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TPO (Thrombopoietin) is the primary regulator of megakaryocyte production and platelet formation, and also plays a fundamental role in HSC maintenance and expansion. In HSC culture, TPO promotes HSC quiescence, self-renewal, and long-term repopulating capacity. In iPSC-derived hematopoiesis, TPO acts at later stages of hematopoietic progenitor maturation and supports the maintenance of multipotent progenitors with engraftment potential.
GMP Human Thrombopoietin Protein (GMP-THNH25) is expressed from human 293 cells (HEK293). It contains AA Ser 22 - Gly 353 (Accession # P40225-1).

This protein carries no "tag".
The protein has a calculated MW of 35.5 kDa. The protein migrates as 75 kDa±5 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Ser-Pro-Ala-Pro-Pro-Ala-Cys-Asp-Leu-Arg-Val-Leu-Ser-Lys-Leu
(Routinely tested)
Less than 10 EU/mg, tested by the LAL method in compliance with USP <85> and Ph. Eur. 2.6.14.
<0.5 ng/µg of protein tested by ELISA.
<0.02 ng/μg of protein tested by qPCR.
Sterility testing was performed using the membrane filtration method in compliance with USP <71> and Ph. Eur. 2.6.1.
Negative
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in 20 mM NaAc-HAc, pH5.0 with protectants.
Contact us for customized product form or formulation.
2R (13 mm neck finish)
This product is supplied and shipped on blue ice.
Upon receipt, store it immediately at -20°C or lower for long term storage.
Please avoid repeated freeze-thaw cycles.