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The Info List - Dictyoglomi


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DICTYOGLOMUS is a genus of bacterium , given its own phylum, called the Dictyoglomi. This organism is extremely thermophilic , meaning it thrives at extremely high temperatures. It is chemoorganotrophic, meaning it derives energy by metabolizing organic molecules. This organism is of interest because it elaborates an enzyme, xylanase , which digests xylan, a heteropolymer of the pentose sugar xylose . By pretreating wood pulp with this enzyme, paper manufacturers can achieve comparable levels of whiteness with much less chlorine bleach.

It has been described as Gram-negative , with a triple-layered wall.

REFERENCES

* ^ J.P. Euzéby. "Dictyoglomi". List of Prokaryotic names with Standing in Nomenclature. Archived from the original on 2011-06-13. Retrieved 2011-06-05. * ^ See the NCBI webpage on Dictyglomi. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information . Retrieved 2011-06-05. * ^ Morris DD, Gibbs MD, Chin CW, et al. (May 1998). "Cloning of the xynB gene from Dictyoglomus thermophilum Rt46B.1 and action of the gene product on kraft pulp". Appl. Environ. Microbiol. 64 (5): 1759–65. PMC 106227  . PMID 9572948 . * ^ Kristjansson, Jakob K. (1992). Thermophilic bacteria. Boca Raton: CRC Press. p. 133. ISBN 0-8493-5239-8 .

FURTHER READING

* Li, He; Kankaanpää, Anna; Xiong, Hairong; Hummel, Michael; Sixta, Herbert; Ojamo, Heikki; Turunen, Ossi (December 2013). "Thermostabilization of extremophilic Dictyoglomus thermophilum GH11 xylanase by an N-terminal disulfide bridge and the effect of ionic liquid OAc on the enzymatic performance". Enzyme and Microbial Technology. 53 (6-7): 414–419. doi :10.1016/j.enzmictec.2013.09.004 . * Zhang, Wei; Lou, Kai; Li, Guan (2010). "Expression and Characterization of the Dictyoglomus thermophilum Rt46B.1 Xylanase Gene (xynB) in Bacillus subtilis". Applied Biochemistry and Biotechnology. 160 (5): 1484–1495. doi :10.1007/s12010-009-8634-8 .

* v * t * e

Prokaryotes : Bacteria
Bacteria
classification (phyla and orders )

*

Domain Archaea Bacteria
Bacteria
Eukaryota (Supergroup Plant Hacrobia Heterokont Alveolata Rhizaria Excavata Amoebozoa Opisthokonta Animal Fungi )

G- / OM

Terra-/ Glidobacteria (BV1 )

EOBACTERIA

* Deinococcus-Thermus

* Deinococcales * Thermales

* Chloroflexi

* Anaerolineales * Caldilineales * Chloroflexales * Herpetosiphonales * Dehalococcoidales * Ktedonobacterales * Thermogemmatisporales * Thermomicrobiales * Sphaerobacterales

OTHER GLIDOBACTERIA

* Thermodesulfobacteria

* thermophiles

* Aquificae * Thermotogae

* Cyanobacteria

Proteobacteria (BV2 )

ALPHA

* Caulobacterales * Kiloniellales * Kordiimonadales * Magnetococcales * Parvularculales * Rhizobiales * Rhodobacterales * Rhodospirillales * Rickettsiales * Sneathiellales * Sphingomonadales

BETA

* Burkholderiales * Hydrogenophilales * Methylophilales * Neisseriales
Neisseriales
* Nitrosomonadales
Nitrosomonadales
* Procabacteriales * Rhodocyclales

GAMMA

* Acidithiobacillales * Aeromonadales
Aeromonadales
* Alteromonadales * Cardiobacteriales * Chromatiales * Enterobacteriales * Legionellales
Legionellales
* Methylococcales
Methylococcales
* Oceanospirillales
Oceanospirillales
* Orbales * Pasteurellales * Pseudomonadales
Pseudomonadales
* Salinisphaerales * Thiotrichales * Vibrionales
Vibrionales
* Xanthomonadales

DELTA

* Bdellovibrionales * Desulfarculales * Desulfobacterales * Desulfovibrionales * Desulfurellales * Desulfuromonadales * Myxococcales * Syntrophobacterales * Syntrophorhabdales

EPSILON

* Campylobacterales
Campylobacterales
* Nautiliales

ZETA

* Mariprofundales

BV4

SPIROCHAETES

* Spirochaetes

Sphingobacteria ( FCB group )

* Fibrobacteres

* Chlorobi

* Chlorobiales * Ignavibacteriales

* Bacteroidetes

* Bacteroidales * Cytophagales * Flavobacteriales * Sphingobacteriales

Planctobacteria
Planctobacteria
/ ( PVC group )

* Chlamydiae

* Lentisphaerae

* Lentisphaerales * Oligosphaerales * Victivallales

* Planctomycetes

* Phycisphaerales * Planctomycetales

* Verrucomicrobia

* Puniceicoccales * Opitutales * Chthoniobacterales * Verrucomicrobiales

* " Poribacteria "

OTHER GN

* Acidobacteria

* Acidobacteriales * Acanthopleuribacterales * Holophagales * Solibacterales

* Armatimonadetes

* Armatimonadales * Chthonomonadales * Fimbriimonadales

* Caldiserica * Chrysiogenetes * Deferribacteres * Dictyoglomi * Elusimicrobia * Fusobacteria * Gemmatimonadetes * Nitrospirae * Synergistetes

G+ / no OM

Firmicutes (BV3 )

BACILLI

* Bacillales * Lactobacillales

CLOSTRIDIA

* Clostridiales * Halanaerobiales * Thermoanaerobacterales * Natranaerobiales

ERYSIPELOTRICHI

* Erysipelotrichiales

THERMOLITHOBACTERIA

* Thermolithobacterales

Tenericutes / Mollicutes

* Mycoplasmatales * Entomoplasmatales * Anaeroplasmatales * Acholeplasmatales * Haloplasmatales

NEGATIVICUTES

* Selenomonadales