A compound attribute that is the ratio of amount of ATPase inhibitor, mitochondrial (human) in blood to amount of mitochondrial fission 1 protein (human) in blood. The trait is ATP5IF1/FIS1 protein level ratio in blood (OBA_2054124). Also known as: the ratio of amount of ATPase inhibitor, mitochondrial (human) in blood to amount of mitochondrial fission 1 protein (human) in blood.