Bacterial Catabolism - PowerPoint PPT Presentation

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Bacterial Catabolism

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Bacterial Catabolism Introduction Glycolysis Bacterial Catabolism Introduction Catabolic activities include the break down of glucose to release energy in form of ATP ... – PowerPoint PPT presentation

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Title: Bacterial Catabolism


1
Bacterial Catabolism
  • Introduction
  • Glycolysis

2
Bacterial Catabolism
  • Introduction
  • Catabolic activities include the break down of
    glucose to release energy in form of ATP
  • Reactions include three pathways
  • Glycolysis
  • Krebs Cycle
  • Oxidative Phosphorylation (Electron Transport)
  • Alternative pathways

3
Bacterial Catabolism
  • Glycolysis - Includes
  • Activation
  • Oxidation
  • ATP Synthesis
  • NADH2 Production

4
Bacterial Catabolism
  • Glycolysis
  • splitting of sugar
  • Glucose to pyruvate
  • Substrate phosphorylation
  • 10 reactions / two phases
  • Activation
  • Energy Production
  • Evolution - probably oldest

5
Bacterial Catabolism
6
Bacterial Catabolism
Activation of glucose by ATP
7
Bacterial Catabolism
Activate with second ATP
8
Bacterial Catabolism
Split sugar into 2 x 3C molecules
9
Bacterial Catabolism
Oxidation and phosphate addition
10
Bacterial Catabolism
ATP made at substrate level from 1,3-PGA
11
Bacterial Catabolism
12
Bacterial Catabolism
13
Bacterial Catabolism
Second ATP made from PEP
14
Bacterial Catabolism
  • Summary of glycolysis
  • 1 Glucose to 2 pyruvate
  • 2 NADH2 produced
  • 2 ATP consumed
  • 2 ATP for each 3C molecule produced
  • Net yield of 2 ATP

15
Bacterial Catabolism
  • Anaerobic Fermentation
  • NADH2 must be recycled for glycolysis to continue
    to produce ATP
  • Pyruvate to lactate
  • Pyruvate to ethanol CO2
  • Pyruvate to propionate

16
Bacterial Catabolism
17
Bacterial Catabolism
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