Xanthine reversible transport
xan_e ⇌ xan_c
(-1000000.0, 1000000.0)
0.0
PVX_081595 or PVX_089140 or PVX_083260 or PVX_116995
PVX_083260
PVX_081595
PVX_089140
PVX_116995