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Hi all,
first of all, i'm not a crystallographer. I did some molecular dynamics
simulations of DNA with water around it. I wanted to check the hydration
patterns so i did the following:

1> I selected set of 100 snapshots taken at 5ps intervals
2> Selected only water molecules located within 3.5Å of DNA in each snapshot
3> 100 sets of individual structure factors were calculated only for the
DNA in the sanpshots and average of those amplitudes treated as
experimental amplitudes
4> Average of DNA coordinates of the 100 snapshots were refined against
complex average structure factors using rigid, anneal, bgroup and minimize
protocols of CNS. The final file minimize.pdb is the pdb file i'm using.
5> Now for water, 100 sets of individual structure factors were calculated
only for the water in the sanpshots, complex average of these str. factors
calculated and then using F2MTZ and FFT routines of ccp4, i got the
corresponding electron density maps.

If i open the map and pdb in coot, it opens fine i.e. the map is aligned
on top of the pdb. But i wanted better quality pictures so tried opening
them in pymol. Pymol opens them fine separately. But when i open them
together, the map and pdb are on two different corners of the screen. How
do i tell pymol to align the map with the pdb?

Thanks for your help...
Regards,
Arvind

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