Please enable Javascript

Labmeeting uses lots of Javascript - basically you can't use the site without it. So please enable Javascript in your browser. If your browser does not support Javascript, we recommend Firefox.

Papers authored by Vårum KM

Collect these papers and discover other ones on Labmeeting. Learn more.

Aromatic Residues in the Catalytic Center of Chitinase A from Serratia marcescens Affect Processivity, Enzyme Activity, and Biomass Converting Efficiency.

+ cite this

+ View Abstract

Zakariassen H, Aam BB, Horn SJ, Vårum KM, Sørlie M, and Eijsink VG

The Journal of biological chemistry 284(16):10610-7, 2009 Apr 17 - Who cited this? | PubMed ID: 19244232 | Fulltext

Degradation of chitosans with chitinase G from Streptomyces coelicolor A3(2): production of chito-oligosaccharides and insight into subsite specificities.

+ cite this

+ View Abstract

Heggset EB, Hoell IA, Kristoffersen M, Eijsink VG, and Vårum KM

Biomacromolecules 10(4):892-9, 2009 Apr 13 - Who cited this? | PubMed ID: 19222164 | Fulltext

Tailoring of Chitosans for Gene Delivery: Novel Self-Branched Glycosylated Chitosan Oligomers with Improved Functional Properties.

+ cite this

+ View Abstract

Strand SP, Issa MM, Christensen BE, Vårum KM, and Artursson P

Biomacromolecules, 2008 Oct 4 - Who cited this? | PubMed ID: 18834173 | Fulltext

Characterization of Chitin and Its Hydrolysis to GlcNAc and GlcN.

+ cite this

+ View Abstract

Einbu A and Vårum KM

Biomacromolecules, 2008 Jun 10 - Who cited this? | PubMed ID: 18540645 | Fulltext

Towards new enzymes for biofuels: lessons from chitinase research.

+ cite this

+ View Abstract

Eijsink VG, Vaaje-Kolstad G, Vårum KM, and Horn SJ

Trends in biotechnology 26(5):228-35, 2008 May - Who cited this? | PubMed ID: 18367275 | Fulltext

The role of Arg114 at subsites E and F in reactions catalyzed by hen egg-white lysozyme.

+ cite this

+ View Abstract

Kawamura S, Chijiiwa Y, Minematsu T, Fukamizo T, Vårum KM, and Torikata T

Bioscience, biotechnology, and biochemistry 72(3):823-32, 2008 Mar - Who cited this? | PubMed ID: 18323666 | Fulltext

Kinetics of hydrolysis of chitin/chitosan oligomers in concentrated hydrochloric acid.

+ cite this

+ View Abstract

Einbu A, Grasdalen H, and Vårum KM

Carbohydrate research 342(8):1055-62, 2007 Jun 11 - Who cited this? | PubMed ID: 17359948 | Fulltext

Depolymerization and de-N-acetylation of chitin oligomers in hydrochloric acid.

+ cite this

+ View Abstract

Einbu A and Vårum KM

Biomacromolecules 8(1):309-14, 2007 Jan - Who cited this? | PubMed ID: 17206822 | Fulltext

Rice chitinases: sugar recognition specificities of the individual subsites.

+ cite this

+ View Abstract

Sasaki C, Vårum KM, Itoh Y, Tamoi M, and Fukamizo T

Glycobiology 16(12):1242-50, 2006 Dec - Who cited this? | PubMed ID: 16957091 | Fulltext

Costs and benefits of processivity in enzymatic degradation of recalcitrant polysaccharides.

+ cite this

+ View Abstract

Horn SJ, Sikorski P, Cederkvist JB, Vaaje-Kolstad G, Sørlie M, Synstad B, Vriend G, Vårum KM, and Eijsink VG

Proceedings of the National Academy of Sciences of the United States of America 103(48):18089-94, 2006 Nov 28 - Who cited this? | PubMed ID: 17116887 | Fulltext

Targeted gene delivery with trisaccharide-substituted chitosan oligomers in vitro and after lung administration in vivo.

+ cite this

+ View Abstract

Issa MM, Köping-Höggård M, Tømmeraas K, Vårum KM, Christensen BE, Strand SP, and Artursson P

Journal of controlled release : official journal of the Controlled Release Society 115(1):103-12, 2006 Sep 28 - Who cited this? | PubMed ID: 16901570 | Fulltext

Serratia marcescens chitinases with tunnel-shaped substrate-binding grooves show endo activity and different degrees of processivity during enzymatic hydrolysis of chitosan.

+ cite this

+ View Abstract

Sikorski P, Sørbotten A, Horn SJ, Eijsink VG, and Vårum KM

Biochemistry 45(31):9566-74, 2006 Aug 8 - Who cited this? | PubMed ID: 16878991 | Fulltext

Transepithelial transport of morphine and mannitol in Caco-2 cells: the influence of chitosans of different molecular weights and degrees of acetylation.

+ cite this

+ View Abstract

Dale O, Nilsen T, Olaussen G, Tvedt KE, Skorpen F, Smidsrød O, and Vårum KM

The Journal of pharmacy and pharmacology 58(7):909-15, 2006 Jul - Who cited this? | PubMed ID: 16805950 | Fulltext

Endo/exo mechanism and processivity of family 18 chitinases produced by Serratia marcescens.

+ cite this

+ View Abstract

Horn SJ, Sørbotten A, Synstad B, Sikorski P, Sørlie M, Vårum KM, and Eijsink VG

The FEBS journal 273(3):491, 2006 Feb - Who cited this? | PubMed ID: 16420473 | Fulltext

Peptidoglycan N-acetylglucosamine deacetylases from Bacillus cereus, highly conserved proteins in Bacillus anthracis.

+ cite this

+ View Abstract

Psylinakis E, Boneca IG, Mavromatis K, Deli A, Hayhurst E, Foster SJ, Vårum KM, and Bouriotis V

The Journal of biological chemistry 280(35):30856-63, 2005 Sep 2 - Who cited this? | PubMed ID: 15961396 | Fulltext

A miniaturized nebulization catheter for improved gene delivery to the mouse lung.

+ cite this

+ View Abstract

Köping-Höggård M, Issa MM, Köhler T, Tronde A, Vårum KM, and Artursson P

The journal of gene medicine 7(9):1215-22, 2005 Sep - Who cited this? | PubMed ID: 15895386 | Fulltext

Development and application of a model for chitosan hydrolysis by a family 18 chitinase.

+ cite this

+ View Abstract

Sikorski P, Stokke BT, Sørbotten A, Vårum KM, Horn SJ, and Eijsink VG

Biopolymers 77(5):273-85, 2005 Apr 5 - Who cited this? | PubMed ID: 15637701 | Fulltext

Degradation of chitosans with chitinase B from Serratia marcescens. Production of chito-oligosaccharides and insight into enzyme processivity.

+ cite this

+ View Abstract

Sørbotten A, Horn SJ, Eijsink VG, and Vårum KM

The FEBS journal 272(2):538, 2005 Jan - Who cited this? | PubMed ID: 15654891 | Fulltext

Influence of chitosan structure on the formation and stability of DNA-chitosan polyelectrolyte complexes.

+ cite this

+ View Abstract

Strand SP, Danielsen S, Christensen BE, and Vårum KM

Biomacromolecules 6(6):3357-66, 2005 - Who cited this? | PubMed ID: 16283766 | Fulltext

Improved chitosan-mediated gene delivery based on easily dissociated chitosan polyplexes of highly defined chitosan oligomers.

+ cite this

+ View Abstract

Köping-Höggård M, Vårum KM, Issa M, Danielsen S, Christensen BE, Stokke BT, and Artursson P

Gene therapy 11(19):1441-52, 2004 Oct - Who cited this? | PubMed ID: 15269712 | Fulltext

Structural analysis of chitosan mediated DNA condensation by AFM: influence of chitosan molecular parameters.

+ cite this

+ View Abstract

Danielsen S, Vårum KM, and Stokke BT

Biomacromolecules 5(3):928-36, 2004 - Who cited this? | PubMed ID: 15132683 | Fulltext

Solution properties of chitin in alkali.

+ cite this

+ View Abstract

Einbu A, Naess SN, Elgsaeter A, and Vårum KM

Biomacromolecules 5(5):2048-54, 2004 - Who cited this? | PubMed ID: 15360323 | Fulltext

Relationship between the physical shape and the efficiency of oligomeric chitosan as a gene delivery system in vitro and in vivo.

+ cite this

+ View Abstract

Köping-Höggård M, Mel'nikova YS, Vårum KM, Lindman B, and Artursson P

The journal of gene medicine 5(2):130-41, 2003 Feb - Who cited this? | PubMed ID: 12539151 | Fulltext

Biospecific fractionation of chitosan.

+ cite this

+ View Abstract

Sasaki C, Kristiansen A, Fukamizo T, and Vårum KM

Biomacromolecules 4(6):1686-90, 2003 - Who cited this? | PubMed ID: 14606896 | Fulltext

Preparation and characterisation of chitosans with oligosaccharide branches.

+ cite this

+ View Abstract

Tømmeraas K, Köping-Höggård M, Vårum KM, Christensen BE, Artursson P, and Smidsrød O

Carbohydrate research 337(24):2455-62, 2002 Nov 29 - Who cited this? | PubMed ID: 12493230 | Fulltext

Preparation and characterisation of fluorescent chitosans using 9-anthraldehyde as fluorophore.

+ cite this

+ View Abstract

Tømmeraas K, Strand SP, Tian W, Kenne L, and Vårum KM

Carbohydrate research 336(4):291-6, 2001 Dec 7 - Who cited this? | PubMed ID: 11728397 | Fulltext

Binding of a highly de-N-acetylated chitosan to Japanese pheasan lysozyme as measured by 1H-NMR spectroscopy.

+ cite this

+ View Abstract

Fukamizo T, Yamaguchi T, Araki T, Torikata T, Kristiansen A, and Vårum KM

Bioscience, biotechnology, and biochemistry 65(8):1766-73, 2001 Aug - Who cited this? | PubMed ID: 11577716 | Fulltext

Preparation and characterisation of oligosaccharides produced by nitrous acid depolymerisation of chitosans.

+ cite this

+ View Abstract

Tømmeraas K, Vårum KM, Christensen BE, and Smidsrød O

Carbohydrate research 333(2):137-44, 2001 Jul 3 - Who cited this? | PubMed ID: 11448674 | Fulltext

Chitosan as a nonviral gene delivery system. Structure-property relationships and characteristics compared with polyethylenimine in vitro and after lung administration in vivo.

+ cite this

+ View Abstract

Köping-Höggård M, Tubulekas I, Guan H, Edwards K, Nilsson M, Vårum KM, and Artursson P

Gene therapy 8(14):1108-21, 2001 Jul - Who cited this? | PubMed ID: 11526458 | Fulltext

Screening of chitosans and conditions for bacterial flocculation.

+ cite this

+ View Abstract

Strand SP, Vandvik MS, Vårum KM, and Østgaard K

Biomacromolecules 2(1):126-33, 2001 - Who cited this? | PubMed ID: 11749163 | Fulltext

Electrophoretic light scattering studies of chitosans with different degrees of N-acetylation.

+ cite this

+ View Abstract

Strand SP, Tømmeraas K, Vårum KM, and Østgaard K

Biomacromolecules 2(4):1310-4, 2001 - Who cited this? | PubMed ID: 11777408 | Fulltext

Chitosans as absorption enhancers of poorly absorbable drugs. 3: Influence of mucus on absorption enhancement.

+ cite this

+ View Abstract

Schipper NG, Vârum KM, Stenberg P, Ocklind G, Lennernäs H, and Artursson P

European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences 8(4):335-43, 1999 Aug - Who cited this? | PubMed ID: 10425384 | Fulltext

Quantitative studies of the non-productive binding of lysozyme to partially N-acetylated chitosans. Binding of large ligands to a one-dimensional binary lattice studied by a modified McGhee and von Hippel model.

+ cite this

+ View Abstract

Kristiansen A, Vårum KM, and Grasdalen H

Biochimica et biophysica acta 1425(1):137-50, 1998 Sep 16 - Who cited this? | PubMed ID: 9813287 | Fulltext

The interactions between highly de-N-acetylated chitosans and lysozyme from chicken egg white studied by 1H-NMR spectroscopy.

+ cite this

+ View Abstract

Kristiansen A, Vårum KM, and Grasdalen H

European journal of biochemistry / FEBS 251(1-2):335-42, 1998 Jan 15 - Who cited this? | PubMed ID: 9492302 | Fulltext

Chitosans as absorption enhancers for poorly absorbable drugs 2: mechanism of absorption enhancement.

+ cite this

+ View Abstract

Schipper NG, Olsson S, Hoogstraate JA, deBoer AG, Vårum KM, and Artursson P

Pharmaceutical research 14(7):923-9, 1997 Jul - Who cited this? | PubMed ID: 9244151 | Fulltext

In vitro degradation rates of partially N-acetylated chitosans in human serum.

+ cite this

+ View Abstract

Vårum KM, Myhr MM, Hjerde RJ, and Smidsrød O

Carbohydrate research 299(1-2):99-101, 1997 Mar 26 - Who cited this? | PubMed ID: 9129298 | Fulltext

Chitosans as absorption enhancers for poorly absorbable drugs. 1: Influence of molecular weight and degree of acetylation on drug transport across human intestinal epithelial (Caco-2) cells.

+ cite this

+ View Abstract

Schipper NG, Vårum KM, and Artursson P

Pharmaceutical research 13(11):1686-92, 1996 Nov - Who cited this? | PubMed ID: 8956335 | Fulltext

Determination of enzymatic hydrolysis specificity of partially N-acetylated chitosans.

+ cite this

+ View Abstract

Vårum KM, Holme HK, Izume M, Stokke BT, and Smidsrød O

Biochimica et biophysica acta 1291(1):5-15, 1996 Aug 29 - Who cited this? | PubMed ID: 8781519 | Fulltext

Competitive binding of highly de-N-acetylated chitosans and N,N'-diacetylchitobiose to lysozyme from chicken egg white studied by 1H NMR spectroscopy.

+ cite this

Kristiansen A, Vårum KM, and Grasdalen H

Carbohydrate research 289:143-50, 1996 Aug 19 - Who cited this? | PubMed ID: 8805778 | Fulltext

Characterization of binding and TNF-alpha-inducing ability of chitosans on monocytes: the involvement of CD14.

+ cite this

+ View Abstract

Otterlei M, Vårum KM, Ryan L, and Espevik T

Vaccine 12(9):825-32, 1994 Jul - Who cited this? | PubMed ID: 7526573 | Fulltext

Hydrodynamic characterization of chitosans varying in degree of acetylation.

+ cite this

+ View Abstract

Errington N, Harding SE, Vårum KM, and Illum L

International journal of biological macromolecules 15(2):113-7, 1993 Apr - Who cited this? | PubMed ID: 8485103 | Fulltext

Chitosan cross-linked with Mo(VI) polyoxyanions: a new gelling system.

+ cite this

+ View Abstract

Draget KI, Vårum KM, Moen E, Gynnild H, and Smidsrød O

Biomaterials 13(9):635-8, 1992 - Who cited this? | PubMed ID: 1391410 | Fulltext

13C-n.m.r. studies of the acetylation sequences in partially N-deacetylated chitins (chitosans).

+ cite this

+ View Abstract

Vårum KM, Anthonsen MW, Grasdalen H, and Smidsrød O

Carbohydrate research 217:19-27, 1991 Sep 18 - Who cited this? | PubMed ID: 1797401 | Fulltext

Determination of the degree of N-acetylation and the distribution of N-acetyl groups in partially N-deacetylated chitins (chitosans) by high-field n.m.r. spectroscopy.

+ cite this

+ View Abstract

Vårum KM, Anthonsen MW, Grasdalen H, and Smidsrød O

Carbohydrate research 211(1):17-23, 1991 Apr 2 - Who cited this? | PubMed ID: 1773428 | Fulltext

Search Google Scholar for Vårum KM

Join Labmeeting

Organize and search your PDF collection
Collect papers
Search millions of papers
Keep up to date with paper alerts
Read your papers from anywhere
Recommend papers to colleagues
Manage your lab

Labmeeting is a web service for researchers. Sign up with your academic email address.

Individuals or corporations not affiliated with an academic institution can request a trial subscription.

Got a question?
The Labmeeting Network
has the answer.
Ask scientists at top universities like Harvard, Stanford, and MIT for their expert opinion!