OBA_2053033 (HMBS/PSMG3 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of porphobilinogen deaminase (human) in blood to amount of proteasome assembly chaperone 3 (human) in blood. Also known as: the ratio of amount of porphobilinogen deaminase (human) in blood to amount of proteasome assembly chaperone 3 (human) in blood.