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Recombinant Human IGFBP-4 Protein (RP00185)

Bioactivityvalidated

Datasheet

Overview

Product nameRecombinant Human IGFBP-4 Protein
Catalog No.RP00185
DescriptionRecombinant Human IGFBP-4 Protein is produced by HEK293 expression system. The target protein is expressed with sequence (Met1-Glu258) of human IGFBP-4 (Accession #NP_001543.2) fused with a 6×His tag at the C-terminus.
Bio-Activity1.Measured by its binding ability in a functional ELISA. Immobilized Human IGFBP4 at 1 μg/mL (100 μL/well) can bind Human IGF1 with a linear range of 1.95-111.32 ng/mL.
2.Measured by its binding ability in a functional ELISA. Immobilized Human IGFBP4 Protein at 1 μg/mL (100 μL/well) can bind IGF1 with a linear range of 1.95-122.3ng/mL.
Purity> 92% by SDS-PAGE.
Endotoxin< 0.1 EU/μg of the protein by LAL method.
FormulationLyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.
SpeciesHuman
Calculated MW28.77 kDa
IGFBP-4 (insulin-like growth factor binding protein 4) is member of the IGFBP family of structurally similar secreted glycoproteins . IGFBP-4 binds both insulin-like growth factor 1 (IGF-1) and IGF-2 with high affinity and inhibits IGF action in vitro. It circulates in the plasma in both glycosylated and non-glycosylated forms. Binding of this protein prolongs the half-life of the IGFs and alters their interaction with cell surface receptors. There is mounting evidence that IGFBP proteins plays a key role in the regulation of IGF bioavailability, by modulating its molecular size, capillary membrane permeability, target tissue specificity, cell membrane adherence and IGF affinity.
SynonymIGFBP4; BP-4; HT29-IGFBP; IBP4; IGFBP-4
Expression HostHEK293 cells
TagC-His
Swiss-Prot
Gene ID
StorageStore at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt.
After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.
ReconstitutionCentrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.

* For research use only. Not for therapeutic or diagnostic purposes.

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