Tim, I have a file http://www2.uah.es/biomodel/model1/rna-prot/1gsg.pdb with protein -only Calpha- and RNA -only P- and Jmol shows trace etc happily So, it must be something in your file.
View entire thread
You seem to have CSS turned off. Please don't fill out this field.
Click URL instructions: Right-click on the ad, choose "Copy Link", then paste here → (This may not be possible with some types of ads)
Ad destination/click URL: