Preparation And Storage
Product Notices
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- Source of all serum proteins is from USDA inspected abattoirs located in the United States.
Tight junctions (zonulae occludens) are critical to the maintenance of cell polarity and intercellular barriers between epithelial and endothelial cells. Among the barriers formed by the tight junctions is the critical blood-brain barrier. Protein components of the tight junctions include actin filaments, symplekin, occludin, Rab3B, AF-6, 7H6, ZO-1 and ZO-2. The human occludin protein is 522 amino acids with four transmembrane domains in the first half of the protein. Two glycine/tyrosine-rich extracellular loops are involved in cell-cell interactions. In the cytoplasm, occludin interacts with ZO-1 through its intracellular C-terminus. A possible function of ZO-1 may be to link the adherens components, like occludin, to the submembraneous actin cytoskeleton. Experimental breakdown of the tight junctions at the blood-brain barrier results in redistribution of vinculin and loss of ZO-1 and Occludin. Taken together, these data indicate that occludin and ZO-1 are critical elements in the formation of tight junctions and may also serve an important role in signaling and tumor suppression.
This antibody is routinely tested by western blot analysis. Other applications were tested at BD Biosciences Pharmingen during antibody development only or reported in the literature.
Development References (3)
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Ando-Akatsuka Y, Saitou M, Hirase T, et al. Interspecies diversity of the occludin sequence: cDNA cloning of human, mouse, dog, and rat-kangaroo homologues. J Cell Biol. 1996; 133(1):43-47. (Biology). View Reference
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Bolton SJ, Anthony DC, Perry VH. Loss of the tight junction proteins occludin and zonula occludens-1 from cerebral vascular endothelium during neutrophil-induced blood-brain barrier breakdown in vivo. Neuroscience. 1998; 86(4):1245-1257. (Biology). View Reference
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Fanning AS, Jameson BJ, Jesaitis LA, Anderson JM. The tight junction protein ZO-1 establishes a link between the transmembrane protein occludin and the actin cytoskeleton. J Biol Chem. 1998; 273(45):29745-29753. (Biology). View Reference
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Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims. Comparisons are not made against non-BD technologies, unless otherwise noted.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.