34 - LECTURE 34 ANNOUNCEMENTS 1. ASSIGNMENTS FOR THIS WEEK:...

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LECTURE 34 ANNOUNCEMENTS 1. ASSIGNMENTS FOR THIS WEEK: READING AND PROBLEMS AS IN LG. (NO PyMOL ASSIGNMENT (AFTER ATP SYNTHASE) UNTIL THE LAST WEEK OF CLASS) FRIDAY S LECTURE ELECTRON TRANSPORT via THE "RESPIRATORY CHAIN" RXNS AT COMPLEXES I, II, III, IV H + PUMPING: via PROTEIN STRUCTURAL CHANGE OR ELSE Q-CYCLE ROLE OF MOBILE e - CARRIERS IN/ON MEMBRANES: UQH2 AND Cyt c FAVORABLE G OF NADH OR FADH2 OXIDATION DRIVES H + & ∆ Ψ. EFFICIENT! TODAY ATP SYNTHASE MECHANISM INTRO TO PHOTOSYNTHESIS 2. OFFICE HRS, REVIEWS: NEXT WEEK, NO OFFICE HOURS OR REVIEWS; FOR THE LAST WEEK OF CLASS, NO CHANGES; FOR STUDY WEEK: ANY CHANGES IN OFFICE HOURS OR REVIEW SESSIONS WILL BE POSTED IN A FEW WEEKS 3. FINAL EXAM CONFLICT? SO FAR, ONLY 4 STUDENTS ARE TAKING THE MAKE-UP EXAM
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IN MUSCLE, BRAIN IN HEART, KIDNEY, LIVER BESIDES CoA, TWO OTHER KEY MOLECULES THAT NEVER CROSS MITOCHONDRIA MEMBRANES : NADH OXALOACETATE NADH IN THE CYTOSOL : HOW CAN IT DRIVE FORMATION OF A H + GRADIENT IN MITOCHONDRIA ?! GLYCOLYSIS OCCURS IN CYTOSOL, FORMS NADH U U
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THERMODYNAMICS OF THE CHEMIOSMOTIC MECHANISM H + H + MATRIX CYTOSOL G T = RTln [H + ] CYTOSOL [H + ] MATRIX + Z F ∆ Ψ G T = -2.303RT(pH CYTOSOL - pH MATRIX ) + Z F ∆ Ψ G T = + 3kJ/MOL + 14.5kJ/MOL = + 17.5kJ/ MOL TYPICAL VALUES: T = 310K pH CYTOSOL - pH MATRIX ~ - 0.5 ∆ Ψ ~ + 0.15V F = 96.5 kJ/V• mol R = 8.31J/K• mol NADH + H + + 1/2O 2 NAD + + H 2 0
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This note was uploaded on 01/01/2012 for the course BIOMG 3310 taught by Professor Feigenson during the Fall '11 term at Cornell University (Engineering School).

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34 - LECTURE 34 ANNOUNCEMENTS 1. ASSIGNMENTS FOR THIS WEEK:...

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