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Recombinant Human Thrombopoietin

Certificate of Analysis and Data Sheet

Source:
E.Coli

Catalog No.
CYT-302

Description :

Recombinant Human Thrombopoietin produced in E.Coli is a single, non-glycosylated polypeptide chain containing 174 amino acids and having a molecular mass of 18608 Dalton which comprises the receptor binding domain of the Mpl-ligand protein. Recombinant Human Thrombopoietin is purified by proprietary chromatographic techniques.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation:

Lyophilized from a concentrated (1mg/ml) solution in water containing no additives.

Solubility:

It is recommended to reconstitute the lyophilized Recombinant TPO in sterile 18MΩ-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.

Stability:

Lyophilized Recombinant TPO although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution Recombinant TPO should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please avoid freeze-thaw cycles.

Purity:

Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Anion-exchange FPLC. (c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained.

Amino-Acid Sequence :

The sequence of the first five N-terminal amino acids was determined and was found to be Ser-Pro-Ala-Pr-Pro.

Dimers and aggregates:

Less than 1% as determined by silver-stained SDS-PAGE gel analysis.

Biological Activity:

ProSpec旧 Recombinant TPO is fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of MO7e cells is less then 1 ng/ml, corresponding to a Specific Activity of 1 x 10 6 IU/mg.

Endotoxin:

Less than 0.1 ng/ug (IEU/ug) of TPO.

Protein content:

Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm. 2. Analysis by RP-HPLC, using a calibrated solution of TPO as a Reference Standard.

Usage:

This material is offered by ProSpec-TechnoGene for research, laboratory or further evaluation purposes.


Gene:

Name:THPO

Protein synonyms/aliases:

Thrombopoietin precursor (Megakaryocyte colony-stimulating factor)
    (Myeloproliferative leukemia virus oncogene ligand)
    (C-mpl ligand)
    (ML)
    (Megakaryocyte growth and development factor)
    (MGDF).

Protein Family:

Belongs to the EPO/TPO family.

Protein Domains:


Domains:
IPR001323   Erythropoietin/thrombopoeitin

Related proteins:

Recombinant Human Erythropoietin-alpha
Recombinant Murine Thrombopoietin

Protein links:

Recombinant Human Thrombopoietin protein domain

Recombinant Human Thrombopoietin protein family


Precursor- Protein structure and amino acid sequence:


Latest Publications:

1. Thrombopoietin stimulates migration and activates multiple signaling pathways in hepatoblastoma cells.
Am J Physiol Gastrointest Liver Physiol 2006 Jan;290(1):G120-8
2. [Thrombopoietin (TPO)]
Nippon Rinsho 2005 Aug;63 Suppl 8:618-20
3. Human umbilical cord blood-derived f-macrophages retain pluripotentiality after thrombopoietin expansion.
Exp Cell Res 2005 Nov 1;310(2):311-8
4. Xanthocillins as thrombopoietin mimetic small molecules.
Bioorg Med Chem 2005 Dec 1;13(23):6388-93
5. Serum interleukin (IL)-1, IL-2, sIL-2Ra, IL-6 and thrombopoietin levels in patients with chronic myeloproliferative diseases.
Br J Haematol 2005 Sep;130(5):709-15
6. Dual effects of adenovirus-mediated thrombopoietin gene transfer on hepatic oval cell proliferation and platelet counts.
Biochem Biophys Res Commun 2005 Sep 30;335(3):723-9

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中華民國95年06月06日更新