Search Results - (Author, Cooperation:Z. Harris)

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  1. 1
    Staff View
    Publication Date:
    2018-09-28
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Geosciences
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Genetics, Online Only
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2012-02-10
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Alleles ; Animals ; Centromere/genetics ; Chromosomes, Insect/genetics ; Drosophila melanogaster/*genetics ; *Genome-Wide Association Study ; *Genomics ; Genotype ; Phenotype ; Polymorphism, Single Nucleotide/genetics ; Quantitative Trait Loci/*genetics ; Selection, Genetic/genetics ; Starvation/genetics ; Telomere/genetics ; X Chromosome/genetics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Chamnongpol, Sangpen ; Dodson, Walter ; Cromie, Michael J. ; Harris, Z. Leah ; Groisman, Eduardo A.

    Oxford, UK : Blackwell Science Ltd
    Published 2002
    Staff View
    ISSN:
    1365-2958
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Medicine
    Notes:
    Because it can undergo reversible changes in oxidation state, iron is an excellent biocatalyst but also a potentially deleterious metal. Iron-mediated toxicity has been ascribed to Fe(II), which reacts with oxygen to generate free radicals that damage macromolecules and cause cell death. However, we now report that Fe(III) exhibits microbicidal activity towards strains of Salmonella enterica, Escherichia coli and Klebsiella pneumoniae defective in the Fe(III)-responding PmrA/PmrB signal transduction system. Fe(III) bound to a pmrA Salmonella mutant more effectively than to the isogenic wild-type strain and exerted its microbicidal activity even under anaerobic conditions. Moreover, Fe(III) permeabilized the outer membrane of the pmrA mutant, rendering it susceptible to vancomycin, which is normally non-toxic to Gram-negative species. On the other hand, Fe(III) did not affect the viability of a mutant defective in Fur, the major regulator of cytosolic iron homeostasis, which is hypersensitive to Fe(II)-mediated toxicity. A functional pmrA gene was necessary for bacterial survival in soil. Our results indicate that Fe(III) exerts its microbicidal activity by a mechanism that is oxygen independent and different from that mediated by Fe(II).
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  4. 4
    Ory, J.C. ; Harris, Z. ; Dueitt, S.B. ; Clark, D.L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0149-7189
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Medicine
    Psychology
    Sociology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses