label: trans-4-hydroxy-L-proline + a quinone <=> (3R,5S)-1-pyrroline-3-hydroxy-5-carboxylate + a quinol + H(+)
label_lc: trans-4-hydroxy-l-proline + a quinone <=> (3r,5s)-1-pyrroline-3-hydroxy-5-carboxylate + a quinol + h(+)