Fig. 4From: Genome analysis of the freshwater planktonic Vulcanococcus limneticus sp. nov. reveals horizontal transfer of nitrogenase operon and alternative pathways of nitrogen utilizationPhylogeny of the NifHDK protein concatamer. Different molybdenum, vanadium and iron nitrogenases from different bacteria are represented. Concatenations of paralogous proteins involved in the synthesis of chlorophyll/bacteriochlorophyll (Bch/ChlLNB) were used to root the phylogeny. The novel nitrogenase from the freshwater Vulcanococcus limneticus sp. nov. is red coloured. Cyanobacterial NifHDK are represented with a star symbolBack to article page