Gluconeogenesis is regulated by its key enzymes like pyruvate
carboxylase which help in carboxylation of pyruvate to
oxaloacetate
Phosphoenolpyruvatekinase also help in dercarboxylation of
cystol oxaloacetate.
Fructose 1-6 bisphosphatase help in diphosphorylation of
fructose 1 , 6 bisphosphate . Glucose 6 phosphatase help in
diphosphorylation of glucose 6 phosphate.
So these 4 enzyme regulates gluconeogenesis in these rxns .
There are some other factors also who regulates gluconeogenesis
like hormones glucagon and epinephrine stimulates gluconeogenesis
by inducing the synthesis of the key enzymes and insulin inhibits
the gluconeogenesis by repressing their synthesis.