CLDN4-specific antibody

Synonyms:Claudin-4|Clostridium perfringens enterotoxin receptor (CPE-R antibody, CPE-receptor)|Williams-Beuren syndrome chromosomal region 8 protein|CLDN4|CPER|CPETR1|WBSCR8 antibody
Catalogue No.:FNab01739Reactivity:Human, Mouse, Rat
Host:RabbitTested Application:ELISA, WB, IHC, IP
Clonality:polyclonalIsotype:IgG
Size Price
100µg Inquiry
Dispatch Time: About 3 working days
  • SPECIFICATIONS
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  • FAQS
Product Name
CLDN4-specific antibody
Catalogue No.
FNab01739
Size
100μg
Form
liquid
Purification
Immunogen affinity purified
Purity
≥95% as determined by SDS-PAGE
Clonality
polyclonal
Isotype
IgG
Storage
PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20℃ for 12 months(Avoid repeated freeze / thaw cycles.)
Immunogen
Immunogen
claudin 4
Alternative Names
Claudin-4|Clostridium perfringens enterotoxin receptor (CPE-R antibody, CPE-receptor)|Williams-Beuren syndrome chromosomal region 8 protein|CLDN4|CPER|CPETR1|WBSCR8 antibody
UniProt ID
O14493
Observed MW
22 kDa
Application
Tested Applications
ELISA, WB, IHC, IP
Recommended dilution
WB: 1:200-1:2000; IP: 1:200-1:1000; IHC: 1:20-1:200
Validated Images
mouse small intestine tissue were subjected to SDS PAGE followed by western blot with FNab01739(CLDN4-specific antibody) at dilution of 1:500
IP Result of anti-Claudin 4-specific (IP:FNab01739, 4ug; Detection:FNab01739 1:300) with human placenta tissue lysate 4400ug.
Immunohistochemistry of paraffin-embedded human breast cancer tissue slide using FNab01739(Claudin 4-specific Antibody) at dilution of 1:50
Background
Claudins are a family of proteins that are the most important components of the tight junctions, where they establish the paracellular barrier that controls the flow of molecules in the intercellular space between the cells of an epithelium. 23 claudins have been identified. They are small(20-27 kDa) proteins with very similar structure. They have four transmembrane domains, with the N-terminus and the C-terminus in the cytoplasm. This antibody is specifically against claudin 4.
How many times can antibodies be recycled?

First, usually it's not suggested to recycle antibodies. After use, buffer system of antibodies has changed. The storage condition of recycled antibodies for different customers also varies. Thus, the performance efficiency of recycled antibodies can’t be guaranteed. Besides, FineTest ever conducted the antibody recycling assay. Assay results show recycling times of different antibodies also varies. Usually, higher antibody titer allows more repeated use. Customers can determine based on experimental requirements.

Notes: After incubation, we recycle rest antibodies to centrifuge tube and store at 4℃. High titer antibodies can be stored for a minimum of one week. Reuse about three times.

What are components of FineTest antibody buffer?

Components of FineTest antibody buffer are usually PBS with proclin300 or sodium azide, BSA, 50% glycerol. Common preservative is proclin300 or sodium azide, which is widely applied in the lab and industry.

How about the storage temperature and duration of FineTest antibodies?

Most antibodies are stored at -20℃. Directly-labeled flow cytometry antibodies should be stored at 2 - 8℃. The shelf life is one year. If after sales issues for purchased antibodies appear, return or replacement is available. Usually, antibodies can be still used after the one-year warranty. We can offer technical support services.

Is dilution required for FineTest antibodies? What’s the dilute solution?

Directly-labeled flow cytometry antibodies are ready-to-use without dilution. Other antibodies are usually concentrated. Follow the dilution ratio suggested in the manual. Dilute solution for different experiments also varies. Common antibody dilution buffers are acceptable(e.g. PBST, TBST, antibody blocking buffer).

How to retrieve antibodies for immunohistochemistry?

Common retrieval buffers: Tris-EDTA Buffer(pH 9.0); Citrate Buffer(pH 6.0)

Heat induced antibody retrieval:

Method 1: Water-bath heating: Put the beaker with retrieval buffer and slide in the boiling water bath. Keep the boiling state for 15min. Naturally cool to room temperature;

Method 2: Microwave retrieval: Put the beaker with retrieval buffer and slide in the microwave oven. Heat at high power for 5min, Switch OFF for 3min, Heat at medium power for 5min. Naturally cool to room temperature.

How to choose secondary antibodies?

(1) Secondary antibodies react with primary antibodies. Thus, secondary antibodies should be against host species of primary antibodies. E.g. If the primary antibody is derived from rabbit, the relevant secondary antibody should be against rabbit. E.g. goat anti rabbit or donkey anti rabbit.

(2) Choose secondary antibody conjugates according to the experimental type, e.g. ELISA, WB, IHC etc. Common enzyme conjugated secondary antibodies are labelled by HRP, AP etc. Fluorescin or dye labelled secondary antibodies are applied in immunofluorescence and flow cytometry(e.g. FITC, Cy3).

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