The exact mechanism of transport is not known; however, findings indicate that ATP binding to TAP-1 is the initial step in the transport process, and that ATP bound to TAP-1 induces ATP binding in TAP-2.
O mecanismo exacto do transporte non se coñece; porén, os descubrimentos realizados indican que a unión do ATP a TAP-1 é o paso inicial no proceso de transporte, e que o ATP unido a TAP-1 induce a unión de ATP a TAP-2.