Genome sequence of Nitrosomonas sp. strain AL212, an ammonia-oxidizing bacterium sensitive to high levels of ammonia

Abstract

Nitrosomonas sp. strain AL212 is an obligate chemolithotrophic ammonia-oxidizing bacterium (AOB) thatwas originally isolated in 1997 by Yuichi Suwa and colleagues. This organism belongs to Nitrosomonas cluster6A, which is characterized by sensitivity to high ammonia concentrations, higher substrate affinity (lower Km),and lower maximum growth rates than strains in Nitrosomonas cluster 7, which includes Nitrosomonas europaeaand Nitrosomonas eutropha. Genome-informed studies of this ammonia-sensitive cohort of AOB are needed, asthese bacteria are found in freshwater environments, drinking water supplies, wastewater treatment systems,and soils worldwide. © 2011, American Society for Microbiology.