Notes
Slide Show
Outline
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EB1 proteins in Arabidopsis
  • A colorful overview
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The Cytoskeleton
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Cytoskeletal Functions Include:
  • Determination of cell shape
  • Cell Division
  • Cell Elongation
  • Organelle movement
  • Cell signaling


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EB1 family proteins
  • Evolutionarily conserved
  • Functions
    • + end microtubule (MT) binding
    • Centrosome binding in animals cells
    • MT dynamics and organization
  • EB1 in Arabidopsis
    • 3 homologs: EB1a (831 base pairs)
          • EB1b (882 bp)
      • EB1c (990 bp)

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EB1 Protein Structure
  • Structure
    • Calponin homology (CH) domain
      • MT binding domain
    • C-terminal motif
      • Long acidic tail, different from all other EB1 proteins
      • Binding domain for additional protein?
        • APC/p150glued /actin
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Purpose
  • Gain familiarity with basic lab techniques
  • Develop a MT reporter to study the dynamics of the cytoskeleton
    • Fusions with GFP, YFP, and CFP
  • Truncated versions
    • Binding domain
  • Probe the significance of the CH domain
    • Interaction with actin?

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Techniques and Basic Procedures
  • PCR-based cDNA cloning
  • E. coli transformation with fusion constructs
  • Transient expression in tobacco
    • Leaf bombardment
  • Fluorescent imaging with the confocal microscope


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Full Length EB1a
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Full Length EB1a cont.
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Full Length EB1a cont.
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Full Length EB1b
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Full Length EB1b cont.
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Full Length EB1b cont.
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Full Length EB1b cont.
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Full Length EB1c
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Truncated EB1s
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Comparing MT Reporters
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Actin-MT Co-visualization
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Co-visualization cont.
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EB1b and Fimbrin
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Future Endeavors
  • Create stable Arabidopsis lines expressing the different fusions
  • Study MT dynamics in stable, transformed cells
  • Better co-visualization with actin


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Acknowledgements and Multiple Thank-Yous
  • The Noble Foundation
  • Steve Rhines
  • Sue
  • Elison
  • Christy
  • Cheolmin
  • Brittany
  • Rex and Fuzzy IV