A compound attribute that is the ratio of amount of ATPase inhibitor, mitochondrial (human) in blood to amount of frataxin, mitochondrial (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2054125 (ATP5IF1/FXN protein level ratio in blood). Also known as: the ratio of amount of ATPase inhibitor, mitochondrial (human) in blood to amount of frataxin, mitochondrial (human) in blood.