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ATP tutorial Class notes Physiology Of Microorganisms Brock Biology of Microorganisms plus Pearson Mastering Microbiology with Pearson eText, Global Edition, ISBN: 9781292235226$4.02
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ATP tutorial Class notes Physiology Of Microorganisms Brock Biology of Microorganisms plus Pearson Mastering Microbiology with Pearson eText, Global Edition, ISBN: 9781292235226
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Course
Physiology Of Microorganisms
Institution
Radboud Universiteit Nijmegen (RU)
Book
Brock Biology of Microorganisms plus Pearson Mastering Microbiology with Pearson eText, Global Edition
This document covers one of the lectures given during a tutorial about ATP.
Summary of lectures Microbiology of Aquatic Ecosystems
Cell Biology Human Microbiome
Class notes Central Carbon Metabolism: Physiology Of Microorganisms Brock Biology of Microorganisms plus Pearson Mastering Microbiology with Pearson eText, Global Edition, ISBN: 9781292235226
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Radboud Universiteit Nijmegen (RU)
Bachelor Biology
Physiology Of Microorganisms
All documents for this subject (4)
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ATP TUTORIAL
THE CELL’S ENERGY CYCLE
ATP GENERATION VS ATP CONSUMPTION
- Aerobic respiration - Chemical work
- Anaerobic respiration - Transport work
- Fermentation - Mechanical work
- Chemolithotrophy
- Phototrophy
- Transport work
ATP ENERGY RICH COMPOUND
- ATP as E currency
- High phosphoryl transfer potential: tendency of an organic molecule to transfer a P group to
an acceptor molecule
- Thermodynamically unfavourable reaction can be converted into a favourable reaction by
coupling it to hydrolysis of the sufficient number of ATPs
- Anhydride bonds act like a coil
- Storage of E
- The bond itself is not special, breakage releases E bc of the chemical/structural properties of
the bond
- ADP is more stable than ATP
Other energy rich compounds: PEP, 1,3-bisphosphate, acetyl-P, acetyl-CoA
DEFINITION: SYNTHESIS OF ATP FROM ADP BY PHOSPHORYLATION COUPLED WITH THE EXERGONIC
BREAKDOWN OF A HIGH ENERGY ORGANIC MOLECULE WITH A HIGHER PHOSPHORYL TRANSFER
TENDENCY THAN ATP
1. E from the oxidation of GAP with NAD+ as electron acceptor is used to add a P group to GAP
2. Generation of the E rich compound with a higher P transfer potential tendency, 1,3-
bisphosphoglycerate
3. Redox reaction is coupled to E incorporation, free E is trapped in E rich molecule
4. Substrate level phosphorylation: 1,3-bisphosphoglycerate has a higher P transfer potential tendency
than ATP, the P group is transferred onto ADP to form ATP (reversible reaction)
OXIDATIVE PHOSPHORYLATION
DEFINITION: ELECTRON TRANSPORT INITATED BY THE OXIDATION OF CHEMICAL COMPOUND
- Charge separation leads to the built-up of the membrane potential (pmf)
- Proton motive force is used for ATP synthesis by ATP-synthase
PHOTOPHOSPHORYLATION
DEFINITION: THE SYNTHESIS OF ATP FROM ADP USING E MADE AVAILABLE DURING ELECTRON
TRANSPORT INITIATED BY THE ABSORPTION OF LIGHT E
AUTOTROPHIC PHOTOPHOSPHORYLATION
- The energy for ATP production comes from the light
- Carbon source is CO2
- Two types:
o Oxygenic (donor water to generate NADP for CO2 fixation)
o Anoxygenic (donor something else than water, no O2 production)
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