Figure 1From: Identification and characterization of the intracellular poly-3-hydroxybutyrate depolymerase enzyme PhaZ of Sinorhizobium melilotiViable cell counts of S. meliloti PHB mutants following incubation in minimal media with no exogenous carbon source added. Values presented are the average of three independent cultures. Rm1021 cells are able to maintain viability for almost 4 weeks following transition to a carbon-free environment. In contrast, both Rm11105 and Rm11430 demonstrate a significant decrease in viability under the same conditions.Back to article page