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Forsíða

Forsíða

Guðmundur Óli Hreggviðsson - Professor

Guðmundur Óli Hreggviðsson

–

School of Engineering and Natural Sciences

Guðmundur Óli Hreggviðsson

Professor

Microbial ecology and biotechnology

Location
Askja / N-342
Phone
4225047
Email
gudmundo [at] hi.is

Unit
Faculty of Life and Environmental Sciences
Website
http://www.matis.is

Published works

2021

A genome-scale metabolic reconstruction provides insight into the metabolism of the thermophilic bacterium Rhodothermus marinus

2018

SeaBioTech: From Seabed to Test-Bed: Harvesting the Potential of Marine Biodiversity for Industrial BiotechnologyGrand Challenges in Marine Biotechnology
Palmaria palmata as an alternative protein source: enzymatic protein extraction, amino acid composition, and nitrogen-to-protein conversion factorJournal of Applied Phycology
Characterization of carotenoids in Rhodothermus marinusMicrobiologyOpen

2017

Evaluation of the production of exopolysaccharides by two strains of the thermophilic bacterium Rhodothermus marinusCarbohydrate Polymers
MEGGASENSE - the Metagenome/Genome Annotated Sequence Natural Language Search Engine: a Platform for the Construction of Sequence Data WarehousesFood Technology and Biotechnology
Divergence of species in the geothermal environmentAdaption of Microbial Life to Environmental Extremes: Novel Research Results and Application, Second Edition
Divergence of Species in the Geothermal EnvironmentAdaption of Microbial Life to Environmental Extremes
Large-scale production of a thermostable Rhodothermus marinus cellulase by heterologous secretion from Streptomyces lividansMicrobial Cell Factories
Bioactive effect of sulphated polysaccharides derived from orange-footed sea cucumber (Cucumaria frondosa) toward THP-1 macrophagesBioactive Carbohydrates and Dietary Fibre
Biorefinery approach to the use of macroalgae as feedstock for biofuelsAlgal Biofuels
Chapter 4: Biorefinery Approach to the Use of Macroalgae as Feedstock for BiofuelsAlgal Biofuels
MEGGASENSE - The metagenome/genome annotated sequence natural language search engine: A platform for the construction of sequence data warehousesFood Technology and Biotechnology

2016

Origin of Atlantic salmon (Salmo salar) at sea in Icelandic watersICES Journal of Marine Science
Using molecular networking for microbial secondary metabolite bioprospectingMetabolites
Modification of linear (β1→3)-linked glucooligosaccharides with a novel recombinant β-glucosyltransferase (trans-β-glucosidase) enzyme from Bradyrhizobium diazoefficiensGlycobiology
Quantifying mixing, boiling, degassing, oxidation and reactivity of thermal waters at Vonarskard, IcelandJournal of Volcanology and Geothermal Research

2015

Complete genome sequence of Streptomyces lividans TK24Journal of Biotechnology
A CGTase with high coupling activity using γ-cyclodextrin isolated from a novel strain clustering under the genus CarboxydocellaGlycobiology
Biochemical characterization and validation of a catalytic site of a highly thermostable Ts2631 endolysin from the Thermus scotoductus phage vB-Tsc2631PLoS ONE
Chondroitin Lyase from a Marine Arthrobacter sp. MAT3885 for the Production of Chondroitin Sulfate DisaccharidesMarine Biotechnology

2014

Isothermal DNA Amplification by a Novel and Non-Ubiquitous Thermus Polymerase ACurrent Biotechnology
Isolation, growth and genome of the Rhodothermus RM378 thermophilic bacteriophageExtremophiles
Discovery and characterization of RecA protein of thermophilic bacterium Thermus thermophilus MAT72 phage Tt72 that increases specificity of a PCR-based DNA amplificationJournal of Biotechnology
Present-day genetic structure of Atlantic salmon (Salmo salar) in Icelandic rivers and ice-cap retreat modelsPLoS ONE
Novel highly thermostable endolysin from Thermus scotoductus MAT2119 bacteriophage Ph2119 with amino acid sequence similarity to eukaryotic peptidoglycan recognition proteinsApplied and Environmental Microbiology

2013

Browsing metagenomes for novel starch and carbohydrate industry enzymes—AMYLOMICS case studyCurrent Opinion in Biotechnology
Novel Highly Thermostable Endolysin from Thermus scotoductus MAT2119 Bacteriophage Ph2119 with Amino Acid Sequence Similarity to Eukaryotic Peptidoglycan Recognition ProteinsApplied and Environmental Microbiology
Sulphated polysaccharide from the sea cucumber Cucumaria frondosa affect maturation of human dendritic cells and their activation of allogeneic CD4(+) T cells in vitroBioactive Carbohydrates and Dietary Fibre
Improved soluble expression of the gene encoding amylolytic enzyme Amo45 by fusion with the mobile-loop-region of co-chaperonin GroES in Escherichia coliBiocatalysis and Biotransformation
Litorilinea aerophila gen. nov., sp. nov., an aerobic member of the class Caldilineae, phylum Chloroflexi, isolated from an intertidal hot springInternational Journal of Systematic and Evolutionary Microbiology

2012

Microbial speciation in the geothermal ecosystemAdaption of Microbial Life to Environmental Extremes: Novel Research Results and Application
Bacterial succession during curing process of a skate (Dipturus batis) and isolation of novel strainsJournal of Applied Microbiology
Microbial speciation in the geothermal ecosystemAdaption of Microbial Life to Environmental Extremes

2011

A retrospective approach to fractionize variation in body mass of Atlantic cod Gadus morhuaJournal of Fish Biology
A pilot genetic study reveals the absence of spatial genetic structure in Norway lobster (Nephrops norvegicus) on fishing grounds in Icelandic watersICES Journal of Marine Science
Generation of Targeted Deletions in the Genome of Rhodothermus marinusApplied and Environmental Microbiology
Exploring novel non-Leloir β-glucosyltransferases from proteobacteria for modifying linear (β1→3)-linked gluco-oligosaccharide chainsGlycobiology
Generation of targeted deletions in the genome of Rhodothermus marinusApplied and Environmental Microbiology
Erratum: Exploring novel non-Leloir β-glucosyltransferases from proteobacteria for modifying linear (β1→3)-linked gluco- oligosaccharide chains (Glycobiology (2011) 21:3 (304-328) DOI: 10.1093/glycob/cwq165)Glycobiology

2010

Identifying fishes through DNA barcodes and microarraysPLoS ONE
Novel set of multiplex assays (SalPrint15) for efficient analysis of 15 microsatellite loci of contemporary samples of the Atlantic salmon (Salmo salar)Molecular Ecology Resources
Enzyme-enhanced extraction of antioxidant ingredients from red algae Palmaria palmataLWT - Food Science and Technology
Structure at 1.0 Å resolution of a high-potential iron-sulfur protein involved in the aerobic respiratory chain of Rhodothermus marinusJournal of Biological Inorganic Chemistry
Permanent genetic resources added to the molecular ecology resources database 1 February 2010-31 March 2010Molecular Ecology Resources

2009

Analysis of the unique geothermal microbial ecosystem of the Blue LagoonFEMS Microbiology Ecology
Thermus islandicus sp. nov., a mixotrophic sulfur-oxidizing bacterium isolated from the Torfajokull geothermal areaInternational Journal of Systematic and Evolutionary Microbiology
Bacterial composition and succession during storage of North-Atlantic cod (Gadus morhua) at superchilled temperaturesBMC Microbiology
Characterisation of an extracellular vibriolysin of the fish pathogen Moritella viscosaVeterinary Microbiology

2008

DNA microarrays for identifying fishesMarine Biotechnology
Characterization of 18 new microsatellite loci in Atlantic cod (Gadus morhua L.)Molecular Ecology Resources
A novel type of monoheme cytochrome c: Biochemical and structural characterization at 1.23 Å resolution of Rhodothermus marinus cytochrome cBiochemistry
Cytochrome c from rhodothermus marinus
Rapid quantitative monitoring method for the fish spoilage bacteria PseudomonasJournal of Environmental Monitoring

2007

A highly thermostable trehalase from the thermophilic bacterium Rhodothermus marinusExtremophiles
The "Fish & Chips" project: Microarrays as a tool for the identification of marine organisms in biodiversity and ecosystem researchOCEANS 2007 - Europe
The alternative complex III from Rhodothermus marinus - A prototype of a new family of quinol:electron acceptor oxidoreductasesFEBS Letters
Immobilization of a recombinant Escherichia coli producing a thermostable α-l-rhamnosidase: Creation of a bioreactor for hydrolyses of naringinEnzyme and Microbial Technology
The "fish & chips" project: Microarrays as a tool for the identification of marine organisms in biodiversity and ecosystem researchOCEANS 2007 - Europe
A ba3oxygen reductase from the thermohalophilic bacterium Rhodothermus marinusFEMS Microbiology Letters

2006

Nine new polymorphic microsatellite loci for the amplification of archived otolith DNA of Atlantic cod, Gadus morhua L.Molecular Ecology Notes
Polyphasic analysis of Thermus isolates from geothermal areas in IcelandExtremophiles
Rhodothermus marinus: Physiology and molecular biologyExtremophiles

2005

Investigation of the microbial ecology of intertidal hot springs by using diversity analysis of 16S rRNA and chitinase genesApplied and Environmental Microbiology
Characterization of a 5′-polynucleotide kinase/3′-phosphatase from bacteriophage RM378Journal of Biological Chemistry
Isolation and characterization of a thermostable RNA ligase 1 from a Thermus scotoductus bacteriophage TS2126 with good single-stranded DNA ligation propertiesNucleic Acids Research
Cloning, expression, and characterization of a highly thermostable family 18 chitinase from Rhodothermus marinusExtremophiles
Investigation of the Microbial Ecology of Intertidal Hot Springs by Using Diversity Analysis of 16S rRNA and Chitinase GenesApplied and Environmental Microbiology
A nhaD Na⁺/H⁺ antiporter and a pcd homologues are among the Rhodothermus marinus complex I genesBiochimica et Biophysica Acta - Bioenergetics

2004

The modular xylanase Xyn10A from Rhodothermus marinus is cell-attached, and its C-terminal domain has several putative homologues among cell-attached proteins within the phylum BacteroidetesFEMS Microbiology Letters
Two new thermostable α-L-rhamnosidases from a novel thermophilic bacteriumEnzyme and Microbial Technology
Use of low nutrient enrichments to access novel amylase genes in silent diversity of thermophilesWorld Journal of Microbiology and Biotechnology
A new thermostable α-l-arabinofuranosidase from a novel thermophilic bacteriumBiotechnology Letters
A new thermostable α-L-arabinofuranosidase from a novel thermophilic bacteriumBiotechnology Letters

2003

Discovery and characterization of a thermostable bacteriophage RNA ligase homologous to T4 RNA ligase 1Nucleic Acids Research
The modular organisation and stability of a thermostable family 10 xylanaseBiocatalysis and Biotransformation
Endoglucanase cel12A from Rhodothermus marinus

2002

The structure of Rhodothermus marinus Cel12A, a highly thermostable family 12 endoglucanase, at 1.8 Å resolutionJournal of Molecular Biology
The Structure of Rhodothermus marinus Cel12A, A Highly Thermostable Family 12 Endoglucanase, at 1.8Å ResolutionJournal of Molecular Biology

2001

A new ecological adaptation to high sulfide by a Hydrogenobacter sp. growing on sulfur compounds but not on hydrogenMicrobiological Research
Deletion of a cytotoxic, N-terminal putative signal peptide results in a significant increase in production yields in Escherichia coli and improved specific activity of Cel12A from Rhodothermus marinusApplied Microbiology and Biotechnology
Characterization of alanine and malate dehydrogenases from a marine psychrophile strain PA-43Extremophiles
Phylogenetic Diversity Analysis of Subterranean Hot Springs in IcelandApplied and Environmental Microbiology
Species composition of cultivated and noncultivated bacteria from short filaments in an icelandic hot spring at 88°CMicrobial Ecology
Phylogenetic Diversity Analysis of Subterranean Hot Springs in IcelandApplied and Environmental Microbiology
Isolation and characterization of a mixotrophic sulfur-oxidizing Thermus scotoductusExtremophiles

2000

Taxonomy of ExtremophilesApplied Microbial Systematics
Genetic diversity analysis of Rhodothermus reflects geographical origin of the isolatesExtremophiles
Influence of Sulfide and Temperature on Species Composition and Community Structure of Hot Spring Microbial MatsApplied and Environmental Microbiology
Influence of sulfide and temperature on species composition and community structure of hot spring microbial matsApplied and Environmental Microbiology

1998

F- and V-ATPases in the Genus Thermus and Related SpeciesSystematic and Applied Microbiology
F- and V-ATPases in the genus Thermus and related speciesSystematic and Applied Microbiology
Cloning, sequencing and overexpression of a Rhodothermus marinus gene encoding a thermostable cellulase of glycosyl hydrolase family 12Applied Microbiology and Biotechnology

1997

Continuous cultivation of Hydrogenobacter thermophilus at low partial pressures of H2Biotechnology Techniques

1996

An extremely thermostable cellulase from the thermophilic eubacterium Rhodothermus marinusApplied and Environmental Microbiology

1995

Large scale cultivation of Hydrogenobacter thermophilus on hydrogenLetters in Applied Microbiology
Large scale cultivation of Hydrogenobacter thermophilus on hydrogenLetters in Applied Microbiology
Ecology and habitats of extremophilesWorld Journal of Microbiology & Biotechnology

1994

Cloning and Sequencing of a Rhodothermus marinus Gene, bglA, Coding for a Thermostable β‐Glucanase and its Expression in Escherichia coliEuropean Journal of Biochemistry

1991

Two structurally different cytochromes c from Bacillus azotoformans: on the evolution of Gram-positive bacteriaBiochimica et Biophysica Acta (BBA) - Bioenergetics
Two structurally different cytochromes c from Bacillus azotoformans: on the evolution of Gram-positive bacteriaBBA - Bioenergetics

1986

Isolation of halotolerant Thermus spp. from submarine hot springs in IcelandApplied and Environmental Microbiology

Keywords for Specialisation:

Microbial ecology

Thermophlic bacteria

Thermophilic enzymes