glycolysis Flashcards
location
- cytoplasm
catabolism
- break down of compound
-ve delta G
exergonic
!oxidation!
anabolism
- synthesis of compounds
+ve delta G
endergonic
!reduction!
reducing agent used by anabolic pathways
NADPH
3 possible products of glycolysis
- pyruvate (aerobic)
- lactate (anaerobic)
- Ribose -5- phosphate
disaccharide + bond features
- 2 monosaccharides
glycosidic bond - alpha/beta
Glucose requiring organs + GLUT transporter
brain - GLUT 1+3
erythrocytes
retina
real medulla
GLUT 2 + GLUT 4 tissue types + features
GLUT 4 = fat + adipose, low Km
GLUT 2 = liver, high Km
Glucose -> pyruvate, intermediates
Glucose -> glucose 6 phosphate ->
fructose 6 phosphate -> fructose 1,6-bisphosphate -> Pyruvate
Catalyst Glucose -> Glucose 6 phosphate
hexokinase
Inhibiters hexokinase
Glucose 6 phosphate
Glucose 6 phosphate -> fructose 6 phosphate catalyst
phosphoglucose isomerase
catalyst Fructose 6 phosphate -> 1,6 bisphosphate
phosphofructokinase
Inhibition of Phosphofructokinase (PFK)
- ATP, H+, Citrate
Activation of phosphofructokinase
- AMP
Products of glycolysis
2 x pyruvate
4 ATP (-2ATP used)
2 NADH
Cell = fully charged
all adenylate in ATP form
Cell = fully discharged
all adenylate in AMP form
Warburg Effect
- Cancer uses glycolysis to support growth + provide biosynthetic molecules
- Increases glucose demand (weight loss)
- Inefficient
- Lactate produced
treatment of Warburg effect
- glycolysis inhibitors
2 deoxy glucose dichloroacetate