Microbiology Resource Announcements (MRA) is an online-only, fully open access journal that publishes articles announcing the availability of any microbiological resource deposited in a repository available to the community. In addition to considering genome sequences of prokaryotic and eukaryotic microbes and viruses in public databases, MRA will consider metagenomics sequences, amplicon sequence collections, metabolomics data, proteome data, culture collections, mutant libraries, plasmids and other genetic constructs, publicly available databases and software, and protocols and workflows. Manuscripts submitted to MRA will be peer reviewed for appropriate content and handled by a board of senior editors who will accept manuscripts at their discretion.