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Re: [ccp4bb]: Mapstretch
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> Dear crystallographic colleagues,
> Is there a way to "stretch" maps equally in all three dimensions using
> ccp4, mapman or another tool? I have an averaged map from EM (brix, ccp4
> and xplor format) which is about 1.5 times too small to fit my
> crystallographic model into. I guess something went wrong in the
> calculation of the EM-magnification, but I don't know with which program
> that map was made.
> Before people attack me - I just want to make a nice picture with
> bobscript showing which part of the protein my partial model fits into.
> --
> Mark van Raaij, m.vanraaij@chem.leidenuniv.nl
ok, if you promise it's only for purposes of illustration ...
write the map in an ascii format (e.g., EZD format with
MAPMAN); edit this file and multiply all three unit cell
lengths by 1.5; convert the map back into CCP4 or whatever
format with MAPMAN - i think this should work
come to think of it, it might even work if you change the
cell lengths with the CEll command inside MAPMAN and then
mappage the map
--dvd
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Gerard J. Kleywegt
[Research Fellow of the Royal Swedish Academy of Sciences]
Dept. of Cell & Molecular Biology University of Uppsala
Biomedical Centre Box 596
SE-751 24 Uppsala SWEDEN
http://xray.bmc.uu.se/gerard/ mailto:gerard@xray.bmc.uu.se
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