Thermoanaerobacter yonseiensis sp. nov., a novel extremely thermophilic, xylose-utilizing bacterium that grows at up to 85 degrees C.

Kim, Byoung-Chan; Grote, Ralf; Lee, Dong Hoon; Antranikian, Garabed; Pyun, Yu‐Ryang

doi:10.1099/00207713-51-4-1539

Cited by 47 publications

(35 citation statements)

References 43 publications

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“…It was shown that these ions were very important for the stabilization of the multimeric structure, resulting in enzyme thermostability (Cha et al, 1994;Kim et al, 2001 , and Cu 2+ ions. This study, being the first to study XI among Anoxybacillus XIs, is also academically important because it can be a guide for XI enzyme studies with other bacteria.…”

Section: Discussionmentioning

confidence: 99%

Characterization of a novel xylose isomerase from Anoxybacillus gonensis G2T

Yanmis¹,

Karaoglu²,

Çolak³

et al. 2014

Turk J Biol

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IntroductionXylose isomerase (XI) (D-xylose ketol-isomerase E.C 5.3.1.5) catalyzes the isomerization of D-xylose into xylulose as the first step of xylose metabolism in many microorganisms (Wovcha et al., 1983). It is also responsible for catalyzing the isomerization of glucose to fructose in vitro, and is an important enzyme in the food industry, used in the production of high fructose corn syrup. This is the reason why XI is also known as glucose isomerase (Jensen and Rugh, 1987;De Raadt et al., 1994). The fact that the enzyme isomerizes xylose to xylulose means that it could be used industrially for producing ethanol from hemicellulose (Wang et al., 1980;Ertunga et al., 2007;Karaoglu et al., 2013). Xylose, one of the major fermentable sugars in nature, is, after glucose, the second most abundant sugar in lignocellulosic biomass. Efficient fermentation of xylose is a necessary step in developing economically viable processes for producing biofuels, such as ethanol, from biomass (Zeikus, 1996;Schenck, 2000). For this reason, many XI genes appropriate for industrial applications were transferred to Saccharomyces cerevisiae

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Section: Discussionmentioning

confidence: 99%

Characterization of a novel xylose isomerase from Anoxybacillus gonensis G2T

Yanmis¹,

Karaoglu²,

Çolak³

et al. 2014

Turk J Biol

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“…First, sporulation is generally one of the important features for certain gram-positive and rodshaped bacteria (Kim et al 2001;Sokolova et al 2001). There are, surprisingly, 23 CDS, which are related to sporulation, in the T. tengcongensis genome.…”

Section: Cell Structurementioning

confidence: 99%

A Complete Sequence of the T. tengcongensis Genome

Bao¹,

Tian²,

Li³

et al. 2002

Genome Res.

217

148

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Thermoanaerobacter tengcongensis is a rod-shaped, gram-negative, anaerobic eubacterium that was isolated from a freshwater hot spring in Tengchong, China. Using a whole-genome-shotgun method, we sequenced its 2,689,445-bp genome from an isolate, MB4T (Genbank accession no. AE008691). The genome encodes 2588 predicted coding sequences (CDS). Among them, 1764 (68.2%) are classified according to homology to other documented proteins, and the rest, 824 CDS (31.8%), are functionally unknown. One of the interesting features of the T. tengcongensis genome is that 86.7% of its genes are encoded on the leading strand of DNA replication. Based on protein sequence similarity, the T. tengcongensis genome is most similar to that of Bacillus halodurans, a mesophilic eubacterium, among all fully sequenced prokaryotic genomes up to date. Computational analysis on genes involved in basic metabolic pathways supports the experimental discovery that T. tengcongensis metabolizes sugars as principal energy and carbon source and utilizes thiosulfate and element sulfur, but not sulfate, as electron acceptors. T. tengcongensis, as a gram-negative rod by empirical definitions (such as staining), shares many genes that are characteristics of gram-positive bacteria whereas it is missing molecular components unique to gram-negative bacteria. A strong correlation between the G + C content of tDNA and rDNA genes and the optimal growth temperature is found among the sequenced thermophiles. It is concluded that thermophiles are a biologically and phylogenetically divergent group of prokaryotes that have converged to sustain extreme environmental conditions over evolutionary timescale

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“…Due to high DNA homologies (values close to or higher than 70 %) and high 16S rRNA gene sequence similarities, T. subterraneus, T. tengcongensis, T. yonseiensis, Carboxydibrachium pacificum, strain OCA1 and strain SL9 should belong to the same species (Wayne et al, 1987). According to Rule 24a (note 3) of the Bacteriological Code (Lapage et al, 1992), Carboxydibrachium pacificum (Sokolova et al, 2001), T. yonseiensis (Kim et al, 2001) and T. tengcongensis (Xue et al, 2001) should be considered as later heterotypic synonyms of T. subterraneus (Fardeau et al, 2000), which has the benefit of anteriority over all these microorganisms. This automatically invalidates the name of the genus Carboxydibrachium.…”

mentioning

confidence: 99%

Isolation from oil reservoirs of novel thermophilic anaerobes phylogenetically related to Thermoanaerobacter subterraneus: reassignment of T. subterraneus, Thermoanaerobacter yonseiensis, Thermoanaerobacter tengcongensis and Carboxydibrachium pacificum to Caldanaerobacter subterraneus gen. nov., sp. nov., comb. nov. as four novel subspecies

Fardeau

Salinas

L’Haridon

et al. 2004

International Journal of Systematic and Evolutionary Microbiology

138

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Novel thermophilic, anaerobic, Gram-positive, rod-shaped bacteria, strains SL9 and OCA1, were isolated from oilfields in France and Australia, respectively. Both strains, together with Thermoanaerobacter yonseiensis KB-1T (=DSM 13777T), Thermoanaerobacter tengcongensis MB4T (=DSM 15242T) and Carboxydibrachium pacificum JMT (=DSM 12653T), possessed genomic (DNA–DNA hybridization studies) and phylogenetic similarities with Thermoanaerobacter subterraneus SEBR 7858T (=DSM 13054T), which was isolated recently from an oilfield reservoir in south-west France. Marked phenotypic differences exist between the three oilfield isolates (T. subterraneus, strain OCA1 and strain SL9): they include temperature range for growth and substrates used. Differences were also observed in the DNA G+C contents of all organisms. Similarly to T. subterraneus, strains SL9 and OCA1, and also T. yonseiensis, T. tengcongensis and Carboxydibrachium pacificum, produced acetate and l-alanine as major end products of glucose metabolism [0·8–1·0 mol l-alanine produced (mol glucose consumed)−1] and reduced thiosulfate, but not sulfate, to sulfide. Because of these significant metabolic and phylogenetic differences between the oilfield isolates (T. subterraneus, strain OCA1 and strain SL9), T. yonseiensis, T. tengcongensis and Carboxydibrachium pacificum and other Thermoanaerobacter species, it is proposed to reassign them as a novel genus and species, Caldanaerobacter subterraneus gen. nov., sp. nov., comb. nov., with the creation of four novel subspecies, Caldanaerobacter subterraneus subsp. subterraneus subsp. nov., comb. nov., Caldanaerobacter subterraneus subsp. yonseiensis subsp. nov., comb. nov., Caldanaerobacter subterraneus subsp. tengcongensis subsp. nov., comb. nov. and Caldanaerobacter subterraneus subsp. pacificus subsp. nov., comb. nov.

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Thermoanaerobacter yonseiensis sp. nov., a novel extremely thermophilic, xylose-utilizing bacterium that grows at up to 85 degrees C.

Abstract: Thermoanaerobacter yonseiensis sp. nov., a novel extremely thermophilic, xylose-utilizing bacterium that grows at up to 85 SC

Cited by 47 publications

References 43 publications

Characterization of a novel xylose isomerase from Anoxybacillus gonensis G2T

Characterization of a novel xylose isomerase from Anoxybacillus gonensis G2T

A Complete Sequence of the T. tengcongensis Genome

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