Pentose Phosphate Pathway on the MCAT MedLife Mastery HMP also known as the Pentose phosphate pathway. Consists of two irreversible oxidative rxs followed by a series of reversible Pentose phosphate pathway: phases, reactions, & metabolic roles HMP Shunt (Pentose Pathway) Glucose 1 phosphate promotes compartmentalization of glycogen with the pentose phosphate pathway in CD8+ memory T cells: Molecular Cell Pentose Phosphate Pathway (PPP), Purine and Pyrimidine Metabolism Cell Biology, Genetics, and Biochemistry for Pre Clinical Students