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. 2005 Jul 19;3(8):e250. doi: 10.1371/journal.pbio.0030250

Figure 5. M. tuberculosis APS Reductase Is a Monomer.

Figure 5

Equilibrium sedimentation experiments of M. tuberculosis APS reductase were performed using a Beckman Optima XL-I centrifuge at 4 °C. The concentration of APS reductase shown in this figure was 10 μM. However, as described in Materials and Methods, multiple concentrations of enzyme were analyzed, and in all cases we observed that the enzyme was a monomer. Fitting the data to a model of a single ideal species yielded a molecular mass of approximately 28.5 kDa.