| Method |
P.1 right column 3rd paragraph: "The bulk of [investigators’] experiments consist of time courses of 18O depletion from labeled inorganic carbon, a process catalyzed by the presence of the enzyme carbonic anhydrase (CA) in cells. CA, which catalyzes the hydration of CO2 and dehydration of HCO3−, plays critical roles in CCMs [CO(2) concentrating mechanisms] and is present in all [their] experimental organisms: Thalassiosira weissflogii, T. pseudonana, T. oceanica, and Phaedactylum tricornutum, (SI Text, Experimental Organisms)." |