The phylogenetic distribution of the enzyme RuBisCo is limited to all photoautotrophs, both bacterial and eukaryotic.
Step-by-step explanation:
- This is because the RuBisCo mechanism takes place in all photoautotrophs and fixes inorganic CO2 into organic biomass or the biosphere through the Calvin Cycle of photosynthesis.
- The D-Ribulose-1, 5-Biphosphate Carboxylase-Oxygenase or RuBisCo is a catalytic enzyme that plays a crucial part in photosynthesis through carbon fixation by photoautotrophs including bacteria and eukaryotes.
- The RuBisCo takes part in photosynthesis especially in Calvin Cycle during fixation of carbon from carbon dioxide to D-Ribulose.
- Since it is a photosynthetic enzyme, it is present in photoautotrophs .