Projects and publications
- Otto Ludvig Nyquist, Anette McLeod, Dag Anders Brede, Lars-Gustav Snipen, Ågot Aakra, Ingolf Nes, (2011). Comparative genomics of Lactobacillus sakei with emphasis on strains from meat. Molecular Genetics and Genomics s. 297-311. doi: 10.1007/s00438-011-0608-1
- Ågot Aakra, Heidi Vebø, Ulf Indahl, Lars-Gustav Snipen, Øystein Gjerstad, Merete Lunde, Ingolf Nes, (2010). The response of Enterococcus faecalis V583 to chloramphenicol treatment. International Journal of Microbiology doi: 10.1155/2010/483048
- Øystein Gjerstad, Ågot Aakra, Lars Snipen, Ulf Indahl, (2009). Probabilistically assisted spot segmentation - With application to DNA microarray images. Chemometrics and Intelligent Laboratory Systems s. 1-9. doi: 10.1016/j.chemolab.2009.04.003
- Øystein Gjerstad, Ågot Aakra, Ulf Indahl, (2009). Modelling and quality assessment of spots in digital images - With application to DNA microarrays. Chemometrics and Intelligent Laboratory Systems s. 10-23. doi: 10.1016/j.chemolab.2009.04.004
- Lars Snipen, Otto Ludvig Nyquist, Margrete Solheim, Ågot Aakra, Ingolf Nes, (2009). Improved analysis of bacterial CGH data beyond the log-ratio paradigm. BMC Bioinformatics doi: 10.1186/1471-2105-10-91
- Margrete Solheim, Ågot Aakra, Lars Snipen, Dag Anders Brede, Ingolf Nes, (2009). Comparative genomics of Enterococcus faecalis from healthy Norwegian infants. BMC Genomics doi: 10.1186/1471-2164-10-194
- Ågot Aakra, Otto Ludvig Nyqvist, Lars Snipen, Turid Synnøve Reiersen, Ingolf F. Nes, (2007). Survey of genomic diversity among Enterococcus faecalis strains by microarray-based comparative genomic hybridization. Applied and Environmental Microbiology s. 2207-2217. doi: 10.1128/AEM.01599-06
- Margrete Solheim, Ågot Aakra, Heidi Vebø, Lars Snipen, Ingolf F. Nes, (2007). Transcriptional responses of Enterococcus faecalis V583 to bovine bile and sodium dodecyl sulfate. Applied and Environmental Microbiology s. 5767-5774. doi: 10.1128/AEM.00651-07
- Guri Feten, Trygve Almøy, Lars Snipen, Ågot Aakra, Ludvig Nyquist, Are Halvor Aastveit, (2007). Mixture models as a method to find present and divergent genes in comparative genomic hybridization studies on bacteria. Biometrical Journal s. 242-258. doi: 10.1002/bimj.200510286
- Lars Snipen, Dirk Repsilber, Ludvig Nyquist, Andreas Ziegler, Ågot Aakra, Are Halvor Aastveit, (2006). Detection of divergent genes in microbial aCGH experiments. BMC Bioinformatics doi: 10.1186/1471-2105-7-181
- Raquel Criado, Dzung Bao Diep, Ågot Aakra, J. Gutierrez, Ingolf F. Nes, P.E. Hernandez, Luis Cintas, (2006). Complete sequence of the enterocin Q-encoding plasmid pCIZ2 from the multiple bacteriocin producer Enterococcus faecium L50 and genetic characterization of enterocin Q production and immunity. Applied and Environmental Microbiology s. 6653-6666. doi: 10.1128/AEM.00859-06
- Guri Feten, Trygve Almøy, Lars Snipen, Ågot Aakra, Are Halvor Aastveit, (2006). Regression as a method to predict copy numbers in comparative genomic hybridization studies on bacteria. Biometrical Journal s. 255-270. doi: 10.1002/bimj.200510208
- Ågot Aakra, Heidi Vebø, Lars Snipen, Are Halvor Aastveit, Ingolf F. Nes, (2005). Transcriptional response of Enterococcus faecalis V583 to erythromycin. Antimicrobial Agents and Chemotherapy s. 2246-2259. doi: 10.1128/AAC.49.6.2246-2259.2005
- Dzung Bao Diep, Ronny Myhre, Ola Johnsborg, Ågot Aakra, Ingolf F. Nes, (2003). Unducible bacteriocin production in Lactobacillus is regulated by differential expression of the pln operons and by two antagonizing response regulators, the activity of which is enhanced upon phosphorylation. Molecular Microbiology s. 483-494. doi: 10.1046/j.1365-2958.2003.03310.x
- Ågot Aakra, Janne Beate Utåker, Ingolf F. Nes, (2002). Corrigendum to "Comparative phylogeny of the ammonia monooxygenase subunit A and 16S rRNA genes of ammonia-oxidizing bacteria". FEMS Microbiology Letters s. 321-321. doi: 10.1111/j.1574-6968.2002.tb11151.x
- Janne Beate Utåker, Kjell Andersen, Ågot Aakra, Birgitte Moen, Ingolf F. Nes, (2002). Phylogeny and functional expression of ribulose 1,5-bisphosphate carboxylase/oxygenase from the autotrophic ammonia oxidizing bacterium Nitrosospira sp. 40KI. Journal of Bacteriology s. 468-478. doi: 10.1128/JB.184.2.468-478.2002
- Ågot Aakra, Janne Beate Utåker, Ingolf F. Nes, (2001). Comparative phylogeny of the ammonia monoozygenase subunit A and 16S rRNA genes of ammonia-oxidizing bacteria. FEMS Microbiology Letters s. 237-242. doi: 10.1016/S0378-1097(01)00468-2
- Bishal K. Sitaula, J.I.B. Sitaula, Ågot Aakra, Lars R. Bakken, (2001). Nitrification and Methane Oxidation in forest soil: Acid deposition, nitrogen input and plant effects. Water, Air and Soil Pollution s. 1060-1066. doi: 10.1023/A:1013978212795
- Ågot Aakra, Janne Beate Utåker, Andreas Pommerening-Röser, Hans-Peter Koops, Ingolf F. Nes, (2001). Detailed phylogeny of ammonia-oxidizing bacteria determined by rDNA sequences and DNA homology values. International Journal of Systematic and Evolutionary Microbiology s. 2021-2030.
- Ågot Aakra, Martin Hesselsøe, Lars R. Bakken, (2000). Surface attachment of ammonia-oxidizing bacteria in soil. Microbial Ecology s. 222-235. doi: 10.1007/s002480000006
- Ågot Aakra, Janne B. Utåker, Ingolf F. Nes, Lars R. Bakken, (1999). An evaluated improvement of the extinction dilution method for isolation of ammonia-oxidizing bacteria. Journal of Microbiological Methods s. 23-31. doi: 10.1016/S0167-7012(99)00094-9
- Ågot Aakra, Janne Beate Utåker, Ingolf F. Nes, (1999). Diversity of soil bacteria - a new approach. ?
- Ågot Aakra, Janne Beate Utåker, Ingolf F. Nes, (1999). RFLP of rRNA genes and sequencing of the 16S-23S rDNA intergenic spacer region of ammonia-oxidizing bacteria: a phylogenetic approach. International Journal of Systematic Bacteriology s. 123-130. doi: 10.1099/00207713-49-1-123
- Ludvig Nyquist, Ågot Aakra, Dag Anders Brede, Anette McLeod, Lars Snipen, Ingolf F. Nes, (2008). Comparative genomics of lactobacillus sakei.
- Margrete Solheim, Ågot Aakra, Lars Snipen, Dag Anders Brede, Ingolf F. Nes, (2008). Comparative genomics of Enterococcus sFaecalis from healthy Norwegian babies.
- Ludvig Nyquist, Ågot Aakra, Dag Anders Brede, Anette McLeod, Lars Snipen, Ingolf F. Nes, (2008). Genomic Diversity in Lactobacillus sakei Meat Isolates.
- Margrete Solheim, Ågot Aakra, Lars Snipen, Dag Anders Brede, Ingolf F. Nes, (2008). Genetic differentiation between commensal and clinical lineages of Enterococcus faecalis?.
- Margrete Solheim, Ågot Aakra, Lars Snipen, Dag Anders Brede, Ingolf F. Nes, (2008). Genetic differentiation between commensal and clinical lineages of Enterococcus faecalis?.
- Margrete Solheim, Ågot Aakra, Dag Anders Brede, Lars Snipen, Ingolf F. Nes, (2008). Comparative genomics of enterococcus faecalis from healthy Norwegian babies.
- Margrete Solheim, Heidi Vebø, Ågot Aakra, Ingolf F. Nes, (2006). Growth and transcription studies of enterococcus faezalis V583 treated with SDS and bile.
- Ragnhild Stubberud, Ågot Aakra, Lars Snipen, (2006). Calling genes in the genome sequence of Enterococcus faecium (DO).
- Margrete Solheim, Ågot Aakra, Ingolf F. Nes, (2006). Growth and transcription studies of enterococcus faecalis V583 treated with SDS and bile.
- Thomas Mathisen, Ågot Aakra, Ingolf F. Nes, (2006). Growth and transcription studies of Enterococcus faecalis during salt and nutrient limitation.
- Otto Ludvig Nyqvist, Ågot Aakra, Ingolf F. Nes, Lars Snipen, (2005). Genomic diversity of enterococci.
- Ågot Aakra, Otto Ludvig Nyqvist, Lars Snipen, Ingolf F. Nes, (2005). Explotarion of enterococcal genomes by the use of microarrays.
- Raquel Criado, J. Gutierrez, Ågot Aakra, Dzung Bao Diep, Morten Skaugen, R. Citti, M. Martin, A. Basanta, J Sanchez, Brad Gomez, C. Herranz, Ingolf F. Nes, P.E. Hernandez, Luis Cintas, (2005). Genetic and immunological characterization of multiple bacteriocin production by enterococcus feacium L50 of food origin.
- Heidi Vebø, Ågot Aakra, Lars Snipen, Ingolf F. Nes, (2005). The transcriptional responses of Enterococcus faecalis and Enterococcus faecium to antimicrobial compounds studied by genome-wide microarrays.
- Sigurd Rysstad, Stig W. Omholt, Ågot Aakra, Brit Salbu, Knut Hove, Kjetil A. Brottveit, (2005). Ser du geita?. Forskerforum s. 15-17.
- Ågot Aakra, (2004). An introduction to microarray technology.
- Heidi Vebø, Ågot Aakra, Lars Snipen, Ingolf F. Nes, (2004). Application of genome-wide mircroarrays to study the transcriptional responses of E.faecium and E.feacalis to antimicrobial compounds.
- Turid Synnøve Reiersen, Ågot Aakra, Ingolf F. Nes, (2004). Comparative genome hybridizations to reveal genomic diversity among enterococci.
- Heidi Vebø, Ågot Aakra, Lars Snipen, Ingolf F. Nes, (2004). Application of genome-wide microarrays to study the transcriptional responses of E.faecium and E.faecalis to antimicrobial compounds.
- Ågot Aakra, Turid Synnøve Reiersen, Lars Snipen, Vivek Kapur, Gary M. Dunny, Barbara E. Murray, Xiang Qin, Ingolf F. Nes, (2004). The Use of Microarray Based Comparative Genomic Hybridization to Study Genomic Diversity in Enterococcus Faecalis and E. Faecium.
- Ågot Aakra, (2004). Microbial Genomics.
- Ågot Aakra, (2004). Comparative and functional genomics of enterococci.
- Lars Snipen, Ågot Aakra, Trygve Almøy, Guri Feten, Ingolf F. Nes, Are Halvor Aastveit, (2004). Discrimination of divergent genes in microbial comparative genome hybridisations.
- Ågot Aakra, (2003). Microarrays in microbiology.
- Ågot Aakra, Ingolf F. Nes, Barbara E. Murray, Qin Xiang, George Weinstock, Vivek Kapur, (2003). A genome-wide microarray of Enterococcus faecium and its application in studying genomic diversity within the species.
- Ågot Aakra, Ingolf F. Nes, Vivek Kapur, Barbara E. Murray, Helmut Hirt, Gary M. Dunny, (2003). Transcriptional profiling of the Enterococcus faecalis response to antimicrobioal compounds.
- Ågot Aakra, (2003). Genomics in enterococci: Application of genome-wide microarrays to study stress responses in Enterococcus faecalis and.
- Ågot Aakra, (2003). Microarrays in microbiology.
- Ågot Aakra, Vivek Kapur, Helmut Hirt, Gary M. Dunny, Barbara E. Murray, George Weinstock, Qin Xiang, Ingolf F. Nes, (2003). Functional Genomics of Enterococci.
- Ågot Aakra, (2002). Functional genomics of Enterococcus; the process of making genome-wide mictroarrays from A to Z.
- Ågot Aakra, (2002). Genomics of Enterococcus and construction of genome-wide microarrays.
- Ågot Aakra, Raquel Criado, Luis Cintas, Dzung Bao Diep, P.E. Hernandez, Ingolf F. Nes, (2002). Bacteriocins from enterococcus feacium: Genes, production, and secretion.
- Ågot Aakra, Raquel Criado, Luis Cintas, Dzung Bao Diep, R. Hernández, Ingolf F. Nes, (2002). Enterocins: Genes, production, and secretion, with focus enterocins from E.faecium.
- Ågot Aakra, M. Hesselsøe, Lars R. Bakken, (2001). Extraction and quantification of ammonia oxidizing bacteria from soil.
- Ågot Aakra, Janne B. Utåker, Ingolf F. Nes, (2001). RFLP of rRNA genes and sequencing of the 16S-23S rDNA intergenic spacer region of ammonia oxidizing bacteria: a phylogenetic approach.
- Janne Beate Utåker, Kjell Andersen, Ågot Aakra, Birgitte Moen, Ingolf F. Nes, (2001). Phylogeni and functional expression of ribulose 1,5-bisphosphate carboxylase/oxygenase from the autotrophic ammonia oxidizing bacterium Nitrosospira sp. 40 KI.
- Ågot Aakra, Janne Beate Utåker, Birgitte Moen, Ingolf F. Nes, (2001). Diversity of chemoautotropjhic ammonia-oxidizing bacteria based on phylogenetic analyses.
- Bishal K. Sitaula, J.I.B. Sitaula, Ågot Aakra, Lars R. Bakken, (2000). Nitrification and methane oxidation in forest soil: Acid deposition, nitrogen input and plant effects.
- Ågot Aakra, Janne Beate Utåker, Lars R. Bakken, Ingolf F. Nes, (2000). Genetic diversity of chrmoautotrophic ammonia oxidizing bacteria.
- Bishal K. Sitaula, Ågot Aakra, Lars R. Bakken, Ingolf F. Nes, Dag Lillehaug, (2000). Nitrification and methane oxidation in forest soil: acid deposition, nitrogen input and vegetation effects.
- Janne Beate Utåker, Kjell Andersen, Ågot Aakra, Ingolf F. Nes, (2000). Alternative techniques for the phylogenetic analysis of the autotrophic ammonia-oxidizing bacteria.
- Janne Beate Utåker, Kjell Andersen, Ågot Aakra, Ingolf F. Nes, (2000). Characterization of RuBisCO from the ammonia-oxidizing bacteria.
- Ågot Aakra, Janne Beate Utåker, Ingolf F. Nes, Lars R. Bakken, (2000). Genetic diversity of ammonia oxidizing bacteria.
- Ågot Aakra, Martin Hesselsøe, Lars R. Bakken, (2000). Extraction of ammonia oxidizing bacteria from soil.
- Janne B. Utåker, Ågot Aakra, Ingolf F. Nes, Lars R. Bakken, (1999). Alternative techniques for the phylogenetic analysis of the autotrophic ammonia oxidizing bacteria.
- Janne B. Utåker, Ågot Aakra, Lars R. Bakken, Ingolf F. Nes, (1999). Ammonia oxidizing bacteria from soil - alternative phylogenetic tools.
- Ågot Aakra, Janne B. Utåker, Ingolf F. Nes, (1999). Restriction fragment length polymorphism of rRNA genes and sequencing of the 16S-23S rDNA intergenic spacer region of ammonia oxidizing bacteria: a phylogenetiv approach.
- Ågot Aakra, Marina Azzaroli Bleken, Lars R. Bakken, (1998). N2O emission from Norwegian agriculture as estimated by the IPPC methodology.