BIOL 228 Lecture Notes - Lecture 14: Enterobacteriaceae, Acetoin, Erwinia
22 Dec 2017
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Document Summary
In eukaryotes, etc carriers are within inner mitochondrial membrane: electron transfer accompanied by pmf across inner mitochondrial membrane. In prokaryotes, etc carriers are within plasma membrane: prokaryotic etcs, located in plasma membrane, some resemble mitochondrial etc, but many are different: Different electron carriers, may be branched, may be shorter (which would result in less energy being released: operate using same fundamental principles as mitochondrial etc, aerobic electron transport chain of e. coli, branched pathway: Bd branch: stationary phase and low aeration. Has higher affinity for oxygen and moves fewer protons into periplasmic space. Bo branch: log phase and high aeration. Fadh2, gtp: electrons carried by nadh and fadh2 are passed through etc to terminal electron acceptor other than oxygen (ex. 2-, co2) production of atp: uses exogenous terminal electron acceptor other than o2; most commonly no3. 2-, co2: generally yields less energy because e0 of electron acceptor is less positive than. No3: use of nitrate as terminal electron acceptor.
