Active Histidine Rich Glycoprotein (HRG)

HPRG; HRGP; Histidine-Proline Rich Glycoprotein; Thrombophilia Due To Elevated HRG

ACTIVITY TEST

HRG (Histidine-rich glycoprotein) is a plasma glycoprotein which is distinguished by its high content of histidine and proline. HRG binds a number of ligands such as heme, heparin, heparan sulfate, thrombospondin, plasminogen, and divalent
metal ions. Thus, a functional binding ELISA assay was constructed to detect the association of rhHRG with heparin. Briefly, Microtiter wells were coated with OVA-conjugated-heparin. rhHRG were diluted serially in 0.01M PBS (pH 7.4). Duplicate samples of 100uL were then transferred to the coated microtiter wells and incubated for 2h at 37°C. Wells were washed with PBST and incubated for 1h with anti-HRG PAb, then aspirated and washed 3 times. After incubation with HRP labeled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate Solution, wells were incubated 15-25 minutes at 37°C. Finally, add 50µL stop solution to the wells and read at 450nm immediately.
The binding activity of rhHRG with heparin was shown in Figure 1 and this effect was in a dose dependent manner.

USAGE

Reconstitute in 20mM Tris, 150mM NaCl (pH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

STORAGE

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

STABILITY

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

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Magazine Citations
J. Proteome Res. Identification and Confirmation of Differentially Expressed Fucosylated Glycoproteins in the Serum of Ovarian Cancer Patients Using a Lectin Array and LC–MS/MS ACS: pr300330z
Medical Oncology Evaluation of histidine-rich glycoprotein tissue RNA and serum protein as novel markers for breast cancer Springer: Source
Int J Cancer The nuclear bile acid receptor FXR controls the liver derived tumor suppressor histidine‐rich glycoprotein PubMed: 25363753
Nucleic Acid Therapeutics Pharmacokinetic and Pharmacodynamic Investigations of ION-353382, a Model Antisense Oligonucleotide: Using Alpha-2-Macroglobulin and Murinoglobulin Double-Knockout Mice Pubmed:27031383
United States Patent Application Compositions and Methods for Diagnosing Lung Cancer y2016:0077095.html
Hypertension Research Combination of serum histidine-rich glycoprotein and uterine artery Doppler to predict preeclampsia Pubmed:29416108
journal of histochemistry & cytochemistry Ultrastructural Localization of Histidine-rich Glycoprotein in Skeletal Muscle Fibers: Colocalization With AMP Deaminase Pubmed: 31880188
DOKLADY BIOCHEMISTRY AND BIOPHYSICS Personalized Approach to Determination of Histidine-Rich Glycoprotein and E-Cadherin in Supernatants of Immunocompetent Blood Cells and Breast Biopsy … Pubmed: 32342301
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