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• Bjørgo, Elisa; Knappskog, Per; Martínez, Aurora et al. (1998). Expression, characterization and 3D-structural localization of eight phnylketonuria mutations in exon 7 of the human phenylalanine hydroxylase gene. (ekstern lenke)
• Knappskog, Per; Martinez, Aurora (1997). Effect of mutations at Cys 237 on the activation state and activity of human phenylalanine hydroxylase. (ekstern lenke)
• Erlandsen, H; Martinez, Aurora; Knappskog, Per et al. (1997). Crystallization and preliminary diffraction analysis of a truncated homodimer of human phenylalanine hydroxylase. (ekstern lenke)
• Waters, P.J; Hewson, A.C; Scriver, C.R et al. (1997). Comparative analysis of phenylalanine hydroxylase A104D mutant, associated with variant phenylketonuria, and wild-type enzyme. (ekstern lenke)
• Knappskog, Per; Martinez, Aurora (1997). Effect of mutations at cys 237 on the activation state and activity of human phenylalanine hydroxylase. (ekstern lenke)
• Erlandsen, H.; Martinez, S.; Knappskog, Per et al. (1997). Crystallization and preliminary crystallographic studies of a truncated recombinant form of human phenylalanine hydroxylase. (ekstern lenke)
• Døskeland, Anne Paulus; Martinez, Aurora; Knappskog, Per et al. (1996). Phosphorylation of recombinant human phenylalanine hydroxylase. Effect on catalytic activity, substrate activation and protection against non-spesific cleavage of the fusion protein by restriction protease. (ekstern lenke)
• Lüdecke, B.; Knappskog, Per; Clayton, P. T. et al. (1996). Recessively inherited L-DOPA-responsive Parkinsonism in infancy caused by a point mutation (L205P) in the tyrosine hydroxylase gene. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Apold, Jaran et al. (1996). PKU mutation G46S is associated with increased aggregation and degradation of the phenylalanine hydroxylase enzyme. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1996). PKU mutation (D143G) associated with an apparent high residual enzyme activity: Expression of a kinetic variant form of phenylalanine hydroxilase in three different systems. (ekstern lenke)
• Knappskog, Per; Flatmark, Torgeir; Aarden, J. M. et al. (1996). Structure-function relationship in human phenylalanine hydroxylase . Effect of terminal deletions on the oligomerization, activation and cooperativity of substrate binding to the enzyme. (ekstern lenke)
• Døskeland, Anne Paulus; Martinez, Aurora; Knappskog, Per et al. (1996). Phosphorylation of recombinant human phenylalanine hydroxylase. Effect on catalytic activity, substrate activation and protection against non-specific cleavage of the fusion protein by restriction protease. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Guldberg, P. et al. (1996). DGGE analysis as a supplement to SSCP analysis of the phenylalanine hydroxylase gene: detection of eight (one de novo, seven inherited) of nine remaining Norwegian PKU mutations. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Motzfeldt, K. et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (ekstern lenke)
• Olsen, T.C.; Eiken, Hans Geir; Knappskog, Per et al. (1996). Mutations in the iduronate-2-sulfatase gene in five Norwegians with Hunter syndrome. (ekstern lenke)
• Dianzani, I.; Knappskog, Per; Desanctis, L. et al. (1996). Novel missense mutation in the phenylalanine-hydroxylase gene leading to complete loss of enzymatic-activity. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Boman, H. et al. (1996). Relative frequency, heterogeneity, and geographic clustering of PKU mutations in Norway. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Apold, Jaran et al. (1996). PKU mutation G46S is associated with increased aggregation and degradation of the phenylalanine hydroxylase enzyme. (ekstern lenke)
• Døskeland, Anne Paulus; Martinez, Aurora; Knappskog, Per et al. (1996). Phosphorylation of recombinant human phenylalanine hydroxylase. Effect on catalytic activity, substrate activation and protection against non-spesific cleavage of the fusion protein by restriction protease. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Motzfeldt, K. et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Guldberg, P. et al. (1996). DGGE analysis as a supplement to SSCP analysis of the phenylalanine hydroxylase gene: detection of eight (one de novo, seven inherited) of nine remaining Norwegian PKU mutations. (ekstern lenke)
• Olsen, T.C.; Eiken, Hans Geir; Knappskog, Per et al. (1996). Mutations in the iduronate-2-sulfatase gene in five Norwegians with Hunter syndrome. (ekstern lenke)
• Lüdecke, B.; Knappskog, Per; Clayton, P.T. et al. (1996). Recessively inherited L-DOPA-responsive parkinsonism in infancy caused by a poin mutation (L205P) in the tyrosine hydroxylase gene. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1996). PKU mutation (D143G) associated with an apparent high residual enzyme activity: Expression of a kinetic variant form of phenylalanine hydroxilase in three different systems. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, P.M.; Motzeldt, Kristina et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (ekstern lenke)
• Olsen, T.F.; Eiken, Hans Geir; Knappskog, P.M. et al. (1996). Mutations in the Induronate 2-sulfatase gene in five Norwegians with Hunter syndrome. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, P.M.; Boman, H. et al. (1996). Relative frequency, heterogeneity and geographic clustering of PKU mutations in Norway. (ekstern lenke)
• Knappskog, Per; Flatmark, Torgeir; Mallet, J. et al. (1995). Recessively inherited L-DOPA-responsive dystonia caused by a point mutation (Q381K) in the tyrosine hydroxylase gene. (ekstern lenke)
• Knappskog, Per; Haavik, Jan (1995). Tryptophan fluorescence of human phenylalanine hydroxylase expressed in Escherichia coli. (ekstern lenke)
• Martinez, Aurora; Knappskog, Per; Olafsdottir, S et al. (1995). Expression of recombinant human phenylalanine hydroxylase as fusion protein in Escherichia coli circumvents proteolytic degradation by host cell proteases. Isolation and characterization of the wild-type enzyme. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1995). The PKU mutation S349P causes complete loss of catalytic activity in the recombinant phenylalanine hydroxylase enzyme. (ekstern lenke)
• Knappskog, Per; Flatmark, Torgeir; Mallet, J et al. (1995). Reccessively inherited L-DOPA-responsive dystonia caused by a point mutation (Q381K) in the tyrosine hydroxylase gene. (ekstern lenke)
• Knappskog, Per; Haavik, Jan (1995). Tryptophan fluorescence of human phenylalanine hydroxylase produced in Escherichia coli. (ekstern lenke)
• Dianzani, I; Knappskog, Per; Sanctis, L de et al. (1995). Novel missence mutation in the phenylalanine hydroxylase gene leading to complete loss of enzymatic activity. (ekstern lenke)
• Martinez, Aurora; Knappskog, Per; Olafsdottir, S et al. (1995). Expression of recombinant human phenylalanine hydroxylase as fusion protein in Escherichia coli circumvents proteolytic degradation by host cell proteases. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1994). The PKU mutation S349P causes complete loss of catalytic activity in the recombinant phenylalanine hydroxylase enzyme. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Apold, Jaran (1993). Restriction enzyme based assays for complete genotyping of phenylketonuria patients. (ekstern lenke)
• Eiken, Hans Geir; Knappskog, Per; Apold, Jaran et al. (1992). A de novo phenylketonuria mutation: ATG(Met) to ATA(Ile) in the start codon of the phenylalanine hydroxylase gene. (ekstern lenke)
• Eiken, Hans Geir; Stangeland, K.; Skjelkvåle, L. et al. (1992). PKU mutations R408Q and F299C in Norway: haplotype associations, geographic distributions, and phenotype characteristics. (ekstern lenke)

Poster

• Pakdaman, Yasaman; Denker, Elsa; Austad, Eirik et al. (2020). Modeling neurodegeneration in zebrafish – mutation in spinocerebellar ataxia 16 associated gene stub1 affects Purkinje neuron morphology and leads to behavioral changes.. (ekstern lenke)
• Pakdaman, Yasaman; Denker, Elsa; Austad, Eirik et al. (2020). Modeling Spinocerebellar Ataxia in zebrafish:U-box domain knockout of stub1 gene affects Purkinje neuron morphology and leads to behavioral changes.. (ekstern lenke)
• Pakdaman, Yasaman; Austad, Eirik; Denker, Elsa et al. (2019). Characterization of STUB1in zebrafish-development of a new knock-out model to study neurodegeneration. (ekstern lenke)
• Halleland, Helene; Halmøy, Anne; Fasmer, Ole Bernt et al. (2005). A Nation-wide Bio-bank of blood samples from adult ADHD patients in Norway. (ekstern lenke)
• Lundstad, Anne Christine; Winge, Ingeborg; Mckinney, Jeffrey Alan et al. (2005). Expression and molecular characterization of human tryptophan hydroxylases. (ekstern lenke)
• Halleland, Helene; Knappskog, Per; Fasmer, Ole Bernt et al. (2005). A Nation-wide Bio-bank of blood samples from adult ADHD patients in Norway. (ekstern lenke)
• Haavik, Jan; Mckinney, Jeffrey Alan; Knappskog, Per (2004). Molecular properties of the central and peripheral forms of human tryptophan hydroxylase (TPH1 and TPH2). (ekstern lenke)

Doktorgradsavhandling

• Tronstad, Rune Rose; Fiskerstrand, Torunn; Karlsen, Tom Hemming et al. (2019). Clinical and molecular effects of guanylate cyclase C-activation. (ekstern lenke)
• Knappskog, Per (1997). Molecular characterization of disease related mutant forms of human phenylalanine hydroxylase and tyrosine hydroxylase. (ekstern lenke)

Mastergradsoppgave

• Berger, Amund Holte; Johansson, Stefan; Knappskog, Per (2018). Sensing foul AIRE: Investigating possible reporter genes for AIRE mutations. (ekstern lenke)
• Szigetvari, Peter Daniel; Haavik, Jan; Knappskog, Per (2015). Functional studies of tyrosine hydroxylase (TH) variants associated with DOPA responsive dystonia. (ekstern lenke)
• Knappskog, Per (1992). Ekspresjon av normal og mutant human-fenylalin hydrokylase i Escherichia coli. (ekstern lenke)

Leserinnlegg

• Gaare, Johannes Jernqvist; Nido, Gonzalo Sanchez; Sztromwasser, Pawel Szymon et al. (2018). No evidence for rare TRAP1 mutations influencing the risk of idiopathic Parkinson's disease. (ekstern lenke)
• Ramagopalan, Sreeram V; Hanwell, Heather EC; Giovannoni, Gavin et al. (2010). Vitamin D-Dependent Rickets, HIA-DRB1, and the Risk of Multiple Sclerosis. (ekstern lenke)
• Mckinney, Jeffrey; Johansson, Stefan; Halmøy, Anne et al. (2008). A loss-of-function mutation in tryptophan hydroxylase 2 segregating with attention-deficit/hyperactivity disorder. (ekstern lenke)

Vitenskapelig oversiktsartikkel/review

• Schregel, Julia; Kopatz, Alexander; Hagen, Snorre et al. (2012). Limited gene flow among brown bear populations in far Northern Europe? Genetic analysis of the east–west border population in the Pasvik Valley. (ekstern lenke)
• Aarhus, Mads; Lund-Johansen, Morten; Knappskog, Per (2011). Gene expression profiling of meningiomas: current status after a decade of microarray-based transcriptomic studies. (ekstern lenke)
• Mavroconstanti, Thegna; Winge, Ingeborg; Kinney, Jeffrey Alan Mc et al. (2010). Functional studies of candidate genes involved in ADHD. (ekstern lenke)

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

• Aubi, Oscar; Knappskog, Per; Martinez, Aurora (2012). Early Stage Discovery and Validation of Pharmacological Chaperones for the Correction of Protein Misfolding Diseases. (ekstern lenke)
• Rødahl, Eyvind; Christensen, Anne Elisabeth; Fiskerstrand, Torunn et al. (2012). ADAMTSL4-Related Eye Disorders Includes: Autosomal Recessive Isolated Ectopia Lentis, Ectopia Lentis et Pupillae. (ekstern lenke)
• Flatmark, Torgeir; Knappskog, Per (1998). Mutations in the genes of the catecholamine biosynthetic enzymes and human diseases. (ekstern lenke)
• Flatmark, Torgeir; Knappskog, Per (1998). Mutations in the genes of the catecholamine biosynthetic enzymes and human diseases. (ekstern lenke)
• Flatmark, Torgeir; Knappskog, Per; Bjørgo, Elisa et al. (1997). Molecular characterization of disease related mutant forms of human phenylalanine hydroxylase and tyrosine hydroxylase. (ekstern lenke)
• Flatmark, Torgeir; Knappskog, Per; Bjørgo, Elisa et al. (1997). Molecular (-en 1) characterization of disease related mutant forms of human phenylalanine hydroxylase and tyrosine hydroxylase. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1993). Expression of wild type and mutant forms of human phenylalanine hydroxylase in E.Coli. (ekstern lenke)
• Knappskog, Per; Eiken, Hans Geir; Martinez, Aurora et al. (1993). Expression of recombinant wild type and mutant forms of human phenylalanine hydroxylase in E. coli. (ekstern lenke)

Leder

• Leo, R. Di; Nolano, M.; Boman, H et al. (2010). Central and peripheral autonomic failure in cold-induced sweating syndrome type 1. (ekstern lenke)

Rapport

• Bjervamoen, Siv Grete; Eiken, Hans Geir; Smith, Martin et al. (2008). Populasjonsovervåkning av brunbjørn 2005-2008 : rapport for Sør-Norge, 2007. (ekstern lenke)
• Eiken, Hans Geir; Bjervamoen, Siv Grete; Smith, Martin et al. (2007). Populasjonsovervåkning av brunbjørn 2005-2008: Rapport for Sør-Trøndelag, Nord-Trøndelag, Nordland, Troms og Finnmark 2006. (ekstern lenke)
• Eiken, Hans Geir; Wikan, Steinar; Smith, Martin et al. (2006). Populasjonsovervåkning av brunbjørn 2005-2008 : Rapport for Sør-Varanger, Finnmark for 2004 og 2005. (ekstern lenke)

Vitenskapelig foredrag

• Hammenfors, D; Løvås, Kristian; Bredholt, G et al. (2005). Variable expression of FKBP51 in Addison's Disease - a parameter of glucocorticoid sensitivity ?. (ekstern lenke)
• Bratland, E; Bredholt, G; Knappskog, Per et al. (2005). Cellular immunity to 21-hydroxylase in patients with autoimmune Addison's disease. (ekstern lenke)
• Boman, Helge; Løvlie, Roger; Knappskog, Per (1998). Three new FHH mutations and eight genetic variants in the calcium sensing receptor (CASR) gene. (ekstern lenke)
• Toska, Karen; Haavik, Jan; Knappskog, Per (1998). Expression and purification strategies for aromatic amino acid hydroxylases. (ekstern lenke)
• Ekern, Trude; Toska, Karen; Knappskog, Per et al. (1998). Strategies for the expression, purification and immunological characterization of aromatic amino acid hydroxylases. (ekstern lenke)
• Kleppe, Rune; Knappskog, Per; Haavik, Jan (1998). Thermodynamic stability of human phenylalanine hydroxylase. (ekstern lenke)
• Waters, P.J.; Hewson, A.S.; Scriver, C.R. et al. (1996). Comparative analysis of phenylalanine hydroxylase (PAH) A104D mutant, associated with variant phenylketonuria (PKU) and wild-type enzyme. (ekstern lenke)
• Flatmark, Torgeir; Knappskog, Per; Martinez, Aurora et al. (1995). Characterization of the wild-type and mutant forms of recombinant human phenylalanine hydroxylase. (ekstern lenke)
• Døskeland, Anne Paulus; Knappskog, Per; Martinez, Aurora et al. (1995). Phosphorylation of recombinant human phenylalanine hydroxylase expressed in E.coli. (ekstern lenke)

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