Then I suspect the sequence is overriding the model.

My preferred approach.
Get a sequence alignment from somewhere and use CHAINSAW to edit the model you want to use. That is documented! And it will edit both monomers in turn I believe..

Then you will have a dimer with the appropriate sequence editing done for you.

Now give that toMOLREP without any sequence. Now I am pretty sure it will use your whole model. It will determine the non-cryst tramslation and apply it automatically to all copies I guess but if you have strong NCT then it usually more or less relates allmolecules..
.

Pseudo centring - what do you mean by that?

Twinning - Aaagh
Eleanor


tommi kajander wrote:
yes i am, i haven't got a clue, it always seems to be doing somethig other than i want it to.. to be honest the manual is prety obsolete and non-existent, would be nice if the authors provided
more info on current vresion.

tommi


On 1.10.2009, at 11.10, Eleanor Dodson wrote:

How can that be!  Are you also providing a sequence?

Eleanor

Tommi Kajander wrote:
Hi,
I have been using a dimer as a search model in MOLREP (there will be several in AU), for some reason the program tends to break the dimer into monomers wihtout asking me.. how is this determined in the program... a more detailed manual would be nice, also on the output as the different contrasts and their meaning appear bit cryptic to me. (i am beginning to get the hang of it
but its still bit fuzzy..)

Also if i am searching for number of say these dimers and there is a speudo-translation vector should it be used all the time? (i would assume not all the searched unit are related necessarily by the translational NCS) (to make it even merrier, there is both proper speudo centering and "just" translational NCS .. and you can only specify one vector... if we are lucky its also twinned...

thanks for comments,
Tommi





Tommi Kajander, Ph.D.
Macromolecular X-ray Crystallography
Research Program in Structural Biology and Biophysics
Institute of Biotechnology
P.O. Box 65 (Street: Viikinkaari 1, 4th floor)
University of Helsinki
FIN-00014 Helsinki, Finland
Tel. +358-9-191 58903
Fax  +358-9-191 59940



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