| Field | Specification |
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| Alternative Names | TMEM173; ERIS; FLJ38577; MITA; MPYS; NET23; STING; N-terminal methionine-proline-tyrosine-serine plasma membrane tetraspanner; endoplasmic reticulum IFN stimulator; mitochondrial mediator of IRF3 activation; st |
| Assay Time | |
| Assay Type | |
| Detection Method | |
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| Product Type | |
| Reactivity | |
| Sample Type(s) | Cell culture supernatants, Serum, Plasma, Other biological fluids |
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Features & Benefits
Human Transmembrane protein 173 (TMEM173) ELISA Kit has high sensitivity and excellent specificity for detection of Human TMEM173. No significant cross-reactivity or interference between Human TMEM173 and analogues was observed.
Background
The deduced 379-amino acid protein has a calculated molecular mass of 42.2 kD. It has 5 putative N-terminal transmembrane domains, a signal cleavage site in the first transmembrane domain, and a leucine-rich region that overlaps the first 4 transmembrane domains. Northern blot analysis detected STING expression in all tissues examined. Confocal microscopy and fractionation analysis of human embryonic kidney 293 cells revealed that STING predominantly associated with the endoplasmic reticulum (ER). Western blot analysis of 293 cells detected endogenous STING at an apparent molecular mass of 42 kD.STING activated both the NF-kappa-B and IRF3 transcription pathways to induce expression of IFN-alpha (IFNA1) and IFN-beta and exert a potent antiviral effect.
This Transmembrane protein 173 (TMEM173) 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 Transmembrane protein 173 (TMEM173) 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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