Human SIT1 Antibody

Catalog # Availability Size / Price Qty
Product Details
Supplemental Products

Human SIT1 Antibody Summary

Species Reactivity
Detects human SIT1 in direct ELISAs and Western blots.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human SIT1
Accession # Q9Y3P8
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human SIT1

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: SIT1

SIT1 (SHP-2-interacting transmembrane adapter 1; also signaling threshold-regulating transmembrane adapter 1) is a 35‑40 kDa type I transmembrane glycoprotein that belongs to a diverse group of transmembrane adapter proteins. It is expressed on thymocytes, plasma cells and T cells. When engaged, SIT1 downregulates TCR signaling. Mature human SIT1 is 172 amino acids (aa) in length. It contains a short extracellular domain (aa 25‑40) that undergoes homodimerization and an extensive intracellular region (aa 62‑196) that contains three key phosphorylation sites (Tyr90/169/188). Over aa 65‑196, human SIT1 is 86% and 80% aa identical to canine and mouse SIT1, respectively.

Long Name
Signaling Threshold Regulating Transmembrane Adaptor 1
Entrez Gene IDs
27240 (Human)
Alternate Names
gp30/40; MGC125908; MGC125909; RP11-331F9.5; SHP2 interacting transmembrane adaptor; SHP2-interacting transmembrane adapter protein; SHP2-interacting transmembrane adaptor protein; signaling threshold regulating transmembrane adaptor 1; signaling threshold-regulating transmembrane adapter 1; SIT1; SITMGC125910; suppression inducing transmembrane adaptor 1; Suppression-inducing transmembrane adapter 1

Product Datasheets

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

Goat IgG (H+L) Antibody


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