Methanotrophs have been specialized, it has a wide range of potential applications in Bio-catalys, Bio-remediation,CH4 Controls, Sensors and so on. Espiecially Methanotrophs as molecular recognition elements methanol or ethanol sensor have high selectivity, and it doesn't interfere from other alcohol. The mechanism should be dehydrogenase high select to alcohol, but the high selectivity mechanism is not clear. Address these issues, our group select strains ME25 and ME45, using pure culture, determin...