PIK3AP1/PSMG3 protein level ratio in blood (OBA_2054007) can be described as follows. A compound attribute that is the ratio of amount of phosphoinositide 3-kinase adapter protein 1 (human) in blood to amount of proteasome assembly chaperone 3 (human) in blood. Also known as: the ratio of amount of phosphoinositide 3-kinase adapter protein 1 (human) in blood to amount of proteasome assembly chaperone 3 (human) in blood.