Prosthecobacter fluviatilis sp. nov., which lacks the bacterial tubulin btubA and btubB genes Takeda, Minoru and Yoneya, Akiko and Miyazaki, Yuichi and Kondo, Keiko and Makita, Hiroko and Kondoh, Masashi and Suzuki, Ichiro and Koizumi, Jun-ichi,, 58, 1561-1565 (2008), doi = https://doi.org/10.1099/ijs.0.65787-0, publicationName = Microbiology Society, issn = 1466-5026, abstract= Leptothrix cholodnii is a sheathed bacterium often found in metal-rich and oligotrophic aquatic environments. A bacterial strain that is able to degrade the NaOH-treated sheath of L. cholodnii was isolated. The isolate was a Gram-negative, aerobic and prosthecate bacterium. The optimum growth temperature and pH were 30 °C and pH 7.0, respectively. The DNA G+C content was 62.9 mol%. The major respiratory quinone was MK-6. A phylogenetic analysis based on the 16S rRNA gene indicated that the isolate is a member of the genus Prosthecobacter. The nearest relative was the type strain of Prosthecobacter vanneervenii, with a similarity of 97.1 %. However, the isolate does not possess the bacterial tubulin genes, btubA and btubB, unique to known species of the genus Prosthecobacter. It is proposed that the isolate represents a novel species, Prosthecobacter fluviatilis sp. nov. The type strain is HAQ-1T (=JCM 14805T =KACC 12649T =KCTC 22182T)., language=, type=