Changes in the Polypeptide Composition of the Cytoplasmic Membrane in the Cyanobacterium Anacystis nidulans during Adaptation to Low CO2 Conditions

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Abstract
When cells of Anacystis nidulans grown under high CO2 conditions (3%) were transferred to low CO2 conditions (0.05%), their ability to transport extracellular inorganic carbon (Ci) into the cells increased severalfold. There was a marked increase of 42-kDa polypeptide in the cytoplasmic membranes during the adaptation to low CO2 conditions, while no changes were observed in the polypeptide compositions of the thylakoid membranes and cell walls. The results suggested that the increase of the 42-kDa polypeptide during adaptation is involved in the increased ability to transport Ci