Polymeric immunoglobulin receptor, PIGR, PIgR, Poly-Ig receptor, Hepatocellular carcinoma-associated protein TB6, polymeric immunoglobulin receptor precursor.
Polymeric immunoglobulin receptor (PIGR) is responsible for transcytosis of soluble dimeric IgAs and immune. PIGR binds polymeric IgA and IgM at the basolateral surface of epithelial cells, then the complex is transported across the cell to be secreted at the apical surface.cytokines, hormones, and pathogenic stimuliregulate PIGR expression. The expression of PIGR is critically regulated by the pro-inflammatory cytokines, such as IL-1, IL-4, TNF-α, and IFN-γ.
PIGR Human produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 629 amino acids (19-638 aa) and having a molecular mass of 68.9 kDa.
PIGR is fused to a 6 amino acid His tag at C-terminus and purified by proprietary chromatographic techniques.
Sf9, Baculovirus cells.
PIGR protein solution (1mg/ml) containing Phosphate-Buffered Saline (pH7.4) and 10% glycerol.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Avoid multiple freeze-thaw cycles.
Greater than 95.0% as determined by SDS-PAGE.
Measured by its binding ability in a functional ELISA with Human IgM. The ED50 range ≤10 ug/ml.
Amino acid sequence
ADLKSPIFGP EEVNSVEGNS VSITCYYPPT SVNRHTRKYW CRQGARGGCI TLISSEGYVS SKYAGRANLT NFPENGTFVV NIAQLSQDDS GRYKCGLGIN SRGLSFDVSL EVSQGPGLLN DTKVYTVDLG RTVTINCPFK TENAQKRKSL YKQIGLYPVL VIDSSGYVNP NYTGRIRLDI QGTGQLLFSV VINQLRLSDA GQYLCQAGDD SNSNKKNADL QVLKPEPELV YEDLRGSVTF
HCALGPEVAN VAKFLCRQSS GENCDVVVNT LGKRAPAFEG RILLNPQDKD GSFSVVITGL RKEDAGRYLC GAHSDGQLQE GSPIQAWQLF VNEESTIPRS PTVVKGVAGG SVAVLCPYNR KESKSIKYWC LWEGAQNGRC PLLVDSEGWV KAQYEGRLSL LEEPGNGTFT VILNQLTSRD AGFYWCLTNG DTLWRTTVEI KIIEGEPNLK VPGNVTAVLG ETLKVPCHFP CKFSSYEKYW
CKWNNTGCQA LPSQDEGPSK AFVNCDENSR LVSLTLNLVT RADEGWYWCG VKQGHFYGET AAVYVAVEER KAAGSRDVSL AKADAAPDEK VLDSGFREIE NKAIQDPRLF AEEKAVADTR DQADGSRASV DSGSSEEQGG SSRHHHHHH