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      First Insights into the Draft Genome of Clostridium colicanis DSM 13634, Isolated from Canine Feces

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          Abstract

          Clostridium colicanis DSM 13634 is a strictly anaerobic, rod-shaped, and spore-forming bacterium. It produces acids from common sugars such as glucose and fructose. The draft genome consists of one chromosome (2.6 Mbp) and contains 2,159 predicted protein-encoding genes.

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          Genetic confirmation of identities of neurotoxigenic Clostridium baratii and Clostridium butyricum implicated as agents of infant botulism.

          Two unusual neurotoxigenic clostridia isolated from fecal specimens from patients with type F and type E infant botulism were phenotypically identical to the existing species Clostridium baratii and C. butyricum, respectively. DNA hybridization experiments confirmed that one strain was C. baratii and that the other was C. butyricum. These species therefore do contain neurotoxigenic strains and are possible causes of infant botulism.
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            Clostridium colicanis sp. nov., from canine faeces.

            Morphological, biochemical and molecular genetic studies were performed on an unknown, anaerobic, rod-shaped organism isolated from faeces of a canine. The organism was tentatively identified as a member of the genus Clostridium based on its cellular morphology and ability to form endospores but, biochemically, it did not appear to correspond to any recognized species of this genus. Comparative 16S rRNA gene sequence analysis showed that the bacterium represents a previously unrecognized subline within Clostridium rRNA group I (Clostridium sensu stricto), which includes Clostridium butyricum, the type species of the genus. The nearest phylogenetic relatives of the unknown bacterium corresponded to Clostridium absonum, Clostridium baratii, Eubacterium budayi, Eubacterium moniliforme, Eubacterium multiforme and Eubacterium nitritogenes, but 16S rRNA sequence divergence values of > 3% demonstrated that it represents a novel species. Based on the findings presented, a novel species, Clostridium colicanis sp. nov., is described, with the type strain 3WC2T (=CCUG 44556T =DSM 13634T).
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              Isolation of Clostridium absonum and its cultural and biochemical properties.

              A new procedure for isolation of Clostridium absonum was devised. Sixtyseven strains of C. absonum were isolated from 135 soil samples, but no strain of C. absonum could be found from human fecal samples. The lecithinase, hemolysin, and lethal toxin in the culture filtrates of this species exhibited low avidity for C. perfringens type A antitoxin. The three activities were inseparable by the present method of purification. A reinvestigation of biochemical properties revealed that incomplete suppression of lecithinase reaction by C. perfringens type A antitoxin and no fermentation of raffinose, melibiose, and starch are useful criteria to differentiate C. absonum from C. perfringens, and that positive, although weak, gelatin liquefaction and fermentation of trehalose are useful to differentiate it from C. paraperfringens.
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                Author and article information

                Journal
                Genome Announc
                Genome Announc
                ga
                ga
                GA
                Genome Announcements
                American Society for Microbiology (1752 N St., N.W., Washington, DC )
                2169-8287
                19 May 2016
                May-Jun 2016
                : 4
                : 3
                : e00385-16
                Affiliations
                [a ]Genomic and Applied Microbiology & Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, Georg-August University, Göttingen, Germany
                [b ]Members of the Applied Bioinformatics in Microbiology Course of the Microbiology and Biochemistry MSc/PhD program, Georg-August University, Göttingen, Germany
                Author notes
                Address correspondence to Rolf Daniel, rdaniel@ 123456gwdg.de .
                Article
                genomeA00385-16
                10.1128/genomeA.00385-16
                4888986
                27198021
                85cce55d-c44c-4d25-bcf6-2e760365a1a3
                Copyright © 2016 Poehlein et al.

                This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

                History
                : 24 March 2016
                : 29 March 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 7, Pages: 2, Words: 932
                Funding
                Funded by: Nds. Ministerium für Wissenschaft und Kultur (MWK)
                Award Recipient : Anja Poehlein Award Recipient : Tobias Schilling Award Recipient : Udhaya Bhaskar Sathya Narayanan Award Recipient : Rolf Daniel
                The funders (MWK) had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
                Categories
                Prokaryotes
                Custom metadata
                May/June 2016

                Genetics
                Genetics

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