Different pathways for fructose and glucose utilization in Rhodopseudomonas capsulata and demonstration of 1-phosphofructokinase in phototrophic bacteria.
Rhodopseudomonas capsulata Kb1 utilizes glucose via the Entner-Doudoroff pathway and fructose via the Embden-Meyerhof pathway. In this bacterium, 1-phosphofructokinase (EC 2.7.1.56) is the key enzyme of the Embden-Meyerhof pathway and is induced by fructose but not by glucose. This enzyme could also be demonstrated in various species of phototrophic bacteria after growth in fructose-salts medium.