for met in metabolic_participants:
            met_species_type = model.species_types.get_one(id=met)
            metabolites[met] = {
                'c': met_species_type.species.get_or_create(compartment=cytoplasm, model=model),
                'm': met_species_type.species.get_or_create(compartment=mitochondrion, model=model)