Megakaryocyte colony-stimulating factor, c-MPL Ligand, MGDF, THPO

Measure by its ability to induce proliferation in MO7e cells.
The ED50 for this effect is <2 ng/mL.
The specific activity of recombinant human TPO is > 5 x 105 IU/mg.

Thrombopoietin is a glycoprotein hormone produced mainly by the liver and the kidney that regulates the production of platelets by the bone marrow. The protein functions in the iodination of tyrosine residues in thyroglobulin and phenoxy-ester formation between pairs of iodinated tyrosines to generate the thyroid hormones, thyroxine and triiodothyronine. It stimulates the production and differentiation of megakaryocytes, the bone marrow cells that fragment into large numbers of platelets.

P40225.1

7066

SPAPPACDLRVLSKLLRDSHVLHSRLSQCPEVHPLPTPVLLPAVDFSLGEWKTQMEETKAQDILGAVTLLLEGVMAARGQLGPTCLSSLLGQLSGQVRLLLGALQSLLGTQLPPQGRTTAHKDPNAIFLSFQHLLRGKVRFLMLVGGSTLCVRRAPPTTAVPSRTSLVLTLNEL with polyhistidine tag at the N-terminus.

His-tag?at?the?N-terminus

Human

Human

Escherichia coli

E. coli

>95% as determined by SDS-PAGE.
Ni-NTA chromatography.

< 0.01 EU per 1 μg of the protein by the LAL method.

19.6 kDa

The protein was lyophilized from a solution containing 1X PBS, pH 7.4.

It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.

Blue Ice

Lyophilized protein should be stored at -20°C for 1 year.
Upon reconstitution, store at 2°C to 8°C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1%
BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20°C or -80°C for 3-6 months.

Cytokines

Cell culture, Elisa