Ser22-Leu195, with C-terminal His Tag.
25-33 kDa (Reducing)
Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.
· 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.
· 3 months, -20 to -80℃ under sterile conditions after reconstitution.
· 1 week, 2 to 8℃ under sterile conditions after reconstitution.
· Please avoid repeated freeze-thaw cycles.
N Engl J Med. 1998 Sep 10;339(11):746-54.
Thrombopoietin (TPO) is a glycoprotein hormone that plays a crucial role in the regulation of platelet production and megakaryocyte differentiation. The human TPO protein consisting of 174 amino acids is primarily produced in the liver and kidneys. TPO acts by binding to its receptor, the c-Mpl receptor, which is expressed on the surface of hematopoietic stem cells and megakaryocytic progenitor cells. Upon binding, TPO activates signaling pathways that promote the proliferation and differentiation of megakaryocytes, leading to increased platelet production. TPO is essential for maintaining normal platelet levels in the blood and is a key regulator of thrombopoiesis.
Measured in a cell proliferation assay using MO7e human megakaryocytic leukemic cells. The EC50 for this effect is less than 0.5ng/ml.
2μg (R: reducing condition, N: non-reducing condition).
>90% as determined by SEC-HPLC.