1.12.98.1 6.5 7.25 deazaflavin reducing activity 395099 1.12.98.1 6.5 7.5 F420 reduction 395086 1.12.98.1 7 - F420 reduction 395088, 395095 1.12.98.1 7 7.5 - 395093 1.12.98.1 7.5 - methyl viologen reduction 395088 1.12.98.1 10 - optimum pH for methyl viologen reduction above pH 10 395095 1.12.98.1 11 - optimum pH for methyl viologen reduction above pH 11 395086