Knockout Tested Rabbit Recombinant Monoclonal Claudin 4 antibody. Suitable for IP, WB, IHC-P and reacts with Human, Mouse samples. Cited in 12 publications.
IgG
Rabbit
pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Liquid
Monoclonal
IP | WB | IHC-P | |
---|---|---|---|
Human | Tested | Tested | Tested |
Mouse | Expected | Tested | Not recommended |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/30 | Notes Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info Use at an assay dependent concentration. | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/1000 | Notes - |
Species Mouse | Dilution info 1/1000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/4000 | Notes Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info - | Notes Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. |
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Can associate with other claudins to regulate tight junction structural and functional strand dynamics (PubMed:35773259, PubMed:36008380). May coassemble with CLDN8 into tight junction strands containing anion-selective channels that convey paracellular chloride permeability in renal collecting ducts (By similarity) (PubMed:36008380). May integrate into CLDN3 strands to modulate localized tight junction barrier properties (PubMed:35773259, PubMed:36008380). May disrupt strand assembly of channel-forming CLDN2 and CLDN15 and inhibit cation conductance (PubMed:35773259, PubMed:36008380). Cannot form tight junction strands on its own (PubMed:35773259, PubMed:36008380).
CPER, CPETR1, WBSCR8, WBSCR8, CPETR1, CPER, CLDN4, Claudin-4, Clostridium perfringens enterotoxin receptor, Williams-Beuren syndrome chromosomal region 8 protein, CPE-R, CPE-receptor
Knockout Tested Rabbit Recombinant Monoclonal Claudin 4 antibody. Suitable for IP, WB, IHC-P and reacts with Human, Mouse samples. Cited in 12 publications.
IgG
Rabbit
pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Liquid
Monoclonal
EPRR17575
Affinity purification Protein A
The mouse recommendation is based on the WB results. We do not guarantee IHC-P for mouse.
Blue Ice
1-2 weeks
+4°C
-20°C
Upon delivery aliquot
Avoid freeze / thaw cycle
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
This product is a recombinant monoclonal antibody, which offers several advantages including:
For more information, read more on recombinant antibodies.
This supplementary information is collated from multiple sources and compiled automatically.
Claudin-4 also known as CLDN4 is a protein essential for tight junctions which are critical in maintaining the permeability barrier of epithelial cells. The protein has a molecular mass of approximately 22 kDa. Claudin-4 expresses notably in epithelial cells of various tissues including the kidney lung and gastrointestinal tract. In addition to its presence in normal tissues claudin-4 can also exhibit heightened expression in certain cancerous tissues making it a subject of interest in oncology research.
Claudin-4 plays a significant role in paracellular transport and cell polarity. By assembling into complexes with other claudins and tight junction proteins claudin-4 regulates the selective permeability and homeostasis across cell layers. It functions as a component of tight junction strands contributing to their barrier properties. Interaction with proteins such as occludin and ZO-1 further defines its role in tight junction structure and function.
Claudin-4 participates in critical biological processes such as epithelial cell signaling and apoptosis regulation. It interfaces with the epithelial-to-mesenchymal transition (EMT) pathway where claudin-4 expression influences cellular adhesion and motility. Claudin-4 also interacts with related claudin proteins in these pathways contributing to structural arrangement and pathway signaling precision.
Claudin-4 has associations with several types of cancers including pancreatic and ovarian cancer. Its consistent overexpression in these conditions suggests its involvement in tumorigenesis and metastasis. In the context of ovarian cancer claudin-4 may interact with proteins such as mesothelin which plays a role in cell adhesion and tumor progression. Investigating claudin-4's involvement in cancer can provide insights into potential therapeutic targets and diagnostic markers.
We have tested this species and application combination and it works. It is covered by our product promise.
We have not tested this specific species and application combination in-house, but expect it will work. It is covered by our product promise.
This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
We do not recommend this combination. It is not covered by our product promise.
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In the unlikely event of one of our products not working as expected, you are covered by our product promise.
Full details and terms and conditions can be found here:
Terms & Conditions.
Immunohistochemical analysis of paraffin-embedded human colon tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Membrane and staining on epithelial cells of human colon is observed.
Counter stained with Hematoxylin.
Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Blocking/Dilution buffer: 5% NFDM/TBST.
Exposure time: Lane 1/2/3/6: 1 minute; Lane 4: 30 seconds; Lane 5: 3 minutes.
Lanes 1 - 2: Western blot - Anti-Claudin 4 antibody [EPRR17575] (ab210796) at 1/2000 dilution
Lanes 3 - 6: Western blot - Anti-Claudin 4 antibody [EPRR17575] (ab210796) at 1/1000 dilution
Lane 1: LNCaP (Human prostate cancer cell line) whole cell lysate at 10 µg
Lane 2: PC-3 (Human prostate adenocarcinoma cell line) whole cell lysate at 10 µg
Lane 3: SW480 (Human colorectal adenocarcinoma cell line) whole cell lysate at 10 µg
Lane 4: MCF7 (Human breast adenocarcinoma cell line) whole cell lysate at 10 µg
Lane 5: SK-OV-3 (Human ovarian cancer cell line) whole cell lysate at 10 µg
Lane 6: NIH:OVCAR-3 (Human ovary adenocarcinoma cell line) whole cell lysate at 10 µg
All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/100000 dilution
Predicted band size: 22 kDa
Observed band size: 18 kDa
Immunohistochemical analysis of paraffin-embedded human endometrium tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Membrane staining on epithelial cells of human endometrium is observed.
Counter stained with Hematoxylin.
Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Immunohistochemical analysis of paraffin-embedded human liver tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Weak membrane staining on biliary epithelium of human liver is observed.
Counter stained with Hematoxylin.
Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Immunohistochemical analysis of paraffin-embedded human cholangiocarcinoma tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Membrane staining on human cholangiocarcinoma is observed.
Counter stained with Hematoxylin.
Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Claudin 4 was immunoprecipitated from 1mg of SW480 (Human colorectal adenocarcinoma cell line) whole cell lysate with ab210796 at 1/30 dilution.
Western blot was performed from the immunoprecipitate using ab210796 at 1/1000 dilution.
VeriBlot for IP Detection Reagent (HRP) (VeriBlot for IP Detection Reagent (HRP) ab131366), was used for detection at 1/10000 dilution.
Lane 1: SW480 whole cell lysate 10ÎĽg (Input).
Lane 2: ab210796 IP in SW480 whole cell lysate.
Lane 3: Rabbit monoclonal IgG (Rabbit IgG, monoclonal [EPR25A] - Isotype Control ab172730) instead of ab210796 in SW480 whole cell lysate.
Blocking and dilution buffer and concentration: 5% NFDM/TBST.
Exposure time: 30 seconds.
All lanes: Immunoprecipitation - Anti-Claudin 4 antibody [EPRR17575] (ab210796)
Predicted band size: 22 kDa
Immunohistochemical analysis of paraffin-embedded human hepatocellular carcinoma tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Negative staining on human hepatocellular carcinoma.
Counter stained with Hematoxylin.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Immunohistochemical analysis of paraffin-embedded human breast cancer tissue labeling Claudin 4 with ab210796 at 1/4000 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Membrane staining on epithelial cells of human breast cancer is observed.
Counter stained with Hematoxylin.
Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/500 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
False colour image of Western blot: Anti-Claudin 4 antibody [EPRR17575] staining at 1/1000 dilution, shown in green; Mouse anti-GAPDH antibody [6C5] (Anti-GAPDH antibody [6C5] - Loading Control ab8245) loading control staining at 1/20000 dilution, shown in red. In Western blot, ab210796 was shown to bind specifically to Claudin 4. A band was observed at 17 kDa in wild-type MCF7 cell lysates with no signal observed at this size in CLDN4 knockout cell line ab274946 (knockout cell lysate ab275004). To generate this image, wild-type and CLDN4 knockout MCF7 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in fluorescent western blot (TBS-based) blocking solution before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution.
All lanes: Western blot - Anti-Claudin 4 antibody [EPRR17575] (ab210796) at 1/1000 dilution
Lane 1: Wild-type MCF7 cell lysate at 20 µg
Lane 3: PC-3 cell lysate at 20 µg
Lane 4: U-2 OS cell lysate at 20 µg
Lane 5: SW480 cell lysate at 20 µg
All lanes: Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution
Performed under reducing conditions.
Predicted band size: 22 kDa
Observed band size: 17 kDa
Blocking and diluting buffer and concentration: 5% NFDM/TBST
The identity of the higher MW band at approximately 35 kDa is unknown.
All lanes: Western blot - Anti-Claudin 4 antibody [EPRR17575] (ab210796) at 1/1000 dilution
All lanes: 4T1 (mouse mammary gland carcinoma epithelial cell), whole cell lysate at 20 µg
All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/100000 dilution
Predicted band size: 22 kDa
Observed band size: 18 kDa
Exposure time: 3min
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