Find kcat for a reaction in which Vmax is 4 x 10^-4 mol•min-1 and the reaction mixture contains one microgram of enzyme (the molecular weight of the enzyme is 200,000 D).
a. 2 x 10^-11 min^-1
b. 2 x 10^-14 min^-1
c. 8 x 10^9 min^-1
d. 8 x 10^7 min^-1
e. 4 x 10^8 min^-1