Non-contiguous finished genome sequence and contextual data of the filamentous soil bacterium Ktedonobacter racemifer type strain (SOSP1-21T)

Yun-Juan Chang, Miriam Land, Loren Hauser, Olga Chertkov, Tijana Glavina Del Rio, Matt Nolan, Alex Copeland, Hope Tice, Jan-Fang Cheng, Susan Lucas, Cliff Han, Lynne Goodwin, Sam Pitluck, Natalia Ivanova, Galina Ovchinnikova, Amrita Pati, Amy Chen, Krishna Palaniappan, Konstantinos Mavromatis, Konstantinos Liolios, Thomas Brettin, Anne Fiebig, Manfred Rohde, Birte Abt, Markus Göker, John C. Detter, Tanja Woyke, James Bristow, Jonathan A. Eisen, Victor Markowitz, Philip Hugenholtz, Nikos C. Kyrpides, Hans-Peter Klenk, Alla Lapidus


Ktedonobacter racemifer corrig. Cavaletti et al. 2007 is the type species of the genus Ktedonobacter, which in turn is the type genus of the family Ktedonobacteraceae, the type family of the order Ktedonobacterales within the class Ktedonobacteria in the phylum ‘Chloroflexi’. Although K. racemifer shares some morphological features with the actinobacteria it is of special interest because it was the first cultivated representative of a deep branching unclassified lineage of otherwise uncultivated environmental phylotypes tentatively located within the phylum ‘Cloroflexi’. The aerobic, filamentous, non-motile, spore-forming Gram-negative heterotroph was isolated from soil in Italy. The 13,661,586 bp long non-contiguous finished genome consists of ten contigs and is the first reported genome sequence from a member of the class Ktedonobacteria. With its 11,453 protein-coding and 87 RNA genes it is the largest prokaryotic genome reported so far. It comprises a large number of over-represented COGs, particularly genes associated with transposons, causing the genetic redundancy within the genome being considerably larger than expected by chance. This work is a part of the Genomic Encyclopedia of Bacteria and Archaea project.



anaerobic, chemoorganotroph, filamentous, non-motile, Gram-positive, acidophilic, sporulating, transposons, broken-stick distribution, entropy, Ktedonobacteraceae, Chloroflexi, GEBA

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