Pentose Phosphate Pathway: Reversible Portion Flashcards
What is the purpose of the PPP (reversible) for the Liver only
Uses Ribose 5P for nucleotide synthesis
What is the rxn of the PPP (reversible) for the Liver only
Ribulose 5P + Ribulose 5P —> Xylulose 5P + Ribose 5P
What are the nucleotides in the Liver only
ATP, GTP, CTP, TTP, UTP, NAD+, FAD, NADP+
What is the purpose of the PPP (reversible) for RBC
Fructose 6P and Glyceraldehyde 3P to renter glycolysis
In RBC:
Finish the rxn: Ribulose 5P + Ribulose 5P —>
Xylulose 5P + Ribose 5P (epimerase and isomerase)
In RBC:
Finish the rxn: Xylyulose 5P + Ribose 5P —->
Glyceraldehyde 3P + Sedoheptulose 7P (Transketolase)
In RBC:
Finish the rxn: Glyceraldehyde 3P + Sedoheptulose 7P —->
Fructose 6P + Erythrose 4P (transaldolase)
In RBC:
Finish the rxn: Erythrose 4P + Ribulose 5P —–>
Glyceraldehyde 3P + Fructose 6P
What rxn re-enters glycolysis
Glyceraldehyde 3P + Fructose 6P
What are the pentose sugars found in the RBC and what type of enzyme do they require?
Erythrose 4P
Xlylulose 5P
Sedoheptulose 7P
Transaldolase