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