Biology 3400 - Lecture 7

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  1. Small molecule (catabolite) in lac repression?
    Glucose
  2. Small molecule in Npr repression?
    a-ketoglutyrate
  3. Small molecule inducer in lac
    cAMP
  4. Che(x) protein functions
    • MCP - Transmembrane kinase
    • W-A - First component (phos)
    • B - P, demethylates MCP
    • Y - P, Binds to flagellar switch
  5. Attractants increase/decrease
    Run(ccw)/tumble(cw)
  6. Quorum sensing (incl. molecule)
    • Chemical detection of presence of same bacteria
    • Acyl homoserine lactone
  7. Sporulation in bacillus
    • Sigma factors used in crosstalk
    • (F, E) - Endospore
    • (G, K) - Mother cell
  8. Uses of quorum sensing
    • Bioluminescence (aliivibrio fischeri)
    • Toxin production (e. coli)
    • Biofilm (pseudomonas aeruginosa)
    • Sporulation (bacillus)
    • Differention (caulobacter)
  9. Swarmer and stalked cells
    • Quorum sensing - Differentiation
    • Swarmer - Dispersal
    • Stalked - Reproduction
  10. Types of regulatory RNA
    • RBS blocking
    • Antisense - From nontemplate DNA, multiple sites, can enhance translation

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Author:
Ant
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317109
Filename:
Biology 3400 - Lecture 7
Updated:
2016-03-09 20:48:21
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Biology
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Biology 3400 Lecture 7
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