Bacillus megaterium has both a functional BluB protein required for DMB synthesis and a related flavoprotein that forms a stable radical species.
Collins HF, Biedendieck R, Leech HK, Gray M, Escalante-Semerena JC, McLean KJ, Munro AW, Rigby SE, Warren MJ, Lawrence AD. PLoS One. 2013; 8(2):e55708. Epub 2013 Feb 14.