preferred_name: L-isoleucine(in) + H(+)(out) <=> L-isoleucine(out) + H(+)(in)
preferred_name_lc: l-isoleucine(in) + h(+)(out) <=> l-isoleucine(out) + h(+)(in)
label: L-isoleucine(in) + H(+)(out) <=> L-isoleucine(out) + H(+)(in)
label_lc: l-isoleucine(in) + h(+)(out) <=> l-isoleucine(out) + h(+)(in)