Complete Genome Sequence of the Hyperthermophilic, Piezophilic, Heterotrophic, and Carboxydotrophic Archaeon Thermococcus barophilus MP
- P. Vannier, V. Marteinsson, Ó. Fridjónsson, P. Oger, M. Jebbar
- Biology, EngineeringJournal of Bacteriology
- 7 January 2011
The complete genome sequence of strain MP, the type strain of T. barophilus, is reported, revealing a close proximity with Thermococcus sibiricus, another TherMococcus isolated from the deep biosphere and a possible connection to life in the depths.
Cloning of the Gene Encoding a Novel Thermostable α-Galactosidase from Thermus brockianus ITI360
- Ó. Fridjónsson, H. Watzlawick, A. Gehweiler, T. Rohrhirsch, R. Mattes
- BiologyApplied and Environmental Microbiology
- 1 September 1999
An α-galactosidase gene from Thermus brockianusITI360 was cloned, sequenced, and expressed in Escherichia coli, and the recombinant protein was purified and displayed high affinity for oligomeric substrates.
Two new thermostable α-l-rhamnosidases from a novel thermophilic bacterium
- Hákon Birgisson, G. Hreggvidsson, Ó. Fridjónsson, A. Mort, J. Kristjánsson, B. Mattiasson
- Biology, Engineering
- 4 May 2004
Isolation and characterization of a thermostable RNA ligase 1 from a Thermus scotoductus bacteriophage TS2126 with good single-stranded DNA ligation properties
- T. Blondal, Audur Thorisdottir, J. Kristjánsson
- Biology, ChemistryNucleic Acids Research
- 7 January 2005
The genome of a novel thermophilic bacteriophage designated as TS2126 that infects the thermophobic eubacterium Thermus scotoductus is sequenced and one of the annotated open reading frames shows homology to T4 RNA ligase 1, an enzyme of great importance in molecular biology, owing to its ability to ligate single-stranded nucleic acids.
Renibacterium salmoninarum, the causative agent of bacterial kidney disease in salmonid fish, detected by nested reverse transcription-PCR of 16S rRNA sequences
- H. Magnússon, Ó. Fridjónsson, Ó. Andrésson, E. Benediktsdóttir, S. Gudmundsdóttir, V. Andrésdóttir
- BiologyApplied and Environmental Microbiology
- 1 December 1994
An assay based on reverse transcription and nested PCR amplification of hypervariable regions within the 16S rRNA sequence was used to specifically detect Renibacterium salmoninarum, the slowly…
Novel Highly Thermostable Endolysin from Thermus scotoductus MAT2119 Bacteriophage Ph2119 with Amino Acid Sequence Similarity to Eukaryotic Peptidoglycan Recognition Proteins
- M. Plotka, A. Kaczorowska, T. Kaczorowski
- BiologyApplied and Environmental Microbiology
- 22 November 2013
Ph2119 endolysin was found to be highly thermostable: it retains approximately 87% of its lytic activity after 6 h of incubation at 95°C and is also active in the presence of up to 500 mM NaCl.
Two novel cyclodextrin-degrading enzymes isolated from thermophilic bacteria have similar domain structures but differ in oligomeric state and activity profile.
- Pernilla Turner, A. Labes, E. Karlsson
- BiologyJournal of Bioscience and Bioengineering
- 1 October 2005
It was shown that the enzyme displaying the highest activity on cyclodextrin was dimeric (AfCda13) and a fraction of the dimeric enzyme could be converted to a monomeric state in the presence of KCl and this fraction retained only 23% of its activity on alpha-cyclodextrine while its activity was not significantly affected, indicating that the oligomersic state is an important factor for a high activity on cycling substrates.
Quorum sensing in Aeromonas salmonicida subsp. achromogenes and the effect of the autoinducer synthase AsaI on bacterial virulence.
- J. Schwenteit, L. Gram, B. Gudmundsdóttir
- BiologyVeterinary Microbiology
- 27 January 2011
Novel Members of Glycoside Hydrolase Family 13 Derived from Environmental DNA
- A. Labes, E. Karlsson, P. Schönheit
- BiologyApplied and Environmental Microbiology
- 25 January 2008
A consensus primer-based approach using DNA from enrichments from geothermal habitats succeeded in isolating three new enzymes, including a neopullulanase and two cyclodextrinases that exhibited stability under thermophilic conditions and showed features appropriate for biotechnological applications.
Use of low nutrient enrichments to access novel amylase genes in silent diversity of thermophiles
- Cédric F. V. Hobel, V. Marteinsson, J. Kristjánsson
- Biology
- 1 November 2004
The results suggest that the enrichment method combined with sequence-based screening is an efficient way to access the silent, i.e. not detectable, gene diversity in natural environments.
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