Cyanophora paradoxa is a freshwater species of Glaucophyte that is used as a model organism. C. paradoxa has two cyanelles or chloroplasts where nitrogen fixation occurs alongside the primary function of photosynthesis. Cyanelles are unusual organelles in that they retain a rudimentary peptidoglycan wall. The cyanelle genome of C. paradoxa strain LB 555 was sequenced and published in 1995. The nuclear genome was also sequenced and published in 2012.