Browsing Bergen Open Research Archive by Author "Martinez, Aurora"
Now showing items 1-20 of 36
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The 14-3-3 proteins in regulation of cellular metabolism
Kleppe, Rune; Martinez, Aurora; Døskeland, Stein Ove; Haavik, Jan (Peer reviewed; Journal article, 2011-09)Thirty years ago, it was discovered that 14-3-3 proteins could activate enzymes involved in amino acid metabolism. In the following decades, 14-3-3s have been shown to be involved in many different signaling pathways that ... -
Acute Intermittent Porphyria: An Overview of Therapy Developments and Future Perspectives Focusing on Stabilisation of HMBS and Proteostasis Regulators
Bustad, Helene J.; Kallio, Juha Pekka; Vorland, Marta; Fiorentino, Valeria; Sandberg, Sverre; Schmitt, Caroline; Aarsand, Aasne Karine; Martinez, Aurora (Journal article; Peer reviewed, 2021)Acute intermittent porphyria (AIP) is an autosomal dominant inherited disease with low clinical penetrance, caused by mutations in the hydroxymethylbilane synthase (HMBS) gene, which encodes the third enzyme in the haem ... -
Arc is a flexible modular protein capable of reversible self-oligomerization
Myrum, Craig; Baumann, Anne; Bustad, Helene J.; Flydal, Marte Innselset; Mariaule, Vincent; Alvira, Sara; Cuéllar, Jorge; Haavik, Jan; Soulé, Jonathan; Valpuesta, José María; Márquez, José Antonio; Martinez, Aurora; Bramham, Clive R. (Peer reviewed; Journal article, 2015)The immediate early gene product Arc (activity-regulated cytoskeleton-associated protein) is posited as a master regulator of long-term synaptic plasticity and memory. However, the physicochemical and structural properties ... -
The Benefit of Large Neutral Amino Acid Supplementation to a Liberalized Phenylalanine-Restricted Diet in Adult Phenylketonuria Patients: Evidence from Adult Pah-Enu2 Mice
Van Vliet, Danique; van der Goot, Els; van Ginkel, Wiggert G; van Faassen, Martijn H J R; de Blaauw, Pim; Kema, Ido P.; Martinez, Aurora; Heiner-Fokkema, M Rebecca; van der Zee, Eddy A; van Spronsen, Francjan J. (Peer reviewed; Journal article, 2019-09-19)Many phenylketonuria (PKU) patients cannot adhere to the severe dietary restrictions as advised by the European PKU guidelines, which can be accompanied by aggravated neuropsychological impairments that, at least in part, ... -
Characterization of porphobilinogen deaminase mutants reveals that arginine-173 is crucial for polypyrrole elongation mechanism
Bustad, Helene J.; Kallio, Juha Pekka; Laitaoja, Mikko; Toska, Karen; Kursula, Inari; Martinez, Aurora; Jänis, Janne (Journal article; Peer reviewed, 2021)Porphobilinogen deaminase (PBGD), the third enzyme in the heme biosynthesis, catalyzes the sequential coupling of four porphobilinogen (PBG) molecules into a heme precursor. Mutations in PBGD are associated with acute ... -
Conformational Sampling and Nucleotide-Dependent Transitions of the GroEL Subunit Probed by Unbiased Molecular Dynamics Simulations
Skjærven, Lars; Grant, Barry; Muga, Arturo; Teigen, Knut; McCammon, J. Andrew; Reuter, Nathalie; Martinez, Aurora (Peer reviewed; Journal article, 2011-03-10)GroEL is an ATP dependent molecular chaperone that promotes the folding of a large number of substrate proteins in E. coli. Large-scale conformational transitions occurring during the reaction cycle have been characterized ... -
Conformational stability and activity analysis of two hydroxymethylbilane synthase mutants, K132N and V215E, with different phenotypic association with acute intermittent porphyria
Bustad, Helene J.; Vorland, Marta; Rønneseth, Eva; Sandberg, Sverre; Martinez, Aurora; Toska, Karen (Peer reviewed; Journal article, 2013-08)The autosomal dominantly inherited disease AIP (acute intermittent porphyria) is caused by mutations in HMBS [hydroxymethylbilane synthase; also known as PBG (porphobilinogen) deaminase], the third enzyme in the haem ... -
Conformational stabilization as a strategy to prevent nucleophosmin mislocalization in leukemia
Urbaneja, María A.; Skjærven, Lars; Aubi Catevilla, Oscar; Underhaug, Jarl; López, David J.; Arregi, Igor; Alonso-Mariño, Marián; Cuevas, Andoni; Rodríguez, José A.; Martinez, Aurora; Bañuelos, Sonia (Peer reviewed; Journal article, 2017-10-24)Nucleophosmin (NPM) is a nucleolar protein involved in ribosome assembly and cell homeostasis. Mutations in the C-terminal domain of NPM that impair native folding and localization are associated with acute myeloid leukemia ... -
Cuticle integrity and biogenic amine synthesis in Caenorhabditis elegans require the cofactor tetrahydrobiopterin (BH4)
Loer, Curtis M.; Calvo, Ana C; Watschinger, Katrin; Werner-Felmayer, Gabriele; O'Rourke, Delia; Stroud, Dave; Tong, Amy; Gotenstein, Jennifer R.; Chisholm, Andrew D.; Hodgkin, Jonathan; Werner, Ernst R.; Martinez, Aurora (Peer reviewed; Journal article, 2015-03-24)Tetrahydrobiopterin (BH4) is the natural cofactor of several enzymes widely distributed among eukaryotes, including aromatic amino acid hydroxylases (AAAHs), nitric oxide synthases (NOSs), and alkylglycerol monooxygenase ... -
Effect of nerve injury on the number of dorsal root ganglion neurons and autotomy behavior in adult Bax-deficient mice
Lyu, Chuang; Lyu, Gong-Wei; Martinez, Aurora; Shi, Tie-Jun (Peer reviewed; Journal article, 2017-08-30)Background: The proapoptotic molecule BAX, plays an important role in mitochondrial apoptotic pathway. Dorsal root ganglion (DRG) neurons depend on neurotrophic factors for survival at early developmental stages. Withdrawal ... -
Effective polyethylene glycol passivation for the inhibition of surface interactions of peripheral blood mononuclear cells and platelets
Sauter, Alexander; Richter, Gunther; Micoulet, Alexandre; Martinez, Aurora; Spatz, Joachim P.; Appel, Silke (Peer reviewed; Journal article, 2013-06-20)The inhibition of unspecific adhesion of human white blood cells is a prerequisite for applications requiring the control of defined surface interactions. In this study, a passivation agent based on polyethylene glycol ... -
EU-OPENSCREEN: A novel collaborative approach to facilitate chemical biology
Brennecke, Philip; Rasina, Dace; Aubi Catevilla, Oscar; Herzog, Katja; Landskron, Johannes; Cautain, Bastien; Vicente, Francisca; Quintana, Jordi; Mestres, Jordi; Stechmann, Bahne; Ellinger, Bernhard; Brea, Jose; Kolanowski, Jacek L.; Pilarski, Radosław; Orzáez, Mar; Pineda-Lucena, Antonio; Laraia, Luca; Nami, Faranak; Zielenkiewicz, Piotr; Paruch, Kamil; Hansen, Espen; von Kries, Jens P.; Neuenschwander, Martin; Specker, Edgar; Bartunek, Petr; Šímová, Šárka; Leśnikowski, Zbigniew; Krauss, Stefan; Lehtiö, Lari; Bilitewski, Ursula; Brönstrup, Mark; Tasken, Kjetil; Jirgensons, Aigars; Lickert, Heiko; Clausen, Mads H.; Andersen, Jeanette hammer; Vicent, Maria J.; Genilloud, Olga; Martinez, Aurora; Nazaré, Marc; Fecke, Wolfgang; Gribbon, Philip (Peer reviewed; Journal article, 2019)Compound screening in biological assays and subsequent optimization of hits is indispensable for the development of new molecular research tools and drug candidates. To facilitate such discoveries, the European Research ... -
Functional studies of tyrosine hydroxylase missense variants reveal distinct patterns of molecular defects in dopa-responsive dystonia
Fossbakk, Agnete; Kleppe, Rune; Knappskog, Per; Martinez, Aurora; Haavik, Jan (Peer reviewed; Journal article, 2014-06-03)Congenital tyrosine hydroxylase deficiency (THD) is found in autosomal-recessive Dopa-responsive dystonia and related neurological syndromes. The clinical manifestations of THD are variable, ranging from early-onset lethal ... -
G Protein-Gated Inwardly Rectifying Potassium Channel Subunit 3 Is Upregulated in Rat DRGs and Spinal Cord After Peripheral Nerve Injury
Lyu, Chuang; Lyu, Gong-Wei; Mulder, Jan; Martinez, Aurora; Shi, Tie-Jun (Journal article; Peer reviewed, 2020)Background: G protein-gated inwardly rectifying potassium (GIRK) channels are involved in the regulation of neuronal excitability. Four GIRK subunits (GIRK1-4) are expressed in rat dorsal root ganglia (DRGs). Recently, we ... -
HAMLET forms annular oligomers when deposited with phoshpolipid monolayers
Baumann, Anne; Gjerde, Anja Underhaug; Ying, Ming; Svanborg, Catharina; Holmsen, Holm A.; Glomm, Wilhelm; Martinez, Aurora; Halskau, Øyvind (Peer reviewed; Journal article, 2012-04)Recently, the anticancer activity of human α-lactalbumin made lethal to tumor cells (HAMLET) has been linked to its increased membrane affinity in vitro, at neutral pH, and ability to cause leakage relative to the inactive ... -
HAMLET interacts with lipid membranes and perturbs their structure and integrity
Mossberg, Ann-Kristin; Puchades, Maja; Halskau, Øyvind; Baumann, Anne; Lanekoff, Ingela; Chao, Yinxia; Martinez, Aurora; Svanborg, Catharina; Karlsson, Roger (Peer reviewed; Journal article, 2010-01-23)Background Cell membrane interactions rely on lipid bilayer constituents and molecules inserted within the membrane, including specific receptors. HAMLET (human α-lactalbumin made lethal to tumor cells) is a tumoricidal ... -
High-affinity anti-Arc nanobodies provide tools for structural and functional studies
Markusson, Sigurbjörn; Hallin, Erik Ingmar; Bustad, Helene J.; Raasakka, Arne; Xu, Ju; Muruganandam, Gopinath; Loris, Remy; Martinez, Aurora; Bramham, Clive Raymond Evjen; Kursula, Petri (Journal article; Peer reviewed, 2022)Activity-regulated cytoskeleton-associated protein (Arc) is a multidomain protein of retroviral origin with a vital role in the regulation of synaptic plasticity and memory formation in mammals. However, the mechanistic ... -
Inhibition of the Human Hsc70 System by Small Ligands as a Potential Anticancer Approach
Dublang, Leire; Underhaug, Jarl; Flydal, Marte Innselset; Velasco-Carneros, Lorea; Maréchal, Jean-Didier; Moro, Fernando; Boyano, Maria Dolores; Martinez, Aurora; Muga, Arturo (Journal article; Peer reviewed, 2021)Heat shock protein (Hsp) synthesis is upregulated in a wide range of cancers to provide the appropriate environment for tumor progression. The Hsp110 and Hsp70 families have been associated to cancer cell survival and ... -
Inhibition of VMAT2 by β2-adrenergic agonists, antagonists, and the atypical antipsychotic ziprasidone
Støve, Svein Isungset; Skjevik, Åge Aleksander; Teigen, Knut; Martinez, Aurora (Journal article; Peer reviewed, 2022)Vesicular monoamine transporter 2 (VMAT2) is responsible for packing monoamine neurotransmitters into synaptic vesicles for storage and subsequent neurotransmission. VMAT2 inhibitors are approved for symptomatic treatment ... -
Modelling cellular signal communication mediated by phosphorylation dependent interaction with 14-3-3 proteins
Kleppe, Rune; Ghorbani, Sadaf; Martinez, Aurora; Haavik, Jan (Peer reviewed; Journal article, 2014-01-03)The 14-3-3 proteins are important effectors of Ser/Thr phosphorylation in eukaryotic cells. Using mathematical modelling we investigated the roles of these proteins as effectors in signalling pathways that involve ...