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1Lecture 7Lecture 7•Prokaryotic Cell EnvelopesBBOM 11e Sec. 4.8-4.9, 11.9•Virtual Field Trip ÆMicrobial Motility Movies•Introduction to Microbial Motility and ChemotaxisBBOM 11e Sec. 4.14, 4.16Integral Membrane proteins: Transport•Three classes of membrane transport systems: •Three classes of membrane transport systems: Simple transportGroup translocationABC systemEnergy from ATP(e.g Uniporters, symporters, antiporters)(e. g. phoshotransferase system)(e.g. sugar transport systems)Function: Move small moleculesacross phospholipid permeability barrier against a concentration gradient; energy is requiredBBOM 11e Sec. 4.6-4.7ATP Binding CassetteEnergy from PMFEnergy from PEP
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