From the statistics page, I found that the Module-M00008 is present only in bacteria and not Eukaryotes. Why so? I noticed that all the compounds necessary or the reaction are present in human body and also all the enzymes required for the reactions are present in human body too. Then why does that reaction not happen in humans?
That module represents Entner-Duodoroff pathway, which is an alternative pathway to the Embden-Mayerhof-Parnas pathway of glycolysis.
Entner-Duordoff pathway exists only in prokaryotes.