Part of the ABC transporter complex YtfQRT-YjfF involved in galactofuranose transport. Responsible for energy coupling to the transport system. ATP + D-galactofuranose(out) + H2O = ADP + D-galactofuranose(in) + H(+) + phosphate The complex is composed of two ATP-binding proteins (YtfR), two transmembrane proteins (YtfT and YjfF) and a solute-binding protein (YtfQ). Belongs to the ABC transporter superfamily.