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ZO-2 Polyclonal antibody

ZO-2 Polyclonal Antibody for IF, WB, ELISA

Host / Isotype

Rabbit / IgG

Reactivity

human, mouse, rat and More (1)

Applications

WB, IP, IHC, IF, ELISA

Conjugate

Unconjugated

Cat no : 18900-1-AP

Synonyms

Tight junction protein 2, Tight junction protein ZO 2, TJP2, X104, ZO 2, ZO2, ZO-2, Zona occludens protein 2, Zonula occludens protein 2



Tested Applications

Positive WB detected inMCF-7 cells, HeLa cells, mouse heart tissue, HEK-293 cells, mouse brain tissue, rat brain tissue, NIH/3T3 cells, C6 cells
Positive IF detected inMCF-7 cells

Recommended dilution

ApplicationDilution
Western Blot (WB)WB : 1:500-1:2000
Immunofluorescence (IF)IF : 1:20-1:200
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, check data in validation data gallery

Product Information

18900-1-AP targets ZO-2 in WB, IP, IHC, IF, ELISA applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivityhuman, mouse, rat, pig
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen ZO-2 fusion protein Ag13534
Full Name tight junction protein 2 (zona occludens 2)
Calculated molecular weight 134 kDa
Observed molecular weight 150 kDa
GenBank accession numberBC027592
Gene symbol TJP2
Gene ID (NCBI) 9414
RRIDAB_2203584
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

Zona occludens protein 2 (ZO-2), also known as tight junction protein 2 (TJP2), is a membrane-associated guanylate kinase acting at intercellular contacts of epithelial and endothelial cells but also in their nuclei.

What is the molecular weight of ZO-2? Are there any isoforms of ZO-2? Is ZO-2 post-translationally modified?

The molecular weight of ZO-2 is 160 kDa. There are two known isoforms of ZO-2: full-length ZO-2A and ZO-2C lacking the first 23 amino acids (PMID: 10360833). ZO-2 can be phosphorylated and O-glycosylated, which has an impact on its localization (PMID: 23804652).

What is the subcellular localization of ZO-2?

ZO-2 is present at the cytoplasmic face at cell-cell contact sites: tight junctions, adherens junctions, and gap junctions (PMID: 20224657). ZO-2 contains nuclear localization and nuclear export signals and can actively shuttle between the cytoplasm and nucleus (PMID: 11855865). In the nucleus it can affect the activity of various transcription factors. ZO-2 nuclear localization is most prominent in sparse 2D cell cultures and also in cells subjected to mechanical or chemical stress.

What is the tissue expression pattern of ZO-2?

ZO-2 is expressed in various tissues in epithelial and endothelial cells. ZO-2 isoforms have tissue specificity, with ZO-2A being abundant in the heart and brain, while ZO-2C is found in the kidney, pancreas, heart, and placenta (PMID: 11018256).

What proteins can be used as markers of tight junctions?

Zona occludens proteins are often used as tight junction markers. Apart from the antibody against ZO-2, one can use antibodies against ZO-1 (https://www.ptglab.com/products/ZO1-Antibody-21773-1-AP.htm), occludin (https://www.ptglab.com/products/OCLN-Antibody-13409-1-AP.htm), and claudins (e.g., claudin 1: https://www.ptglab.com/products/CLDN1-Antibody-13050-1-AP.htm).


Protocols

Product Specific Protocols
WB protocol for ZO-2 antibody 18900-1-APDownload protocol
IF protocol for ZO-2 antibody 18900-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols

Publications

SpeciesApplicationTitle
mouseIF

EMBO Mol Med

Deficiency in intestinal epithelial O-GlcNAcylation predisposes to gut inflammation.

Authors - Ming Zhao
humanWB

Cell Rep

p120 RasGAP and ZO-2 are essential for Hippo signaling and tumor-suppressor function mediated by p190A RhoGAP

Authors - Hanyue Ouyang
  • KD Validated
mouseIF

Biomater Sci

Improved epithelial cell-cell adhesion using molecular mobility of supramolecular surfaces.

Authors - Ryo Mikami
humanWB

Free Radic Biol Med

Prenylated xanthones from mangosteen (Garcinia mangostana) activate the AhR and Nrf2 pathways and protect intestinal barrier integrity in HT-29 cells.

Authors - Restituto Tocmo
mouseWB,IHC

J Agric Food Chem

Gut Microbiota from Short-Chain Chlorinated Paraffin-Exposed Mice Promotes Astrocyte Activation by Disrupting the Intestinal Tight Junction via Zonulin Upregulation

Authors - Xinyuan Zhao
WB

J Cereb Blood Flow Metab

NLRP3 deficiency ameliorates neurovascular damage in experimental ischemic stroke.

Authors - Fan Yang