Onemain issue in aquatic systems,where most cyanobacteria live, is
the low availability of inorganic carbon (Ci), which is controlled by different
external parameters like pH, temperature, and gas-exchange.
[14]. The CO2 diffusion in air is faster than in water and consequently
the equilibrium between CO2 and HCO3
−, in water, is relatively slow
for pHs between 7 and 8.5. Therefore, cyanobacteria have developed a
CO2-concentrating mechanism (CCM) in order to ensure that RuBisCO
is surrounded by CO2 and thereby avoid the oxygenase reaction.
Since the cyanobacterial RuBisCO has low affinity for CO2, these microorganisms
may not have survived in the aquatic habitat without a
CCM
Onemain issue in aquatic systems,where most cyanobacteria live, isthe low availability of inorganic carbon (Ci), which is controlled by differentexternal parameters like pH, temperature, and gas-exchange.[14]. The CO2 diffusion in air is faster than in water and consequentlythe equilibrium between CO2 and HCO3−, in water, is relatively slowfor pHs between 7 and 8.5. Therefore, cyanobacteria have developed aCO2-concentrating mechanism (CCM) in order to ensure that RuBisCOis surrounded by CO2 and thereby avoid the oxygenase reaction.Since the cyanobacterial RuBisCO has low affinity for CO2, these microorganismsmay not have survived in the aquatic habitat without aCCM
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