Carpaneto, A., Geiger, D., Bamberg, E., Sauer, N., Fromm, J., & Hedrich, R. (2005). Phloem-localized, Proton-coupled Sucrose Carrier ZmSUT1 Mediates Sucrose Efflux under the Control of the Sucrose Gradient and the Proton Motive Force. The Journal of Biological Chemistry, 280(22), 21437-21443.