Abstract
By treatment with EDTA, all transport reactions tested with succinate-grown cells of Agrobacterium tumefaciens were simultaneously reduced; the tested transports were mannose, fructose, glucose, ribose, rhamnose, leucine and proline entry reactions. To the EDTA-treated cells, a supplement of D-glucoside 3-dehydrogenase (G3DH) induced the simultaneous restoration in all of the entry transports, which were previously reduced, with different degrees in different transport reactions. The functions of G3DH for transport reaction was discussed. The conclusion was that G3DH is a common factor having two functions: (1) a member of the energy-supplying system which is selectively coupled with transport reactions, and (2) an effector on maintenance of membrane structure being proper status for transport reactions.
