O
Olafur H. Fridjonsson
Researcher at University of Iceland
Publications - 54
Citations - 893
Olafur H. Fridjonsson is an academic researcher from University of Iceland. The author has contributed to research in topics: Gene & Bacteriophage. The author has an hindex of 15, co-authored 53 publications receiving 784 citations.
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Journal ArticleDOI
Isolation and characterization of a thermostable RNA ligase 1 from a Thermus scotoductus bacteriophage TS2126 with good single-stranded DNA ligation properties
Thorarinn Blondal,Audur Thorisdottir,Unnur Unnsteinsdottir,Sigridur Hjorleifsdottir,Arnthor Aevarsson,Sveinn Ernstsson,Olafur H. Fridjonsson,Sigurlaug Skirnisdottir,Jon Oskar Wheat,Anna Gudny Hermannsdottir,Snorri Th. Sigurdsson,Gudmundur O. Hreggvidsson,Albert Vernon Smith,Jakob K. Kristjansson +13 more
TL;DR: 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.
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Complete Genome Sequence of the Hyperthermophilic, Piezophilic, Heterotrophic, and Carboxydotrophic Archaeon Thermococcus barophilus MP
Pauline Vannier,Viggo Marteinsson,Olafur H. Fridjonsson,Philippe Oger,Philippe Oger,Philippe Oger,Mohamed Jebbar +6 more
TL;DR: 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.
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Two new thermostable α-l-rhamnosidases from a novel thermophilic bacterium
Hákon Birgisson,Gudmundur O. Hreggvidsson,Olafur H. Fridjonsson,Andrew J. Mort,Jakob K. Kristjansson,Bo Mattiasson +5 more
TL;DR: Two new thermostable alpha-L-rhamnosidases with novel substrate hydrolysis pattern were cloned and expressed from a new thermophilic bacterium and their enzymes produced and purified.
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The sequence of the single 16S rRNA gene of the thermophilic eubacterium Rhodothermus marinus reveals a distant relationship to the group containing Flexibacter, Bacteroides, and Cytophaga species.
TL;DR: Isolation, sequencing, and analyses of a 16S rRNA gene have shown that R. marinus diverges sharply from major bacterial phyla and is most closely allied to the Flexibacter-Cytophaga-Bacteroides group.
Journal ArticleDOI
Renibacterium salmoninarum, the causative agent of bacterial kidney disease in salmonid fish, detected by nested reverse transcription-PCR of 16S rRNA sequences.
H. B. Magnússon,Olafur H. Fridjonsson,Ólafur S. Andrésson,E. Benediktsdóttir,Sigridur Gudmundsdottir,Valgerdur Andrésdóttir +5 more
TL;DR: 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 growing causative agent of bacterial kidney disease in salmonid fish.