Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to inhibit BAFF-mediated proliferation of anti-IgM stimulated mouse B cells. Moore, P.A. et al. (1999) Science 285:260; Gross, J.A. et al. (2000) Nature 404:995; Schneider, P. et al. (1999) J. Exp. Med. 189:1747. The ED 50 for this effect is 3‑10 ng/mL.
Source
Mouse myeloma cell line, NS0-derived
Human TACI
(Ser2-Thr166)
Accession # Q53F36DIEGRMD Human IgG1
(Pro100-Lys330)N-terminus C-terminus Accession #
N-terminal Sequence
AnalysisSer2, Ser123
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
45.2 kDa (starts at Ser2, monomer)31.3 kDa (starts at Ser123, monomer)
SDS-PAGE
51 kDa and 40 kDa, reducing conditions
174-TC |
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Formulation Lyophilized from a 0.2 μm filtered solution in PBS. | ||
Reconstitution Reconstitute at 100 μg/mL in sterile PBS. | ||
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. | ||
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Background: TACI/TNFRSF13B
TACI, transmembrane activator and CAML-interactor, is a member of the TNF receptor superfamily. TACI is a type III membrane protein with an extracellular N‑terminus in the absence of a cleaved signal sequence. The extracellular region of TACI contains two cysteine rich domains. Within the TNFRSF, it shares the highest homology with BCMA. TACI and BCMA have both been shown to bind APRIL and BAFF, members of the TNF ligand superfamily. TACI is expressed on the cell surface of B cells and activated, but not resting, T cells. Analogous to BCMA, data suggests that TACI may play an important role in B cell development, function and regulation. Human TACI is a 293 amino acid (aa) protein consisting of a 166 aa extracellular domain, a 20 aa transmembrane domain, and a 107 aa intracellular domain. Human and mouse TACI share 54% amino acid identity.
References:
Xia, X.-Z. et al. (2000) J. Exp. Med. 192:137.
von Bulow, G.U. et al. (1997) Science, 278:138.
Gross, J.A. et al. (2000) Nature 404:995.
Marsters, S.A. et al. (2000) Curr. Biol. 10:785.
Yan, M. et al. (2000) Nature Immunol. 1:37.
Wu, Y. et al. (2000) J. Biol. Chem. 275:35478.
Long Name:
Transmembrane Activator and CAML Interactor/Tumor Necrosis Factor Receptor Superfamily Member 13B
Entrez Gene IDs:
23495 (Human); 57916 (Mouse)
Alternate Names:
CD267 antigen; CD267; CVID; CVID2; FLJ39942; MGC133214; TACI; TACIMGC39952; TNFRSF13B; TNFRSF14B; Transmembrane activator and CAML interactor; tumor necrosis factor receptor 13B; tumor necrosis factor receptor superfamily member 13B; tumor necrosis factor receptor superfamily, member 13B
