FIG 3.

Comparisons of protein abundances in the primary redox reactions possible for carbon metabolism during lactate-supported sulfate respiration and pyruvate fermentation by D. alaskensis G20 and CycA mutant I2. Protein abundances are relative counts from the most abundant isozyme of each enzyme denoted A through J. Abundance values given to the left of an arrow in the enzyme pathway are from G20, and those values to the right of arrow, in bold, are from I2. Multiple values for some enzymes reflect the abundance of each putative subunit of the particular isozyme. Sulfate respiration was achieved in lactate-sulfate (60 mM/30 mM) medium, and pyruvate fermentation used 60 mM pyruvate medium. Proteomic data obtained for all annotated isozymes for the enzymes listed (A to J) are given in Table 4. ND, no protein was detected.