[3dem] mmCIF format announcement

[Osman Salih]

Dear 3DEM,

Just a gentle reminder that from July 1st 2019 onward, mmCIF format 
files will become mandatory for crystallographic depositions to the 
Protein Data Bank, and actively encouraged for EM depositions.

For full details:
https://www.wwpdb.org/news/news?year=2019#5c6ad3c5ea7d0653b99c8766

EMDB
EMBL-EBI, Wellcome Genome Campus,
Hinxton, Cambridgeshire,
CB10 1SD. UK