| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | SPRR1B; CORNIFIN; GADD33; MGC61901; SPRR1; cornifin B; small proline-rich protein 1B |
| 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
Mouse Cornifin-B (SPRR1B) ELISA Kit has high sensitivity and excellent specificity for detection of Mouse SPRR1B. No significant cross-reactivity or interference between Mouse SPRR1B and analogues was observed.
Background
All SPRR genes are closely linked within a 300-kb DNA segment on 1q21-q22.Marvin et al. (1992) characterized a cDNA clone corresponding to mRNA abundantly expressed in differentiating squamous cells originally isolated from a rabbit squamous cell library. Small Proline Rich Protein 1B is a 14-kD protein that appears to function as a component of the crosslinked envelope in squamous differentiating cells. Called cornifin, the protein has a high content of proline (31%), glutamine (20%), and cysteine (11%) and contains 13 repeats of an octapeptide (consensus sequence, EPCQPKVP) at its C terminus. In situ hybridization analysis showed that the mRNA is restricted to the suprabasal layers of the epidermis. Crosslinking of the protein appears to be mediated by transglutaminase type I.
This Cornifin-B (SPRR1B) 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 Cornifin-B (SPRR1B) 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 Mouse. 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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