| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | PRG3; MBP2; MBPH; MGC126662; MGC141971; prepro-major basic protein homolog |
| Assay Time | |
| Assay Type | |
| Detection Method | |
| Gene ID | |
| Product Type | |
| Reactivity | |
| Sample Type(s) | Cell culture supernatants, Serum, Plasma, Other biological fluids |
| Shipping | |
| Storage |
Features & Benefits
Human Proteoglycan 3 (PRG3) ELISA Kit has high sensitivity and excellent specificity for detection of Human PRG3. No significant cross-reactivity or interference between Human PRG3 and analogues was observed.
Background
Through large-scale sequencing, Plager et al. (1999) identified PRG3 as one of several transcripts upregulated in umbilical cord precursor cells following stimulation with interleukin-5. Using this sequence as probe, Plager et al. (2001) cloned PRG3 from a phage genomic library of placental tissues. Plager et al. (1999) found that the cDNA sequence predicts a mature 117-amino acid protein with a prepro- region of 108 amino acids. PRG3 shares 49% amino acid sequence identity with PRG2. RT-PCR demonstrated that PRG3 is expressed exclusively in bone marrow. Protein purified from eosinophil granules showed a molecular mass of 13.4 kD.Plager et al. (1999) found that the biologic activity of PRG3 is similar to that of PRG2 in cell killing and in neutrophil and basophil stimulation assays, but usually with reduced potency.
This Proteoglycan 3 (PRG3) ELISA kit is validated for use with Cell culture supernatants, Serum, Plasma, Other biological fluids. Samples should be collected, processed, and stored correctly to preserve analyte integrity — avoid repeated freeze-thaw cycles and centrifuge to remove particulates before use. Dilute samples exceeding the kit's detection range using the supplied assay diluent. Hemolytic, icteric, or lipemic samples may affect assay performance and should be tested with caution.
This is a sandwich ELISA kit employing an HRP (horseradish peroxidase)-conjugated secondary antibody paired with a TMB (3,3′,5,5′-tetramethylbenzidine) colorimetric substrate. In the sandwich format, the target analyte Proteoglycan 3 (PRG3) captured on the microplate surface is detected by the conjugated antibody, generating a colorimetric signal proportional to analyte concentration. The reaction is stopped and absorbance measured at 450 nm on a standard microplate reader.
The complete protocol, from sample addition to final plate reading, requires approximately 3–5 hours. This includes two incubation periods (analyte binding and detection antibody steps), intermediate wash cycles to remove unbound material, 15–30 minutes of TMB substrate development, and final stop-solution addition before absorbance reading. Exact timing will vary with experience level and the number of samples processed in parallel.
Required equipment: (1) a microplate spectrophotometer capable of reading absorbance at 450 nm (reference wavelength 540–570 nm recommended for background correction); (2) precision single-channel or multichannel pipettes; (3) a plate washer or multichannel aspirator; (4) a microcentrifuge for sample clarification; and (5) a 37°C incubator or stable room-temperature environment. No fluorescence or luminescence reader is required — standard colorimetric plate readers are fully compatible with this kit.
This ELISA kit is formally validated for Human. Cross-reactivity with species not listed in the specification has not been independently characterized. Variability in protein sequence homology across species means that performance in unlisted species cannot be guaranteed without additional validation. For cross-species detection requirements or non-standard sample matrices, please contact BioHippo support or refer to the manufacturer's technical team for guidance.
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