Type II secretion is required for maximal DMSO reduction. Anaerobic
growth of S. oneidensis strains with DMSO as the sole
electron acceptor. Strains are MR-1 (■), JG91
(gspE, ▴), JG92 (gspJ,
•), and JG94 (pilD, ▾). Error bars
represent data range for duplicate cultures.