T1568
Thrombopoietin human
recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture, ≥98% (SDS-PAGE and HPLC)
Synonym(s):
MGDF, Megakaryocyte colony-stimulating factor, TPO, c-MPL ligand
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About This Item
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biological source
human
Quality Level
recombinant
expressed in E. coli
Assay
≥98% (SDS-PAGE and HPLC)
form
lyophilized powder
potency
≤1.0 ng/mL ED50
mol wt
18.6 kDa
packaging
pkg of 5 μg
storage condition
avoid repeated freeze/thaw cycles
technique(s)
cell culture | mammalian: suitable
impurities
endotoxin, tested
UniProt accession no.
storage temp.
−20°C
Gene Information
human ... THPO(7066)
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Application
TPO 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
Biochem/physiol Actions
Thrombopoeitin is a primary regulatory factor for megakaryocytopoiesis and thrombopoiesis. The mature form of TPO is a highly conserved glycoprotein, showing homology among various mammals. It is produced by liver and kidney cells. TPO stimulates growth and maturation of megakaryocytes and megakaryocytic colonies from bone marrow cultures. TPO binds and activates an 68-78 kDa glycoprotein receptor belonging to the GH family of cytokine receptors, a family that includes receptors to growth hormone (GH), erythropoietin (EPO), and prolactin (PRL). Like GH and EPO, TPO may bind to its receptor at two distinct sites, initiating receptor dimerization and activation. Analysis of mRNA indicates also the existence of a novel truncated and potentially soluble form of TPO receptor. The viral oncogene v-mlp of the myeloproliferative leukemia virus (MPLV) contains the gene sequence for the entire cytoplasmic and transmembrane domains and a portion of the extracellular domain of c-mlp (TPO receptor).
Physical form
Lyophilized from a 0.1 % TFA solution containing 250 μg bovine serum albumin
Analysis Note
The biological activity is measured in a cell proliferation assay using MO7e cells.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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