Thrombopoietin Protein, Cynomolgus, Recombinant (His Tag)

Product Specifications

Background

Thrombopoietin (TPO or THPO), also known as myeloproliferative leukemia virus ligand (c-Mpl), is a hematopoietic growth factor belonging to the EPO/TPO family. The thrombopoietin protein is produced mainly by the liver and the kidney that regulates the production of platelets by the bone marrow. Thrombopoietin protein stimulates both proliferation of progenitor megakaryocytes and their maturation to platelet-producing megakaryocytes, and also accelerates the recovery of platelets. Thrombopoietin protein is involved in cardiovascular disease as it regulates megakaryocyte development and enhances platelet adhesion/aggregation. It has been identified that surface c-MPL, the receptor for thrombopoietin protein, binds to the ligand and mediates the action.

Overview

A DNA sequence encoding the Cynomolgus (Macaca fascicularis) THPO (XP_005546625.1) (Met 1-Gly 353) precursor was expressed, with a C-terminal polyhistidine tag.

Gene Name

Thrombopoietin

Expression System

HEK293 Cells

Tag

C-His

Field of Research

Serine Proteases and Regulators

Endotoxin

< 1.0 EU per μg of the protein as determined by the LAL method.

Purity

> 86 % as determined by SDS-PAGE.

Activity

Measured in a cell proliferation assay using MO7e human megakaryocytic leukemic cells. The EDfor this effect is typically 4-20 ng/mL.

Form

Lyophilized

Buffer

Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

Function

Cytokine Proteins, Growth Factor proteins, Biological Target proteins

Molecular Weight

The recombinant cynomolgus THPO consists of 343 amino acids and has a calculated molecular mass of 36.8 kDa. The apparent molecular mass of the recombinant protein is approximately 70-80 kDa in SDS-PAGE under reducing conditions due to glycosylation.

Storage Conditions

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.