Appion

I've noticed another issue with the PDB to model feature related to orientation. It allows icosahedral particles to be imported from the PDB and has an option to convert Viper orientation to EMAN so that averaging in EMAN will be correct. However, the particles are not deposited in the PDB in Viper orientation. There is no convention for virus capsid deposits in the PDB, but mainly they have the orientation they adopt in the crystal. After they are processed for inclusion in the Viper database they are converted to the Viper orientation. A third option to allow import of the virus coordinates directly from Viper would be an excellent addition in this case.