ZO-3, Mid (Tight Junction-associated Polypeptide, Zonula Occludens 3)

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£704.00

SKU:: Z0774
Purity:: Purified by immunoaffinity chromatography
Storage Conditions:: -20°C
Supplier:: United States Biological
Host:: Rabbit
Immunogen:: Synthetic peptide derived from the internal region of the human ZO-3 protein.
Format:: Supplied as a liquid in PBS, pH 7.4, 0.09% sodium azide
Extra Details:: ZO-3, a ~130kD protein, contains three PSD-95/SAP90, discs-large, ZO-1 (PDZ) domains, a SH3 domain, and a guanylate kinase-liked domain. Like ZO-1 and ZO-2, ZO-3 contains a C-terminal acidic domain and a basic region (between the first and second PDZ domains), making it belongs to the MAGUK protein family. By Western Blot analysis, ZO-3 is identified as a ~130kD protein that directly interacts with tight junction proteins ZO-1 and occuldin, but not with ZO-2. However, in one study, ZO-2, ZO-3 and Occludin colocalized with actin aggregates at cell border in MDCK cells. ZO-3 is localized to sites of cell-cell interaction, identical to that of ZO-1 in tight junctions. By Immunoprecipitation analysis, ZO-3 co-immunoprecipitates with ZO-1. Using MDCK cells, ZO-3 protein colocalized with ZO-1 by Immunofluorescence. In vitro binding assays, the N-terminal of ZO-3 showed preferably binding of ZO-1 and actin filaments. Moreover, the binding of ZO-1/ZO-2/ZO-3 was also found to interact with certain Claudin proteins. Applications: Suitable for use in Immunofluorescence, ELISA, Western Blot and Immunoprecipitation. Other applications not tested. Recommended Dilutions: Immunofluorescence: 0.5-2ug/ml ELISA: 0.1-1ug/ml Western Blot: 1-3ug/ml Immunoprecipitation: 2-3ug Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Shipping Conditions:: Blue Ice