label: L-methionyl-L-phenylalanyl-L-methionine(out) + H(+)(out) => L-methionyl-L-phenylalanyl-L-methionine(in) + H(+)(in)
label_lc: l-methionyl-l-phenylalanyl-l-methionine(out) + h(+)(out) => l-methionyl-l-phenylalanyl-l-methionine(in) + h(+)(in)