(center map)
(1) succinate@mitochondrial intermembrane space - VDAC*@mitochondrial outer membrane -t-> succinate
(2) HIF1A+O_sub_2_endsub_+2-oxoglutarate - succinate - fumarate - Fe_super_2+_endsuper_:PHD* - OS9 -> HIF1A|P564_hyd+succinate+CO_sub_2_endsub_
(3) HIF1A+O_sub_2_endsub_+2-oxoglutarate - succinate - fumarate - Fe_super_2+_endsuper_:PHD* - OS9 -> HIF1A|P564_hyd+succinate+CO_sub_2_endsub_