Erythropoietin (EPO)
Erythropoietin (EPO) is a glycoprotein hormone produced in the kidney. EPO promotes red blood cell production. A single gene located in chromosome 7 regulates the production of erythropoietin, which primarily takes place in the kidneys. Approximately 10 % of erythropoietin is synthesized in the liver and other extra-renal organs.
Figure 1. Details of EPO. To view the image bigger, you can see it here.