The enzyme carbonic anhydrase is one of the speediest enzymes known. It catalyzes the rapid conversion of

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The enzyme carbonic anhydrase is one of the speediest enzymes known. It catalyzes the rapid conversion of CO2 gas into the much more soluble bicarbonate ion (HCO3–). The reaction: CO2 + H2O ↔ HCO3-+ His very important for the efficient transport of CO2 from tissues, where CO2 is produced by respiration, to the lungs, where it is exhaled. Carbonic anhydrase accelerates the reaction 107-fold, hydrating 105 COmolecules per second at its maximal speed. What do you suppose limits the speed of the enzyme? Sketch a diagram analogous to the one shown in Figure 3−13 and indicate which portion of your diagram has been designed to display the 107-fold acceleration.image

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Essential Cell Biology

ISBN: 9780393680362

5th Edition

Authors: Bruce Alberts, Karen Hopkin, Alexander Johnson, David Morgan, Martin Raff, Keith Roberts, Peter Walter

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