Proteintech, 18900-1-AP, ZO-2 Polyclonal antibody

Size: 20ul / 150ul The ZO-2 (18900-1-AP) by Proteintech is a Polyclonal antibody targeting ZO-2 in WB, IHC, IF/ICC, ELISA applications with reactivity to human, mouse, rat samples 18900-1-AP targets ZO-2 in WB, IHC, IF/ICC, IP, ELISA applications and shows reactivity with human, mouse, rat samples. Tested Applications Positive WB detected in: HepG2 cells, HEK-293 cells, HeLa cells, MCF-7 cells, mouse heart tissue, mouse brain tissue, rat brain tissue, NIH/3T3 cells, C6 cells Positive IHC detected in: human stomach tissueNote: suggested antigen retrieval withTE buffer pH 9.0;(*) Alternatively, antigen retrieval may be performed withcitrate buffer pH 6.0 Positive IF/ICC detected in: MCF-7 cells Recommended dilution Western Blot (WB): WB : 1:2000-1:12000 Immunohistochemistry (IHC): IHC : 1:200-1:800 Immunofluorescence (IF)/ICC: IF/ICC : 1:50-1:500 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). Specification Tested Reactivity: human, mouse, rat Cited Reactivity: human, mouse, rat, pig Host / Isotype: Rabbit / IgG Class: Polyclonal Type: Antibody Immunogen: CatNo: Ag13534 Product name: Recombinant human TJP2 protein Source: e coli. -derived, PGEX-4T Tag: GST Domain: 1-289 aa of BC027592 Sequence: MPVRGDRGFPPRRELSGWLRAPGMEELIWEQYTVTLQKDSKRGFGIAVSGGRDNPHFENGETSIVISDVLPGGPADGLLQENDRVVMVNGTPMEDVLHSFAVQQLRKSGKVAAIVVKRPRKVQVAALQASPPLDQDDRAFEVMDEFDGRSFRSGYSERSRLNSHGGRSRSWEDSPERGRPHERARSRERDLSRDRSRGRSLERGLDQDHARTRDRSRGRSLERGLDHDFGPSRDRDRDRSRGRSIDQDYERAYHRAYDPDYERAYSPEYRRGARHDARSRGPRSRSREH Predict reactive species Full Name: tight junction protein 2 (zona occludens 2) Calculated Molecular Weight: 134 kDa Observed Molecular Weight: 150 kDa GenBank Accession Number: BC027592 Gene Symbol: TJP2 Gene ID (NCBI): 9414 RRID: AB_2203584 Conjugate: Unconjugated Form: Liquid Purification Method: Antigen affinity purification UNIPROT ID: Q9UDY2 Storage Buffer: PBS with 0.02% sodium azide and 50% glycerol, pH 7.3. Storage Conditions: Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20 o C storage. 20ul sizes contain 0.1% BSA.