To develop a community consensus on the data items needed for deposition of 3D density maps and atomic models derived from cryo-electron microscopy studies. We would like to examine what is already collected by EMDep (http://www.ebi.ac.uk/msd-srv/emdep/) at EBI and ADIT (http://deposit.pdb.org/adit/) at the RCSB for such depositions and what are the desirable additions in the near future.