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lecture_24__pts_and_carbon_regulation

lecture_24__pts_and_carbon_regulation - ReadingChapter16...

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PTS and carbon regulation and a quickie on transport Reading Chapter 16
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Types of transport Primary Transport: driven by an energy producing (exergonic)metabolic event , proton translocation driven by ATP, light driven transport etc. Secondary Transport: driven by electrochemical gradients, i.e. proton or sodium grandients
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Secondary transport Inside Outside + Uniport H + Symport H + S Antiport H + S Use established electrochemical gradients: proton or ion gradients
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Primary Transport ATPase driven proton pumps “ABC” transport or Shock sensitive transport
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“ABC” transporters or Shock sensitive transporters Composed of a membrane transporter and a Periplasmic binding protein OM IM Periplasm
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OM IM Periplasm Periplasmic binding protein finds substrate PBP binds the substrate PBP delivers the substrate to the translocation complex ATP hydrolysis brings the substrate into the cell ATP ADP + P i
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Group Transport: Concept: bring sugars and related compounds into the cell and traps them by phosphorylation as they enter
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