Alpha-mannosidase follows Michaelis-Menten kinetics. A 3 micromolar solution of alpha-mannosidase catalyzes the formation of .66 moles of p nitrophenol is-1 when incubated with the substrate 4-nitrophenyl alpha D-mannoside at a concentration 130 times greater than the Km for that substrate. What is alpha mannosidase Km