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Biology and Biochemistry

D-Index
50
Citations
10403
World Ranking
17546
National Ranking
7201

Overview

Timothy L. Karr is affiliated with Arizona State University in the United States. Their research primarily spans across the fields of Medicine, Biochemistry, Genetics and Molecular Biology, and Agricultural and Biological Sciences, with a substantial focus on Neurology, Insect Science, Infectious Diseases, Genetics, and Immunology.

The scientist's main topics of research include:

  • Insect symbiosis and bacterial influences
  • Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Sperm and Testicular Function
  • COVID-19 Clinical Research Studies
  • Folate and B Vitamins Research
  • Neurological Disease Mechanisms and Treatments
  • Neurological Disorders and Treatments

They have contributed to various publication venues, frequently publishing work in:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Aging Cell
  • Frontiers in Plant Science
  • Genes & Genetic Systems
  • EMBO Molecular Medicine

Notable recent papers authored or co-authored by Timothy L. Karr include:

  • Dietary choline intake is necessary to prevent systems-wide organ pathology and reduce Alzheimer's disease hallmarks (2023) - Aging Cell
  • Humanization and expression of IgG and IgM antibodies in plants as potential diagnostic reagents for Valley Fever (2022) - Frontiers in Plant Science
  • The Drosophila Neprilysin 4 gene is essential for sperm function following sperm transfer to females (2021) - Genes & Genetic Systems
  • A public resource of single cell transcriptomes and multiscale networks from persons with and without Alzheimer's disease (2023) - bioRxiv (Cold Spring Harbor Laboratory)
  • Viral anti-inflammatory serpin reduces immuno-coagulopathic pathology in SARS-CoV-2 mouse models of infection (2023) - EMBO Molecular Medicine

Collaboration has been a notable aspect of their research, with frequent co-authors including Junior A. Enow, Masmudur M. Rahman, Grant McFadden, Takashi Ohsako, and Machi Shirakami.

Best Publications

  • 16S rRNA phylogenetic analysis of the bacterial endosymbionts associated with cytoplasmic incompatibility in insects

    Scott L. O'Neill;Rosanna Giordano;Angela M. E. Colbert;Timothy L. Karr

  • Bidirectional incompatibility between conspecific populations of Drosophila simulans

    Scott Leslie O'Neill;Timothy Karr

  • The histone H3.3 chaperone HIRA is essential for chromatin assembly in the male pronucleus

    Benjamin Loppin;Emilie Bonnefoy;Caroline Anselme;Anne Laurençon

  • Organization of the cytoskeleton in early Drosophila embryos.

    T L Karr;B M Alberts

  • Interspecific and intraspecific horizontal transfer of Wolbachia in Drosophila

    Lee Boyle;Scott Leslie O'Neill;Scott Leslie O'Neill;Hugh Robertson;Timothy Karr

  • A newly discovered bacterium associated with parthenogenesis and a change in host selection behavior in parasitoid wasps

    E. Zchori-Fein;Y. Gottlieb;S. E. Kelly;J. K. Brown

  • Genomic and functional evolution of the Drosophila melanogaster sperm proteome

    Stephen Dorus;Scott A. Busby;Ursula Gerike;Jeffrey Shabanowitz

  • Stage-specific expression profiling of Drosophila spermatogenesis suggests that meiotic sex chromosome inactivation drives genomic relocation of testis-expressed genes.

    Maria D. Vibranovski;Hedibert F. Lopes;Timothy L. Karr;Manyuan Long

  • Cytological analysis of fertilization and early embryonic development in incompatible crosses of Drosophila simulans.

    Craig W. Lassy;Timothy L. Karr

  • The Drosophila melanogaster sperm proteome-II (DmSP-II).

    Elizabeth R. Wasbrough;Steve Dorus;Svenja Hester;Julie Howard-Murkin

  • Heads or tails: host-parasite interactions in the Drosophila-Wolbachia system.

    Zoe Veneti;Michael E. Clark;Timothy L. Karr;Charalambos Savakis

  • Offsetting Effects of Wolbachia Infection and Heat Shock on Sperm Production in Drosophila simulans: Analyses of Fecundity, Fertility and Accessory Gland Proteins

    Rhonda R. Snook;Sophia Y. Cleland;Mariana F. Wolfner;Timothy L. Karr

  • Widespread Prevalence of Wolbachia in Laboratory Stocks and the Implications for Drosophila Research

    Michael E. Clark;Cort L. Anderson;Jessica Cande;Timothy L. Karr

  • The Drosophila l(1)zw10 gene product, required for accurate mitotic chromosome segregation, is redistributed at anaphase onset.

    B C Williams;T L Karr;J M Montgomery;M L Goldberg

  • Genetic Analysis of Viable Hsp90 Alleles Reveals a Critical Role in Drosophila Spermatogenesis

    Lin Yue;Timothy L. Karr;Debra F. Nathan;Hewson Swift

  • Intracellular sperm/egg interactions in Drosophila: a three-dimensional structural analysis of a paternal product in the developing egg.

    Timothy L. Karr

  • Organization of Wolbachia pipientis in the Drosophila fertilized egg and embryo revealed by an anti-Wolbachia monoclonal antibody.

    Hiroyuki Kose;Timothy L. Karr;Timothy L. Karr

  • Cytoplasmic incompatibility and sperm cyst infection in different Drosophila-Wolbachia associations.

    Zoe Veneti;Michael E. Clark;Sofia Zabalou;Timothy L. Karr

  • Characterization of brain microtubule proteins prepared by selective removal of mitochondrial and synaptosomal components.

    T L Karr;H D White;D L Purich

  • Wolbachia distribution and cytoplasmic incompatibility during sperm development: the cyst as the basic cellular unit of CI expression.

    Michael E Clark;Zoe Veneti;Kostas Bourtzis;Timothy L Karr

Frequent Co-Authors

Rhonda R. Snook
Rhonda R. Snook Stockholm University
Scott Leslie O'Neill
Scott Leslie O'Neill Monash University
Thomas B. Kornberg
Thomas B. Kornberg University of California, San Francisco
Yong Zhang
Yong Zhang Chinese Academy of Sciences
Manyuan Long
Manyuan Long University of Chicago
Hugh M. Robertson
Hugh M. Robertson University of Illinois at Urbana-Champaign
Martin E. Feder
Martin E. Feder University of Chicago
Sudhir Kumar
Sudhir Kumar Temple University
Mariana F. Wolfner
Mariana F. Wolfner Cornell University

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