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    • Complete genome sequence of Photobacterium ganghwense C2.2: A new polyhydroxyalkanoate production candidate 

      Lascu, Irina; Mereuță, Ioana; Chiciudean, Iulia; Hansen, Hilde; Avramescu, Sorin Marius; Tănase, Ana-Maria; Stoica, Ileana (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-01)
      Polyhydroxyalkanoates (PHAs) are biodegradable bioplastics that can be manufactured sustainably and represent a promising green alternative to petrochemical-based plastics. Here, we describe the complete genome of a new marine PHA-producing bacterium—Photobacterium ganghwense (strain C2.2), which we have isolated from the Black Sea seashore. This new isolate is psychrotolerant and accumulates PHA ...
    • Complete genome sequence of Vibrio anguillarum strain NB10, a virulent isolate from the Gulf of Bothnia 

      Holm, Kåre Olav; Nilsson, Kristina; Hjerde, Erik; Willassen, Nils Peder; Milton, Debra L (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-02)
      Vibrio anguillarum causes a fatal hemorrhagic septicemia in marine fish that leads to great economical losses in aquaculture world-wide. Vibrio anguillarum strain NB10 serotype O1 is a Gram-negative, motile, curved rod-shaped bacterium, isolated from a diseased fish on the Swedish coast of the Gulf of Bothnia, and is slightly halophilic. Strain NB10 is a virulent isolate that readily colonizes ...
    • Complete Genome Sequences of Seven Vibrio anguillarum Strains as Derived from PacBio Sequencing 

      Holm, Kåre Olav; Bækkedal, Cecilie; Johansson Söderberg, Jenny; Haugen, Peik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-07)
      We report here the complete genome sequences of seven Vibrio anguillarum strains isolated from multiple geographic locations, thus increasing the total number of genomes of finished quality to 11. The genomes were de novo assembled from long-sequence PacBio reads. Including draft genomes, a total of 44 V. anguillarum genomes are currently available in the genome databases. They represent an important ...
    • The complex structures of isocitrate dehydrogenase from Clostridium thermocellum and Desulfotalea psychrophila support a new active site locking mechanism 

      Leiros, Hanna-Kirsti S.; Fedøy, Anita-Elin; Leiros, Ingar; Steen, Ida Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-07-07)
      Isocitrate dehydrogenase (IDH) catalyzes the oxidative NAD(P)+ -dependent decarboxylation of isocitrate into a-ketoglutarate and CO2 and is present in organisms spanning the biological range of temperature. We have solved two crystal structures of the thermophilic Clostridium thermocellum IDH (CtIDH), a native open apo CtIDH to 2.35 Å and a quaternary complex of CtIDH with NADP+ , isocitrate and ...
    • Computational and experimental insights into asymmetric Rh‐catalyzed hydrocarboxylation with CO2 

      Pavlovic, Ljiljana; Pettersen, Martin; Gevorgyan, Ashot; Vaitla, Janakiram; Bayer, Annette; Hopmann, Kathrin Helen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-18)
      The asymmetric Rh‐catalyzed hydrocarboxylation of α,β‐unsaturated carbonyl compounds was originally developed by Mikami and co‐workers but gives only moderate enantiomeric excesses. In order to understand the factors controlling the enantioselectivity and to propose novel ligands for this reaction, we have used computational and experimental methods to study the Rh‐catalyzed hydrocarboxylation with ...
    • Computational and experimental insights into asymmetric Rh‐catalyzed hydrocarboxylation with CO2 

      Pavlovic, Ljiljana; Pettersen, Martin; Gevorgyan, Ashot; Vaitla, Janakiram; Bayer, Annette; Hopmann, Kathrin Helen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-18)
      The asymmetric Rh‐catalyzed hydrocarboxylation of α,β‐unsaturated carbonyl compounds was originally developed by Mikami and co‐workers but gives only moderate enantiomeric excesses. In order to understand the factors controlling the enantioselectivity and to propose novel ligands for this reaction, we have used computational and experimental methods to study the Rh‐catalyzed hydrocarboxylation with ...
    • Computational design of the temperature optimum of an enzyme reaction 

      van der Ent, Florian; Skagseth, Susann; Lund, Bjarte Aarmo; Sočan, Jaka; Griese, Julia J.; Brandsdal, Bjørn Olav; Åqvist, Johan Lennart Gösta (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-28)
      Cold-adapted enzymes are characterized both by a higher catalytic activity at low temperatures and by having their temperature optimum down-shifted, compared to mesophilic orthologs. In several cases, the optimum does not coincide with the onset of protein melting but reflects some other type of inactivation. In the psychrophilic α-amylase from an Antarctic bacterium, the inactivation is thought to ...
    • Computational Investigation on the Photophysical Properties of Halogenated Tetraphenyl BODIPY 

      Pomogaev, Vladimir; Chiodo, Sandro; Ruud, Kenneth; Kuznetsova, Rimma; Avramov, Pavel V (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-07)
      The electronic structure, transition probabilities, and corresponding quantum yields of fluorescence in a family of dihalogen-tetraphenyl-aza-BODIPY were calculated at the Time-Dependent Density Functional and post-Hartree–Fock levels of theory. Excellent agreement between theoretical and experimental spectral-luminescent data was achieved with the HSE06 functional and the 6-311G* basis set. Because ...
    • A Computational Protocol for Vibrational Circular Dichroism Spectra of Cyclic Oligopeptides 

      Eikås, Karolina Solheimslid; Beerepoot, Maarten; Ruud, Kenneth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-05)
      Cyclic peptides are a promising class of compounds for next-generation antibiotics as they may provide new ways of limiting antibiotic resistance development. Although their cyclic structure will introduce some rigidity, their conformational space is large and they usually have multiple chiral centers that give rise to a wide range of possible stereoisomers. Chiroptical spectroscopies such as ...
    • A concise SAR-analysis of antimicrobial cationic amphipathic barbiturates for an improved activity-toxicity profile 

      Langer, Manuel K; Rahman, Ataur; Dey, Hymonti; Anderssen, Trude; Zilioli, Francesco; Haug, Tor; Blencke, Hans-Matti; Stensvåg, Klara; Strøm, Morten B.; Bayer, Annette (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-05)
      An amphipathic barbiturate mimic of the marine eusynstyelamides is reported as a promising class of antimicrobial agents. We hereby report a detailed analysis of the structure-activity relationship for cationic amphipathic N,N′ -dialkylated-5,5-disubstituted barbiturates. The influence of various cationic groups, hydrocarbon linkers and lipophilic side chains on the compounds’ antimicrobial potency ...
    • A Concise Total Synthesis of Breitfussin A and B 

      Pandey, Sunil Kumar; Guttormsen, Yngve; Haug, Bengt Erik; Hedberg, Christian; Bayer, Annette (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Conformational tuning improves the stability of spirocyclic nitroxides with long paramagnetic relaxation times 

      Sowinski, Mateusz; Gahlawat, Sahil; Lund, Bjarte Aarmo; Warnke, Anna-Luisa; Hopmann, Kathrin Helen; Lovett, Janet E.; Haugland, Marius Myreng (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-05)
      Nitroxides are widely used as probes and polarization transfer agents in spectroscopy and imaging. These applications require high stability towards reducing biological environments, as well as beneficial relaxation properties. While the latter is provided by spirocyclic groups on the nitroxide scaffold, such systems are not in themselves robust under reducing conditions. In this work, we introduce ...
    • Constrained DFT-based magnetic machine-learning potentials for magnetic alloys: a case study of Fe–Al 

      Tantardini, Christian; Kotykhov, Alexey S.; Gubaev, Konstantin; Hodapp, Max; Shapeev, Alexander V.; Novikov, van S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-13)
      We propose a machine-learning interatomic potential for multi-component magnetic materials. In this potential we consider magnetic moments as degrees of freedom (features) along with atomic positions, atomic types, and lattice vectors. We create a training set with constrained DFT (cDFT) that allows us to calculate energies of confgurations with non-equilibrium (excited) magnetic moments and, ...
    • Contrasting the phospholipid profiles of two neoplastic cell lines reveal a high PC:PE ratio for SH-SY5Y cells relative to A431 cells 

      Bariås, Espen; Jakubec, Martin; Førsund, Elise; Hjørnevik, Linda Veka; Lewis, Aurelia Eva; Halskau, Øyvind (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-14)
      Lipids have been implicated in Parkinson's Disease (PD). We therefore studied the lipid profile of the neuroblastoma SH-SY5Y cell line, which is used extensively in PD research and compared it to that of the A431 epithelial cancer cell line. We have isolated whole cell extracts (WC) and plasma membrane (PM) fractions of both cell lines. The isolates were analyzed with 31P NMR. We observed a significant ...
    • Convergence of environment polarization effects in multiscale modeling of excitation energies 

      Beerepoot, Maarten; Steindal, Arnfinn Hykkerud; Ruud, Kenneth; Olsen, Jógvan Magnus Haugaard; Kongsted, Jacob (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-03-26)
      We present a systematic investigation of the influence of polarization effects from a surrounding medium on the excitation energies of a chromophore. We use a combined molecular dynamics and polarizable embedding time-dependent density functional theory (PE-TD-DFT) approach for chromophores in pro- teins and in homogeneous solvents. The mutual polarization between the chromophore and its ...
    • CorA is a copper repressible surface-associated copper(I)-binding protein produced in Methylomicrobium album BG8 

      Johnson, Kenneth; Ve, Thomas; Larsen, Øivind; Pedersen, Rolf B.; Lillehaug, Johan R.; Jensen, Harald B; Helland, Ronny; Karlsen, Odd Andre (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Cost-Effective Potential for Accurate Polarizable Embedding Calculations in Protein Environments 

      Reinholdt, Peter; Kjellgren, Erik Rosendahl; Steinmann, Casper; Olsen, Jógvan Magnus Haugaard (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-19)
      The fragment-based polarizable embedding (PE) model combined with an appropriate electronic structure method constitutes a highly efficient and accurate multiscale approach for computing spectroscopic properties of a central moiety including effects from its molecular environment through an embedding potential. There is, however, a comparatively high computational overhead associated with the ...
    • Cost-Efficient High-Resolution Linear Absorption Spectra Through Extrapolating the Dipole Moment from Real-Time Time-Dependent Electronic-Structure Theory 

      Hauge, Eirill Strand; Kristiansen, Håkon Emil; Konecny, Lukas; Kadek, Marius; Repisky, Michal; Pedersen, Thomas Bondo (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      We present a novel function fitting method for approximating the propagation of the time-dependent electric dipole moment from real-time electronic structure calculations. Real-time calculations of the electronic absorption spectrum require discrete Fourier transforms of the electric dipole moment. The spectral resolution is determined by the total propagation time, i.e. the trajectory length of the ...
    • CPPE: An Open-Source C++ and Python Library for Polarizable Embedding 

      Scheurer, Maximilian; Reinholdt, Peter; Kjellgren, Erik Rosendahl; Olsen, Jógvan Magnus Haugaard; Dreuw, Andreas; Kongsted, Jacob (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-03)
      We present a modular open-source library for polarizable embedding (PE) named CPPE. The library is implemented in C++, and it additionally provides a Python interface for rapid prototyping and experimentation in a high-level scripting language. Our library integrates seamlessly with existing quantum chemical program packages through an intuitive and minimal interface. Until now, CPPE has been ...
    • Critical Assessment of Metagenome Interpretation: the second round of challenges 

      Meyer, Fernando; Fritz, Adrian; Deng, Zhi-Luo; Koslicki, David; Lesker, Till Robin; Gurevich, Alexey; Robertson, Gary; Alser, Mohammed; Antipov, Dmitry; Beghini, Francesco; Bertrand, Denis; Brito, Jaqueline J.; Brown, C. Titus; Buchmann, Jan; Buluç, Aydin; Chen, Bo; Chikhi, Rayan; Clausen, Philip T. L. C.; Cristian, Alexandru; Dabrowski, Piotr Wojciech; Darling, Aaron E.; Egan, Rob; Eskin, Eleazar; Georganas, Evangelos; Goltsman, Eugene; Gray, Melissa A.; Hansen, Lars Hestbjerg; Hofmeyr, Steven; Huang, Pingqin; Irber, Luiz; Jia, Huijue; Jørgensen, Tue Sparholt; Kieser, Silas D.; Klemetsen, Terje; Kola, Axel; Kolmogorov, Mikhail; Korobeynikov, Anton; Kwan, Jason; LaPierre, Nathan; Lemaitre, Claire; Li, Chenhao; Limasset, Antoine; Malcher-Miranda, Fabio; Mangul, Serghei; Marcelino, Vanessa R.; Marchet, Camille; Marijon, Pierre; Meleshko, Dmitry; Mende, Daniel R.; Milanese, Alessio; Nagarajan, Niranjan; Nissen, Jakob; Nurk, Sergey; Oliker, Leonid; Paoli, Lucas; Peterlongo, Pierre; Piro, Vitor C.; Porter, Jacob S.; Rasmussen, Simon; Rees, Evan R.; Reinert, Knut; Renard, Bernhard; Robertsen, Espen Mikal; Rosen, Gail L.; Ruscheweyh, Hans-Joachim; Sarwal, Varuni; Segata, Nicola; Seiler, Enrico; Shi, Lizhen; Sun, Fengzhu; Sunagawa, Shinichi; Sørensen, Søren Johannes; Thomas, Ashleigh; Tong, Chengxuan; Trajkovski, Mirko; Tremblay, Julien; Uritskiy, Gherman; Vicedomini, Riccardo; Wang, Zhengyang; Wang, Ziye; Wang, Zhong; Warren, Andrew; Willassen, Nils Peder; Yelick, Katherine; You, Ronghui; Zeller, Georg; Zhao, Zhengqiao; Zhu, Shanfeng; Zhu, Jie; Garrido-Oter, Ruben; Gastmeier, Petra; Hacquard, Stephane; Häußler, Susanne; Khaledi, Ariane; Maechler, Friederike; Mesny, Fantin; Radutoiu, Simona; Schulze-Lefert, Paul; Smit, Nathiana; Strowig, Till; Bremges, Andreas; Sczyrba, Alexander; McHardy, Alice Carolyn (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-08)
      Evaluating metagenomic software is key for optimizing metagenome interpretation and focus of the Initiative for the Critical Assessment of Metagenome Interpretation (CAMI). The CAMI II challenge engaged the community to assess methods on realistic and complex datasets with long- and short-read sequences, created computationally from around 1,700 new and known genomes, as well as 600 new plasmids ...