Anti-Claudin 5/CLDN5 Antibody Picoband®

CLDN5 antibody

Boster Bio Anti-Claudin 5/CLDN5 Antibody catalog # RP1043. Tested in WB applications. This antibody reacts with Human, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance. Cited in 5 publication(s).

Product Info Summary

SKU: RP1043
Size: 100 μg/vial
Reactive Species: Human, Rat
Host: Rabbit
Application: WB

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Product Name

Anti-Claudin 5/CLDN5 Antibody Picoband®

View all CLDN5 Antibodies

SKU/Catalog Number

RP1043
PB0123 is an alternative SKU for this antibody, used in previous lots.

Size

100 μg/vial

Form

Lyophilized

Description

Boster Bio Anti-Claudin 5/CLDN5 Antibody catalog # RP1043. Tested in WB applications. This antibody reacts with Human, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.

Storage & Handling

Store at -20˚C for one year from date of receipt. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for six months. Avoid repeated freeze-thaw cycles.

Cite This Product

Anti-Claudin 5/CLDN5 Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # RP1043)

Host

Rabbit

Contents

Each vial contains 4mg Trehalose, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.

Clonality

Polyclonal

Isotype

Rabbit IgG

Immunogen

A synthetic peptide corresponding to a sequence at the C-terminus of human Claudin 5, different from the related mouse sequence by three amino acids and from the related rat sequence by four amino acids.

Cross-reactivity

No cross-reactivity with other proteins

Reactive Species

RP1043 is reactive to CLDN5 in Human, Rat

Observed Molecular Weight

23 kDa

Calculated molecular weight

23.1 kDa

Background of CLDN5

Claudin-5 (CLDN5) also known as BEC1, is a protein that in humans is encoded by the CLDN5 gene. By use of yeast artificial chromosomes, Claudin-5 is localized between polymorphic markers D22S944 and D22S941 on chromosome 22q11, both of which are deleted in more than 80% of VCFS patients. This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cell sheets. What's more, it plays a major role in tight junction-specific obliteration of the intercellular space.

Antibody Validation

Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence, and ELISA with known positive control and negative samples to ensure specificity and high affinity, including thorough antibody incubations.

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Applications

RP1043 is guaranteed for WB Boster Guarantee

Assay Dilutions Recommendation

The recommendations below provide a starting point for assay optimization. The actual working concentration varies and should be decided by the user.

Western blot, 0.1-0.5μg/ml, Rat, Human

Positive Control

WB: Rat Liver Tissue

Validation Images & Assay Conditions

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4 Customer Q&As for Anti-Claudin 5/CLDN5 Antibody Picoband®

Question

We are currently using anti-Claudin 5/CLDN5 antibody RP1043 for rat tissue, and we are happy with the WB results. The species of reactivity given in the datasheet says human, rat. Is it possible that the antibody can work on feline tissues as well?

Verified Customer

Verified customer

Asked: 2020-04-28

Answer

The anti-Claudin 5/CLDN5 antibody (RP1043) has not been validated for cross reactivity specifically with feline tissues, though there is a good chance of cross reactivity. We have an innovator award program that if you test this antibody and show it works in feline you can get your next antibody for free. Please contact me if I can help you with anything.

Boster Scientific Support

Answered: 2020-04-28

Question

Our lab were content with the WB result of your anti-Claudin 5/CLDN5 antibody. However we have observed positive staining in right lung tight junction. cell using this antibody. Is that expected? Could you tell me where is CLDN5 supposed to be expressed?

Verified Customer

Verified customer

Asked: 2020-04-16

Answer

Based on literature, right lung does express CLDN5. Generally CLDN5 expresses in cell junction, tight junction. cell. Regarding which tissues have CLDN5 expression, here are a few articles citing expression in various tissues:
Brain, and Lung, Pubmed ID: 15489334
Prostate, Pubmed ID: 14702039

Boster Scientific Support

Answered: 2020-04-16

Question

We have been able to see staining in human right lung. Are there any suggestions? Is anti-Claudin 5/CLDN5 antibody supposed to stain right lung positively?

Verified Customer

Verified customer

Asked: 2019-09-10

Answer

According to literature right lung does express CLDN5. According to Uniprot.org, CLDN5 is expressed in right lung, prostate, brain lung, among other tissues. Regarding which tissues have CLDN5 expression, here are a few articles citing expression in various tissues:
Brain, and Lung, Pubmed ID: 15489334
Prostate, Pubmed ID: 14702039

Boster Scientific Support

Answered: 2019-09-10

Question

I would like using your anti-Claudin 5/CLDN5 antibody for tight junction interactions studies. Has this antibody been tested with western blotting on tissue lysate? We would like to see some validation images before ordering.

Verified Customer

Verified customer

Asked: 2019-05-24

Answer

Thanks for your inquiry. This RP1043 anti-Claudin 5/CLDN5 antibody is validated on rat liver tissue, tissue lysate. It is guaranteed to work for WB in human, rat. Our Boster guarantee will cover your intended experiment even if the sample type has not been be directly tested.

Boster Scientific Support

Answered: 2019-05-24

Order DetailsPrice
RP1043

100μg

$370
RP1043-Fluoro488

100 μg Fluoro488 conjugated (liquid)

$570
RP1043-Fluoro550

100 μg Fluoro550 conjugated (liquid)

$570
RP1043-Fluoro594

100 μg Fluoro594 conjugated (liquid)

$570
RP1043-Fluoro647

100 μg Fluoro647 conjugated (liquid)

$670
RP1043-APC

100 μg APC conjugated (liquid)

$820
RP1043-FITC

100 μg FITC conjugated (liquid)

$570
RP1043-Cy3

100 μg Cy3 conjugated (liquid)

$570
RP1043-Biotin

100 μg Biotin conjugated (liquid)

$570
RP1043-HRP

100 μg HRP conjugated (liquid)

$570
RP1043-PE

100 μg PE conjugated (liquid)

$820
RP1043-carrier-free

Carrier Free

$370
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Free Secondary Antibody

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RP1043
Buy one primary antibody get one 0.5ml HRP or Biotin secondary antibody for free.
*Sample sizes are prepared on demand and will take extra lead time. (cannot be conjugated)
$370.00

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We promise all of our products perform as described in datasheets.

This product is for Research Use Only. Not for use in diagnostic procedures.

Update date: Apr 12, 2026