人促血小板生成素重組蛋白是在大腸桿菌中重組表達的，是一條單鏈、非糖基化的多肽鏈，包含有174個氨基酸，分子量為18608Da，其中就包含了Mp1-配體蛋白的受體結合域。

Thrombopoietin is a glycoprotein hormone produced mainly by the liver and the kidney that regulates the production of platelets by the bone marrow. It stimulates the production and differentiation of megakaryocytes，the bone marrow cells that fragment into large numbers of platelets

TPO is a lineage specific growth factor, produced in the liver, kidney and skeletal muscle. It stimulates the proliferation and maturation of megakaryocytes, and promotes increased circulating levels of platelets in vivo. TPO signals through the c-mpl receptor and acts as an important regulator of circulating platelets. Human and murine TPO exhibits cross-species reactivity. Recombinant human TPO is a fully biologically active 174 amino acid polypeptide (18.6 kDa), which contains the erythropoietin-like domain of the full length TPO protein.

HumanZyme始建于2005年。世界上首家從人細胞生產人類逼真蛋白的知名公司。產品包括：人源化的細胞因子、及相關的抗體、人源化的重組白蛋白、和樹突細胞培養試劑盒。產品行銷到世界各地，產品受到廣泛的好評。HumanZyme利用自己的專利技術，突破了人細胞宿主表達人類蛋白低的瓶頸，研制成了既能貼壁生長又能懸浮培養的細胞系。這不僅可以供應實驗室規模量，而且可以大規模GMP生產，以滿足臨床前和臨床需求。HumanZyme?是獨家可以提供無動物源污染 和無異源蛋白污染 的公司。

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