngo Duc Tri,
I would manually set the occupancy of chain A to about 30% and chain B's to 70% and try again.There is density for chain A present in the second picture, it is just weaker. Cheers, Tim On 07/27/12 10:01, Tri Ngo wrote: > Dear ccp4bb, > > > I am working on refinement of an enzyme structure. I notice an > alternative conformation (gauche+ and gauche-) on both residues Phe > and Tyr. > > > Here is the image of electron density before refinement. Based on > the different map intensity, I am quite sure there is an > alternative conformation on both positions. > > > http://i50.tinypic.com/29zaoap.jpg > > > However, after running occupancy refinement by Phenix, I don't see > the density map at the gauche- conformation of Tyr residue. Please > take a look at the image 2. > > > http://i50.tinypic.com/anzfrn.png > > > So do you think the gauche- conformation of Tyr exists in this > structure. Should I keep it in the final model because there is no > positive map there? > > > > Thank you very much for your input. > > - -- - -- Dr Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen GPG Key ID = A46BEE1A -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFQEmd7UxlJ7aRr7hoRAsy8AKCKlbHZxS+jR3JMIZbzhFQnRD13/ACeJk1D T7WJvAy48cOevzV6pJF4t2M= =lpal -----END PGP SIGNATURE-----
