preferred_name: pyruvate(in) + H(+)(in) => pyruvate(out) + H(+)(out)
preferred_name_lc: pyruvate(in) + h(+)(in) => pyruvate(out) + h(+)(out)
label: pyruvate(in) + H(+)(in) => pyruvate(out) + H(+)(out)
label_lc: pyruvate(in) + h(+)(in) => pyruvate(out) + h(+)(out)