|Other Names||CD320 antigen, 8D6 antigen, FDC-signaling molecule 8D6, FDC-SM-8D6, Transcobalamin receptor, TCblR, CD320, CD320, 8D6A|
|Target/Specificity||The synthetic peptide sequence used to generate the antibody AP13137b was selected from the C-term region of CD320. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.|
|Format||Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Function||Receptor for transcobalamin saturated with cobalamin (TCbl) (PubMed:18779389). Plays an important role in cobalamin uptake (PubMed:18779389, PubMed:20524213). Plasma membrane protein that is expressed on follicular dendritic cells (FDC) and mediates interaction with germinal center B cells (PubMed:10727470). Functions as costimulator to promote B cell responses to antigenic stimuli; promotes B cell differentiation and proliferation (PubMed:10727470, PubMed:11418631). Germinal center-B (GC-B) cells differentiate into memory B-cells and plasma cells (PC) through interaction with T-cells and follicular dendritic cells (FDC) (PubMed:11418631). CD320 augments the proliferation of PC precursors generated by IL-10 (PubMed:11418631).|
|Cellular Location||Cell membrane; Single- pass type I membrane protein|
|Tissue Location||Detected in the germinal center (GC) of lymphoid follicles (at protein level) (PubMed:11418631). Expressed abundantly on follicular dendritic cells (FDCs) (PubMed:10727470)|
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Provided below are standard protocols that you may find useful for product applications.
The CD320 antigen gene encodes the transcobalamin receptor(TCBLR). Cellular uptake of cobalamin (vitamin B12) is mediated byreceptors expressed on the cell surface. Transcobalamin II (TCN2;MIM 613441), a plasma protein secreted by endothelial cells, bindsthe cobalamin absorbed in the distal ileum and carries 10 to 30% oftotal circulating cobalamin. CD320 encodes a transcobalaminreceptor that binds TCN2-cobalamin at the plasma membrane andinternalizes the complex by endocytosis (Quadros et al., 2009[PubMed 18779389]).
Jiang, W., et al. Gene 466 (1-2), 49-55 (2010) :Pangilinan, F., et al. J. Med. Genet. 47(10):677-685(2010)Quadros, E.V., et al. Hum. Mutat. 31(8):924-929(2010)Quadros, E.V., et al. Blood 113(1):186-192(2009)Cho, W., et al. BMB Rep 41(12):863-867(2008)
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