label: a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphocholine(out) + H(+)(out) = a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphocholine(in) + H(+)(in)
label_lc: a 1-o-(1z-alkenyl)-sn-glycero-3-phosphocholine(out) + h(+)(out) = a 1-o-(1z-alkenyl)-sn-glycero-3-phosphocholine(in) + h(+)(in)