Hi. I've always been able to work around this problem, but I do often have to work around it, so I was wondering whether there's an easier way. Let's say I open a PDB file in Coot and export the map that it generates from the mtz file. If I attempt to open this ccp4-formatted map in Chimera, the coordinates appear to transformed so that the model and map are wildly misaligned in space. Normally, I work around this problem by using the map-generating feature in Phenix, which generates a model and map that align in Chimera. However, in this case, I'm trying to compare the maps that Coot generates on the fly to the those produced by Phenix, so it would be nice to be able to export a map from Coot and open it in Chimera. Thanks very much. gsb ………………………………... Gabriel Brandt Assistant Professor Department of Chemistry Franklin & Marshall College PO Box 3003 Lancaster, PA 17604 ph: 717.358.4846 shipping address: 415 Harrisburg Ave Lancaster, PA 17603 ………………………………...