Academic article

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• Tzoulis, Charalompos; Zayats, Tetyana; Knappskog, Per et al. (2015). HTRA2 p.G399S in Parkinson disease, essential tremor, and tremulous cervical dystonia. (external link)
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• Oftedal, Bergithe Eikeland; Hellesen, Alexander; Erichsen, Martina Moter et al. (2015). Dominant mutations in the autoimmune regulator AIRE are associated with common organ-specific autoimmune diseases. (external link)
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• Bredrup, Cecilie; Johansson, Stefan; Bindoff, Laurence et al. (2015). High myopia-excavated optic disc anomaly associated with a frameshift mutation in the MYC-binding protein 2 gene (MYCBP2). (external link)
• Haarr, Lars; Nilsen, Arvid E; Knappskog, Per et al. (2014). Stability of glycoprotein gene sequences of herpes simplex virus type 2 from primary to recurrent human infection, and diversity of the sequences among patients attending an STD clinic. (external link)
• Rainger, Joe; Pehlivan, Davut; Johansson, Stefan et al. (2014). Monoallelic and biallelic mutations in MAB21L2 cause a spectrum of major eye malformations. (external link)
• Haugarvoll, Kristoffer; Tzoulis, Charalampos; Tran, Gia Tuong Thi et al. (2014). Myoclonus-dystonia and epilepsy in a family with a novel epsilon-sarcoglycan mutation. (external link)
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• Fossbakk, Agnete; Kleppe, Rune; Knappskog, Per et al. (2014). Functional studies of tyrosine hydroxylase missense variants reveal distinct patterns of molecular defects in dopa-responsive dystonia. (external link)
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• Tzoulis, Charalampos; Johansson, Stefan; Haukanes, Bjørn Ivar et al. (2013). Novel SACS mutations identified by whole exome sequencing in a Norwegian family with autosomal recessive spastic ataxia of Charlevoix-Saguenay. (external link)
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• Rafaelsen, Silje Hjorth; Ræder, Helge; Fagerheim, Anne Kristine et al. (2013). Exome sequencing reveals FAM20c mutations associated with fibroblast growth factor 23-related hypophosphatemia, dental anomalies, and ectopic calcification. (external link)
• Bratland, Eirik; Magitta, Ng'weina Francis; Wolff, Anette Susanne Bøe et al. (2013). Autoantibodies against aromatic amino acid hydroxylases in patients with autoimmune polyendocrine syndrome type 1 target multiple antigenic determinants and reveal regulatory regions crucial for enzymatic activity. (external link)
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• Fiskerstrand, Torunn; Arshad, Najla; Haukanes, Bjørn Ivar et al. (2012). Familial diarrhea syndrome caused by an activating GUCY2C mutation. (external link)
• Johansson, Stefan; Irgens, Henrik Underthun; Chudasama, Kishankumar et al. (2012). Exome sequencing and genetic testing for MODY. (external link)
• Andreassen, Rune; Schregel, Julia; Kopatz, Alexander et al. (2012). A forensic DNA profiling system for Northern European brown bears (<i>Ursus arctos</i>). (external link)
• Bredrup, Cecilie; Saunier, Sophie; Oud, Machteld M. et al. (2011). Ciliopathies with skeletal anomalies and renal insufficiency due to mutations in the IFT-A gene WDR19. (external link)
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• Landaas, Elisabeth Thoverud; Johansson, Stefan; Jacobsen, Kaya Kvarme et al. (2010). An international multicenter association study of the serotonin transporter gene in persistent ADHD. (external link)
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• Mckinney, Jeffrey Alan; Turel, Banu; Winge, Ingeborg et al. (2009). Functional Properties of Missense Variants of Human Tryptophan Hydroxylase 2. (external link)
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• Franke, Barbara; Vasquez, Alejandro Arias; Johansson, Stefan et al. (2009). Multicenter analysis of the SLC6A3/DAT1 VNTR haplotype in persistent ADHD suggests differential involvement of the gene in childhood and persistent ADHD. (external link)
• Bruland, Ove; Fluge, Øystein; Akslen, Lars A. et al. (2009). Inverse correlation between PDGFC expression and lymphocyte infiltration in human papillary thyroid carcinomas. (external link)
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• Winge, Ingeborg; Mckinney, Jeffrey; Ying, Ming et al. (2008). Activation and stabilization of human tryptophan hydroxylase 2 by phosphorylation and 14-3-3 binding. (external link)
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• Johansson, Stefan; Halleland, Helene; Halmøy, Anne et al. (2008). Genetic Analyses of Dopamine Related Genes in Adult ADHD Patients Suggest an Association With the DRD5-Microsatellite Repeat, But Not With DRD4 or SLC6A3 VNTRs. (external link)
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• Magitta, Ng’weina Francis ; Bøe, AS; Johansson, S et al. (2008). A coding polymorphism in NALP1 confers risk for autoimmune Addison's disease and type 1 diabetes. (external link)
• Wolff, Anette Susanne Bøe; Oftedal, Bergithe Eikeland; Johansson, Stefan et al. (2008). AIRE variations in Addison's disease and autoimmune polyendocrine syndromes (APS): partial gene deletions contribute to APS I. (external link)
• Wolff, Anette Susanne Bøe; Erichsen, Martina Moter; Meager, Anthony et al. (2007). Autoimmune polyendocrine syndrome type 1 in Norway: Phenotypic variation, autoantibodies, and novel mutations in the autoimmune regulator gene. (external link)
• Winge, Ingeborg; Mckinney, Jeffrey Alan; Knappskog, Per et al. (2007). Characterization of wild-type and mutant forms of human tryptophan hydroxylase 2. (external link)
• Bratland, Eirik; Wolff, Anette Susanne Bøe; Haavik, Jan et al. (2007). Epitope mapping of human aromatic L-amino acid decarboxylase. (external link)
• Hahn, AF; Jones, D.L; Knappskog, Per et al. (2006). Cold-induced sweating syndrome. A report of two cases and demonstration of genetic heterogeneity. (external link)
• Rødahl, Eyvind; Van Ginderdeuren, Rita ; Knappskog, Per et al. (2006). A second decorin frame shift mutation in a family with congenital stromal corneal dystrophy. (external link)
• Winge, Ingeborg; Mckinney, Jeffrey Alan; Knappskog, Per et al. (2006). Characterization og wild-type and mutant forms of human trytopan hydroxylase 2. (external link)
• Bredholt, Geir; Storstein, Anette Margrethe; Haugen, Monica et al. (2006). Detection of autoantibodies to the BTB-kelch protein KLHL7 in cancer sera. (external link)
• Rousseau, François; Gauchat, Jean-François ; McLeod, James G. et al. (2006). Inactivation of cardiotrophin-like cytokine, a second ligand for ciliary neurotrophic factor receptor, leads to cold-induced sweating syndrome in a patient. (external link)
• Mckinney, Jeffrey Alan; Knappskog, Per; Haavik, Jan (2005). Different properties of the central and peripheral forms of human tryptophan hydroxylase. (external link)
• Bredrup, Cecilie; Knappskog, Per; Majewski, Jacek et al. (2005). Congenital stromal dystrophy of the cornea caused by a mutation in the decorin gene. (external link)
• Myhre, Anne Grethe; Stray-Pedersen, Asbjørg; Eide, E et al. (2004). Chronic mucocutaneous candidiasis and primary hypothyroidism in two families. (external link)
• McKinney, J; Mckinney, Jeffrey Alan; Knappskog, Per et al. (2004). Expression and purification of human tryptophan hydroxylase from Escherichia coli and Pichia pastoris. (external link)
• Bøe, Anette Susanne; Bredholt, Geir; Knappskog, Per et al. (2004). Autoantibodies against 21-hydroxylase and side-chain cleavage enzyme in autoimmune Addison's disease are mainly immunoglobulin G1. (external link)
• Bøe, Anette Susanne; Bredholt, G.; Knappskog, Per et al. (2004). Pyridoxal phosphatase is a novel cancer autoantigen in the central nervous system. (external link)
• Myhre, Anne Grethe; Stray-Pedersen, A.; Spangen, S. et al. (2004). Chronic mucocutaneous candidiasis and primary hypothyroidism in two families. (external link)
• Bruland, Ove; Knappskog, Per (2004). One-tube restriction enzyme digest and fluorescent labeling for restriction endonuclease fingerprinting single-strand conformational polymorphism. (external link)
• Knappskog, Per Morten; Majewski, J; Livneh, A et al. (2003). Cold-induced sweating syndrome is caused by mutations in the CRLgene. (external link)
• Miranda, Frederiko; Teigen, Knut; Thorolfsson, Matthias et al. (2002). Phosphorylation and mutations of Ser16 in human phenylalanine hydroxylase. Kinetic and structural effects. (external link)
• Wang, Lin; Erlandsen, Heidi; Haavik, Jan et al. (2002). Three-dimensional structure of human tryptophan hydroxylase and its implications for the biosynthesis of the neurotransmitters serotonin and melatonin. (external link)
• Gjetting, Torben; Romstad, Anne; Haavik, Jan et al. (2001). A phenylalanine hydroxylase amino acid polymorphism with implications for molecular diagnostics. (external link)
• Krossøy, Bjørn; Devold, Magnus; Sanders, Lisette et al. (2001). Cloning and identification of the infectious salmon anaemia virus haemagglutinin. (external link)
• Ellingsen, Ståle; Knappskog, Per; Apold, Jaran et al. (1999). Diverse PAH transcripts in lymphocytes of PKU patients with putative nonsense (G272X, Y356X) and missense (P281L, R408Q) mutations. (external link)
• Ellingsen, Ståle; Knappskog, Per; Apold, Jaran et al. (1999). Diverse PAH transcripts in lymphocytes of PKU patients with putative nonsesense (G272X, Y356X) and missense (P281L, R408Q) mutations. (external link)
• Kleppe, Rune; Uhlemann, K; Knappskog, Per et al. (1999). Urea-induced denaturation of human phenylalanine hydroxylase. (external link)
• Flatmark, Torgeir; Almås, Bjørg; Knappskog, Per et al. (1999). Tyrosine hydroxylase binds tetrahydrobiopterin cofactor with negative cooperativity as shown by kinetic analysis and surface plasmon resonance detection. (external link)
• Kleppe, Rune; Uhlemann, K; Knappskog, Per et al. (1999). Urea-induced denaturation of human phenylalanine hydroxylase. (external link)
• Schünemann, V; Meier, C; Meyer-Klaucke, W et al. (1999). Iron coordination geometry in full-length, truncated, and dehydrated forms of human tyrosine hydroxylase studied by Mossbauer and X-ray spectroscopy. (external link)
• 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. (external link)
• Chehin, R; Thorolfsson, Mathias; Knappskog, Per et al. (1998). Domain structure and stability of human phenylalanin hydroxylase inferred from infrared spectroscopy. (external link)
• Erlandsen, H; Martinez, Aurora; Knappskog, Per et al. (1997). Crystallization and preliminary diffraction analysis of a truncated homodimer of human phenylalanine hydroxylase. (external link)
• Knappskog, Per; Martinez, Aurora (1997). Effect of mutations at Cys 237 on the activation state and activity of human phenylalanine hydroxylase. (external link)
• Knappskog, Per; Martinez, Aurora (1997). Effect of mutations at cys 237 on the activation state and activity of human phenylalanine hydroxylase. (external link)
• 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. (external link)
• Erlandsen, H.; Martinez, S.; Knappskog, Per et al. (1997). Crystallization and preliminary crystallographic studies of a truncated recombinant form of human phenylalanine hydroxylase. (external link)
• 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. (external link)
• Eiken, Hans Geir; Knappskog, P.M.; Motzeldt, Kristina et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (external link)
• Eiken, Hans Geir; Knappskog, P.M.; Boman, H. et al. (1996). Relative frequency, heterogeneity and geographic clustering of PKU mutations in Norway. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• Eiken, Hans Geir; Knappskog, Per; Motzfeldt, K. et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (external link)
• Eiken, Hans Geir; Knappskog, Per; Boman, H. et al. (1996). Relative frequency, heterogeneity, and geographic clustering of PKU mutations in Norway. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• Dianzani, I.; Knappskog, Per; Desanctis, L. et al. (1996). Novel missense mutation in the phenylalanine-hydroxylase gene leading to complete loss of enzymatic-activity. (external link)
• Olsen, T.C.; Eiken, Hans Geir; Knappskog, Per et al. (1996). Mutations in the iduronate-2-sulfatase gene in five Norwegians with Hunter syndrome. (external link)
• Eiken, Hans Geir; Knappskog, Per; Motzfeldt, K. et al. (1996). Phenylketonuria genotypes correlated to metabolic phenotype groups in Norway. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• Olsen, T.C.; Eiken, Hans Geir; Knappskog, Per et al. (1996). Mutations in the iduronate-2-sulfatase gene in five Norwegians with Hunter syndrome. (external link)
• 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. (external link)
• Knappskog, Per; Haavik, Jan (1995). Tryptophan fluorescence of human phenylalanine hydroxylase produced in Escherichia coli. (external link)
• 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. (external link)
• 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. (external link)
• Dianzani, I; Knappskog, Per; de Sanctis, L et al. (1995). Novel missence mutation in the phenylalanine hydroxylase gene leading to complete loss of enzymatic activity. (external link)
• 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. (external link)
• 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. (external link)
• Knappskog, Per; Haavik, Jan (1995). Tryptophan fluorescence of human phenylalanine hydroxylase expressed in Escherichia coli. (external link)
• 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. (external link)
• 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. (external link)
• Eiken, Hans Geir; Knappskog, Per; Apold, Jaran (1993). Restriction enzyme based assays for complete genotyping of phenylketonuria patients. (external link)
• Eiken, Hans Geir; Stangeland, K.; Skjelkvåle, L. et al. (1992). PKU mutations R408Q and F299C in Norway: haplotype associations, geographic distributions, and phenotype characteristics. (external link)
• 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. (external link)

Poster

• 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.. (external link)
• 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.. (external link)
• Pakdaman, Yasaman; Austad, Eirik; Denker, Elsa et al. (2019). Characterization of STUB1in zebrafish-development of a new knock-out model to study neurodegeneration. (external link)
• Lundstad, Anne Christine; Winge, Ingeborg; Mckinney, Jeffrey Alan et al. (2005). Expression and molecular characterization of human tryptophan hydroxylases. (external link)
• Halleland, Helene; Knappskog, Per; Fasmer, Ole Bernt et al. (2005). A Nation-wide Bio-bank of blood samples from adult ADHD patients in Norway. (external link)
• Halleland, Helene; Halmøy, Anne; Fasmer, Ole Bernt et al. (2005). A Nation-wide Bio-bank of blood samples from adult ADHD patients in Norway. (external link)
• Haavik, Jan; Mckinney, Jeffrey Alan; Knappskog, Per (2004). Molecular properties of the central and peripheral forms of human tryptophan hydroxylase (TPH1 and TPH2). (external link)

Doctoral dissertation

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

Letter to the editor

• Gaare, Johannes Jernqvist; Sanchez Nido, Gonzalo; Sztromwasser, Pawel Szymon et al. (2018). No evidence for rare TRAP1 mutations influencing the risk of idiopathic Parkinson's disease. (external link)

Masters thesis

• Berger, Amund Holte; Johansson, Stefan; Knappskog, Per (2018). Sensing foul AIRE: Investigating possible reporter genes for AIRE mutations. (external link)
• Szigetvari, Peter Daniel; Haavik, Jan; Knappskog, Per (2015). Functional studies of tyrosine hydroxylase (TH) variants associated with DOPA responsive dystonia. (external link)

Short communication

• Lozić, Bernarda; Johansson, Stefan; Lovric Kojundzic, Sanja et al. (2016). Novel NALCN variant: altered respiratory and circadian rhythm, anesthetic sensitivity. (external link)
• Melone, M; Pellegrino, M; Nolano, M et al. (2014). Unusual Stüve-Wiedemann syndrome with complete maternal chromosome 5 isodisomy. . (external link)

Abstract

• Brønstad, Ingeborg; Skinningsrud, Beate; Wolff, Anette Susanne Bøe et al. (2013). Characterisation of the CYP21A2 Gene in Patients with Autoimmune Addison's Disease. (external link)
• Oftedal, Bergithe Eikeland; Erichsen, Martina Moter; Hellesen, Alexander et al. (2013). Dominant Inheritance in Autoimmune Endocrine Syndrome Type 1. (external link)
• Winge, Ingeborg; Mc Kinney, Jeffrey Alan; Halmøy, Anne et al. (2010). FUNCTIONAL STUDIES OF DISEASE-RELATED VARIANTS IN HUMAN TRYPTOPHAN HYDROXYLASE 1 AND 2. (external link)
• Bindoff, Laurence; Fiskerstrand, Torunn; H'mida-Ben Brahim, D et al. (2010). Genetic characterisation of PHARC - a novel syndrome resembling Refsum's disease. (external link)
• Haavik, Jan; Johansson, Stefan; Knappskog, Per Morten et al. (2009). From synthesis to uptake - serotonergic genes in adult ADHD. (external link)
• Bratland, Eirik; Wolff, Anette Susanne Bøe; Haavik, Jan et al. (2007). Epitope mapping of human aromatic L-amino acid decarboxylase. (external link)
• Haavik, Jan; Winge, Ingeborg; Mckinney, Jeffrey Alan et al. (2005). Biochemical characterization of mutant aromatic amino acid hydroxylases implicated in psychiatric disorders. (external link)
• Winge, Ingeborg; Mckinney, Jeffrey Alan; Knappskog, Per et al. (2005). Effects of mutations in human tryptophan hydroxylases associated with altered monoaminergic neurotransmission. (external link)

Academic literature 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. (external link)
• Aarhus, Mads; Lund-Johansen, Morten; Knappskog, Per (2011). Gene expression profiling of meningiomas: current status after a decade of microarray-based transcriptomic studies. (external link)
• Mavroconstanti, Thegna; Winge, Ingeborg; Mc Kinney, Jeffrey Alan et al. (2010). Functional studies of candidate genes involved in ADHD. (external link)

Academic chapter/article/Conference paper

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

Reader opinion piece

• Ramagopalan, Sreeram V; Hanwell, Heather EC; Giovannoni, Gavin et al. (2010). Vitamin D-Dependent Rickets, HIA-DRB1, and the Risk of Multiple Sclerosis. (external link)
• Mckinney, Jeffrey; Johansson, Stefan; Halmøy, Anne et al. (2008). A loss-of-function mutation in tryptophan hydroxylase 2 segregating with attention-deficit/hyperactivity disorder. (external link)

Editorial

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

Report

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

Academic lecture

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

Thesis at a second degree level

• Knappskog, Per (1992). Ekspresjon av normal og mutant human-fenylalin hydrokylase i Escherichia coli. (external link)

See a complete overview of publications in Cristin.