Recombinant Human HB-EGF

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Pricing & Details

Product. No.H1419
Alternate Names
Heparin-Binding EGF-Like Growth Factor, DTR, DTS, DTSF, HEGFL
Expression Host
Sf 21 Insect Cells
Species
Human
Prod No.
Size
Price
Avail.
Qty
Add to cart
H1419-50 µg
50 µg
$189.00
In stock
Max:
Min: 1
Step: 1
H1419-250 µg
250 µg
$569.00
In stock
Max:
Min: 1
Step: 1

Background

Heparin-binding EGF-like growth factor (HB-EGF), also known as DTR and DTS, is a heparin binding, O-glycosylated protein and a member of the EGF family of proteins. It is a potent mitogen and chemoattractant for vascular smooth muscle cells, fibroblasts and epithelial cells but not endothelial cells. HB-EGF is synthesized as a membrane-anchored precursor that is proteolytically cleaved to release the soluble mature growth factor. The two forms are active as juxtacrine and paracrine/autocrine growth factors respectively. HB-EGF activates two EGF receptor subtypes, HER1/ErbB1 and HER4 and binds to heparin sulfate proteoglycan. HB-EGF is expressed in numerous cell types and tissues, including vascular endothelial cells and SMC, macrophages, skeletal muscle, keratinocytes and certain tumor cells. It has been shown to play a role in wound healing, cardiac hypertrophy and heart development and function (2). HB-EGF contributes to cell adhesion, invasion, and angiogenesis, which are integral to transcoelomic metastasis in ovarian cancer (3). Production of HB-EGF in vascular smooth muscle cells is induced by angiotensin, thus it may have an important autocrine role in the proliferation of these cells in vascular diseases such as atherosclerosis and hypertension. HB-EGF has been shown to interact with NRD1, zinc finger and BTB domain-containing protein 16 and BAG1.

Protein Details

Purity
>97% by SDS-PAGE and analyzed by silver stain.
Endotoxin Level
<1.0 EU/µg as determined by the LAL method
Biological Activity
The biological activity of Human HB-EGF was determined by its ability to stimulate proliferation in a mouse fibroblast cell line, Balb/3T3.4 The expected ED50 for this effect is typically 0.15 - 0.75 ng/ml. The cell number is assessed in a fluorometric assay using the redox sensitive dye, Resazurin.
Expression Host
Sf 21 Insect Cells
Protein Accession No.
Amino Acid Sequence
dlqeadld llrvtlsskp qalatpnkee hgkrkkkgkg lgkkrdpclr kykdfcihge ckyvkelrap scichpgyhg erchglsl
N-terminal Sequence Analysis
Asp63 (major), Gly32, Glu24
State of Matter
Lyophilized
Predicted Molecular Mass
The predicted molecular weight of Recombinant Human HB-EGF is Mr 9.5 kDa. However, this recombinant protein is heterogenously O-glycosylated and the actual molecular weight as observed by migration on SDS-PAGE is Mr 11-20 kDa.
Formulation
This recombinant protein was 0.2 µm filtered and lyophilized from modified Dulbecco’s phosphate buffered saline (1X PBS) pH 7.2 – 7.3 with no calcium, magnesium, or preservatives present.
Storage and Stability
This lyophilized protein is stable for six to twelve months when stored desiccated at -20°C to -70°C. After aseptic reconstitution, this protein may be stored at 2°C to 8°C for one month or at -20°C to -70°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles. See Product Insert for exact lot specific storage instructions.
Country of Origin
USA
Shipping
Next Day Ambient
PubMed
NCBI Gene Bank

References & Citations

1. Higashiyama, S. et al. (1993) J. Cell Biol. 122:933
2. Higashiyama, S. et al. (2004) Cytokine Growth Factor Rev. 15:13
3. Miyamoto, S. et al. (2008) Mol. Cancer Ther. 7:3441
4. Rubin, JS. et al. (1991) Proc. Natl. Acad. Sci. USA 88:415
IMPORTANT Use lot specific datasheet for all technical information pertaining to this recombinant protein.
Products are for research use only. Not for use in diagnostic or therapeutic procedures.
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