D-xylulose 5-phosphate + phosphate = acetyl phosphate + D-glyceraldehyde 3-phosphate + H2O Homohexamer. Induced by sugars that are fermented by the phosphoketolase pathway (PKP) and repressed by glucose mediated by carbon catabolite protein A and by the mannose phosphoenolpyruvate phosphotransferase system. Belongs to the XFP family.