Abstract

Eight strains of non-methane-utilizing aerobic methylotrophic bacteria able to grow on chloromethane as the carbon and energy source have been isolated. Based on their phenotypic and genomic characteristics the new isolates were classified as Hyphomicrobium spp. (strains CM1, CM2, CM9, CM29, CM35) and Methylobacterium spp. (strains CM4, CM30, CM34). All the strains possessed an inducible yet unknown enzyme that catalyzed conversion of chloromethane to HCl and formaldehyde. The latter was oxidized via formate to CO2 or assimilated through icl+ or icl variants of the serine pathway.

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