. "\"Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported together in the same direction in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy.\" [GOC:mtg_transport, ISBN:0815340729, PMID:10839820]" . . "symporter activity" . . "symport" . "porter activity" . "cotransporter activity" .