Here is your challenge (take a breath, relax, and be on the lookout for additional cytosolic isozymes you might not expect). glutamate to ribose 5 phosphate (easy)
No a ketoglutarate dehydrogenase (uh oh)
No pyruvate carboxylase (oh no)
No transketolase (hmmm)
No transaminase (ACK!)
You do get to have if needed:
erythrose 4 phosphate
asparate
dihydroxyacetone phosphate
bicarbonate
ATP
ornithine
CO2
Starting with glutamate