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You are here:Home » Antibodies » Antibodies-Connexin, Junction Proteins » Anti -ZO-1 (Tight Junction-associated Polypeptide, Zonula Occludens 1)

Anti -ZO-1 (Tight Junction-associated Polypeptide, Zonula Occludens 1)


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Clone Host Grade Applications
Polyclonal Rabbit Affinity Purified E B IP IH
ZO-1 is a peripheral membrane protein that is associated with tight junctions (zonula occludentes) which are found on the cytoplasmic surface of epithelial and endothelial cell membranes. ZO-1 has a MW of 225kD and is found in two isoforms that differ by the presence or absence of an 80 amino acid region known as 'motif-a'. These two isoforms are the basis for determining two classes of tight junctions. ZO-1 is known to interact with ZO-2. ZO-1 is homologous to dlg, the Drosophila tumor suppressor. Both are members of a putative signal transduction protein family whose members contain a SH3 domain and a domain homologous to the enzyme guanylate kinase.
Catalog #Z0750-02B
ApplicationsSuitable for use in ELISA, Western Blot, Immunoprecipitation, Immunofluorescence and Immunohistochemistry. Other applications have not been tested.
Recommended DilutionsOptimal dilutions to be determined by the researcher.
Positive Controls for ImmunoprecipitationCanine MDCK and human Caco-2 cells.
Storage and StabilityMay 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.
Clone TypePolyclonal
FormSupplied as a liquid in PBS, pH 7.4, 0.09% sodium azide.
PurityPurified by immunoaffinity chromatography.
ImmunogenA 69kD fusion protein corresponding to aa463-1109 of human ZO-1 cDNA. This sequence lies from the N-terminal to the 80aa region (the alpha-motif) present in the a+isoform but absent in the alpha- isoform due to alternative splicing.
SpecificityRecognizes human ZO-1 alpha+ and ZO-1 alpha- isoforms. Reactivity with dlg has not been characterized. No reactivity with PSD-95 or p55 has been observed on Western Blots, but potential reactivity with these proteins has not been fully characterized. Species Crossreactivtiy: mouse, rat, guinea pig, canine. Moderate reactivity with chicken.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

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