Sphingomonas paucimobilis is an enviromental non fermentative gram negative bacteria (Pseudomonas alike), aerobic, with a single polar flagellum that has slow motility; usually founded in water or mug/humid soil. It fits really well even in biofilms and dirt, also in some plastic medical equipment, like catheters ect...

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http://www.ncbi.nlm.nih.gov/pubmed/20434794

Sphingomonas paucimobilis is a bacterium that is characterized by its ability to degrade xenobiotic compounds such as pesticides, hydrocarbons and aromatic compound. Some produce fitohormones, fix nitrogen and immobilize heavy metals such as copper and cadmium.