immature retroviral capsid

A patch of Mason-Pfizer monkey virus immature capsid at 8 Angstrom? resolution based on cryo-electron microscopy map (http://www.ebi.ac.uk/pdbe/entry/EMD-2089/). See publication (Bharat TA et al. Nature. 2012, 487(7407):385-389. doi: 10.1038/nature11169).