RP105 is a type 1 transmembrane protein of 105kD with extracellular leucine-rich repeats (LLRs) and a short cytoplasmic tail. RP105, assigned as CD180, is similar to Drosophila Toll in the extracellular LLRs. RP105 expression is largely restricted to immune cells including CD19+ B cells and macrophages. Histological studies showed that RP105 is expressed mainly on mature B cells in mantle zones. Antibody-mediated cross-linking of RP105 induces resistance against irradiation-induced apoptosis, B-cell proliferation, and up-regulation of a costimulatory molecule CD80, revealing RP105 as a potent regulator of B-cell activation. In this context it is important to note that RP105 is associated with MD1, and that it mediates B-cell surface expression and LPS recognition and signaling in cooperation with TLR4. MD-1 seems to be requisite for efficient expression of RP105.
Applications:
Suitable for use in Flow Cytometry, Immunoprecipitation and Immunohistochemistry. Other applications not tested.
Recommended Dilution:
Flow Cytometry: 1:50-1:100 10ul labels 10e6 cells in 100ul.
Immunohistochemistry: frozen
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
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