Kristen M. Johansen Department of Biochemistry, Biophysics, and Molecular Biology Iowa State University Biography Publications Institution JoVE Articles Kristen M. Johansen has not added a biography. If you are Kristen M. Johansen and would like to personalize this page please email our Author Liaison for assistance. Publications The Epigenetic H3S10 Phosphorylation Mark is Required for Counteracting Heterochromatic Spreading and Gene Silencing in Drosophila Melanogaster Journal of Cell Science. Dec, 2011 | Pubmed ID: 22247192 The Chromodomain-containing NH(2)-terminus of Chromator Interacts with Histone H1 and is Required for Correct Targeting to Chromatin Chromosoma. Dec, 2011 | Pubmed ID: 22203189 A Balance Between Euchromatic (JIL-1) and Heterochromatic [SU(var)2-5 and SU(var)3-9] Factors Regulates Position-effect Variegation in Drosophila Genetics. Jul, 2011 | Pubmed ID: 21515582 Do Nuclear Envelope and Intranuclear Proteins Reorganize During Mitosis to Form an Elastic, Hydrogel-like Spindle Matrix? Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology. Apr, 2011 | Pubmed ID: 21274615 JIL-1 and Su(var)3-7 Interact Genetically and Counteract Each Other's Effect on Position-effect Variegation in Drosophila Genetics. Aug, 2010 | Pubmed ID: 20457875 Phosphorylation of SU(VAR)3-9 by the Chromosomal Kinase JIL-1 PloS One. 2010 | Pubmed ID: 20386606 Asator, a Tau-tubulin Kinase Homolog in Drosophila Localizes to the Mitotic Spindle Developmental Dynamics : an Official Publication of the American Association of Anatomists. Dec, 2009 | Pubmed ID: 19890914 The Spindle Matrix Through the Cell Cycle in Drosophila Fly. Jul-Sep, 2009 | Pubmed ID: 19690461 Chromator is Required for Proper Microtubule Spindle Formation and Mitosis in Drosophila Developmental Biology. Oct, 2009 | Pubmed ID: 19632217 Spatiotemporal Control of Mitosis by the Conserved Spindle Matrix Protein Megator The Journal of Cell Biology. Mar, 2009 | Pubmed ID: 19273613 Polytene Chromosome Squash Methods for Studying Transcription and Epigenetic Chromatin Modification in Drosophila Using Antibodies Methods (San Diego, Calif.). Aug, 2009 | Pubmed ID: 19272452 The COOH-terminal Domain of the JIL-1 Histone H3S10 Kinase Interacts with Histone H3 and is Required for Correct Targeting to Chromatin The Journal of Biological Chemistry. Nov, 2008 | Pubmed ID: 18819909 RNA Polymerase II-mediated Transcription at Active Loci Does Not Require Histone H3S10 Phosphorylation in Drosophila Development (Cambridge, England). Sep, 2008 | Pubmed ID: 18667461 Chromatin Structure and the Regulation of Gene Expression: the Lessons of PEV in Drosophila Advances in Genetics. 2008 | Pubmed ID: 18282501 Ectopic Histone H3S10 Phosphorylation Causes Chromatin Structure Remodeling in Drosophila Development (Cambridge, England). Feb, 2008 | Pubmed ID: 18199578 Cell and Molecular Biology of the Spindle Matrix International Review of Cytology. 2007 | Pubmed ID: 17725967 Reduced Levels of Su(var)3-9 but Not Su(var)2-5 (HP1) Counteract the Effects on Chromatin Structure and Viability in Loss-of-function Mutants of the JIL-1 Histone H3S10 Kinase Genetics. Sep, 2007 | Pubmed ID: 17660558 Titin in Insect Spermatocyte Spindle Fibers Associates with Microtubules, Actin, Myosin and the Matrix Proteins Skeletor, Megator and Chromator Journal of Cell Science. Jul, 2007 | Pubmed ID: 17591688 Loss-of-function Alleles of the JIL-1 Histone H3S10 Kinase Enhance Position-effect Variegation at Pericentric Sites in Drosophila Heterochromatin Genetics. Jun, 2007 | Pubmed ID: 17435241 The Lamin Dm0 Allele Ari3 Acts As an Enhancer of Position Effect Variegation of the Wm4 Allele in Drosophila Genetica. Mar, 2007 | Pubmed ID: 16897461 Regulation of Chromatin Structure by Histone H3S10 Phosphorylation Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology. 2006 | Pubmed ID: 16821135 The Chromodomain Protein, Chromator, Interacts with JIL-1 Kinase and Regulates the Structure of Drosophila Polytene Chromosomes Journal of Cell Science. Jun, 2006 | Pubmed ID: 16723739 Loss-of-function Alleles of the JIL-1 Kinase Are Strong Suppressors of Position Effect Variegation of the Wm4 Allele in Drosophila Genetics. Aug, 2006 | Pubmed ID: 16702418 Mapping the Ca2+ -dependent Binding of an Invertebrate Homolog of Protein Phosphatase 4 Regulatory Subunit 2 to the Small EF-hand Protein, Calsensin Biochimica Et Biophysica Acta. Mar, 2006 | Pubmed ID: 16600403 The JIL-1 Histone H3S10 Kinase Regulates Dimethyl H3K9 Modifications and Heterochromatic Spreading in Drosophila Development (Cambridge, England). Jan, 2006 | Pubmed ID: 16339185 JIL-1 Kinase, a Member of the Male-specific Lethal (MSL) Complex, is Necessary for Proper Dosage Compensation of Eye Pigmentation in Drosophila Genesis (New York, N.Y. : 2000). Dec, 2005 | Pubmed ID: 16307450 The JIL-1 Kinase Interacts with Lamin Dm0 and Regulates Nuclear Lamina Morphology of Drosophila Nurse Cells Journal of Cell Science. Nov, 2005 | Pubmed ID: 16254246 The JIL-1 Kinase Regulates the Structure of Drosophila Polytene Chromosomes Chromosoma. Aug, 2005 | Pubmed ID: 15986206 EAST Interacts with Megator and Localizes to the Putative Spindle Matrix During Mitosis in Drosophila Journal of Cellular Biochemistry. Aug, 2005 | Pubmed ID: 15962301 Solution Structure and Backbone Dynamics of Calsensin, an Invertebrate Neuronal Calcium-binding Protein Protein Science : a Publication of the Protein Society. Jul, 2005 | Pubmed ID: 15937283 D-Hillarin, a Novel W180-domain Protein, Affects Cytokinesis Through Interaction with the Septin Family Member Pnut Journal of Neurobiology. Aug, 2005 | Pubmed ID: 15818553 Chromator, a Novel and Essential Chromodomain Protein Interacts Directly with the Putative Spindle Matrix Protein Skeletor Journal of Cellular Biochemistry. Nov, 2004 | Pubmed ID: 15389869 Megator, an Essential Coiled-coil Protein That Localizes to the Putative Spindle Matrix During Mitosis in Drosophila Molecular Biology of the Cell. Nov, 2004 | Pubmed ID: 15356261 Leech Filamin and Tractin: Markers for Muscle Development and Nerve Formation Journal of Neurobiology. Sep, 2004 | Pubmed ID: 15281074 Studying Nuclear Organization in Embryos Using Antibody Tools Methods in Molecular Biology (Clifton, N.J.). 2004 | Pubmed ID: 14707349 Genetic and Phenotypic Analysis of Alleles of the Drosophila Chromosomal JIL-1 Kinase Reveals a Functional Requirement at Multiple Developmental Stages Genetics. Nov, 2003 | Pubmed ID: 14668387 A Developmentally Regulated Splice Variant from the Complex Lola Locus Encoding Multiple Different Zinc Finger Domain Proteins Interacts with the Chromosomal Kinase JIL-1 The Journal of Biological Chemistry. Mar, 2003 | Pubmed ID: 12538650 Proteolytic Cleavage of the Ectodomain of the L1 CAM Family Member Tractin The Journal of Biological Chemistry. Feb, 2003 | Pubmed ID: 12446717 Recent Glimpses of the Elusive Spindle Matrix Cell Cycle (Georgetown, Tex.). Sep-Oct, 2002 | Pubmed ID: 12461290 Preparation of Drosophila Polytene Chromosome Squashes for Antibody Labeling Weili Cai1, Ye Jin1, Jack Girton1, Jorgen Johansen1, Kristen M. Johansen1 1Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University JoVE 1748 Biology
Preparation of Drosophila Polytene Chromosome Squashes for Antibody Labeling Weili Cai1, Ye Jin1, Jack Girton1, Jorgen Johansen1, Kristen M. Johansen1 1Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University JoVE 1748 Biology