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Appl. Environ. Microbiol., 02 1997, 636-643, Vol 63, No. 2
Copyright © 1997, American Society for Microbiology

Aerobic and anaerobic metabolism of 6,10,14-trimethylpentadecan-2-one by a denitrifying bacterium isolated from marine sediments

JF Rontani, MJ Gilewicz, VD Michotey, TL Zheng, PC Bonin and JC Bertrand
Centre d'Oceanologie de Marseille URA 41, Faculte des Sciences de Luminy, Marseille, France.

This report describes the metabolism of 6,10,14-trimethylpentadecan-2- one by a denitrifying bacterium (Marinobacter sp. strain CAB) isolated from marine sediments. Under aerobic and denitrifying conditions, this strain efficiently degraded this ubiquitous isoprenoid ketone. Several bacterial metabolites, 4,8,12-trimethyl-tridecan-1-ol, 4,8,12- trimethyltridecanal, 4,8,12-trimethyltridecanoic acid, Z-3,7- dimethylocten-2-oic acid, Z-3,7,11-trimethyldodecen-2-oic acid, and 6,10,14-trimethylpentadecan-2-ol, were formally identified, and different pathways were proposed to explain the formation of such isoprenoid compounds.


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