| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | REG4; GISP; REG-IV; RELP; OTTHUMP00000014031; gastrointestinal secretory protein; regenerating gene type IV |
| 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 Regenerating gene 4 (REG-4) ELISA Kit has high sensitivity and excellent specificity for detection of Human REG4. No significant cross-reactivity or interference between Human REG4 and analogues was observed.
Background
The REG4 gene encodes a deduced 158-amino acid protein with an N-terminal signal peptide of 22 amino acids and a predicted molecular mass of 18.2 kD. REG4 maintains conservation of the 6 cysteine residues present in other known members of the REG family. By Northern blot analysis of intestinal mucosa from 12 individuals with inflammatory bowel disease, Hartupee et al. (2001) identified a 1.1-kb REG4 transcript in all samples. Control specimens had low but detectable expression of REG4. REG4 expression was significantly upregulated by inflammation and tissue injury associated with active Crohn disease and ulcerative colitis. RNA dot-blot analysis showed that most of the tissues expressing REG4 are in the gastrointestinal tract, i.e., colon, small intestine, stomach, and pancreas.
This Regenerating gene 4 (REG-4) 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 Regenerating gene 4 (REG-4) 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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