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AB114189

Recombinant Human Occludin protein

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(1 Publication)

Recombinant Human Occludin protein is a Human Full Length protein, in the 1 to 522 aa range, expressed in Wheat germ, suitable for SDS-PAGE, ELISA, WB.

View Alternative Names

Occludin, OCLN

1 Images
SDS-PAGE - Recombinant Human Occludin protein (AB114189)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human Occludin protein (AB114189)

ab114189 analysed on a 12.5% SDS-PAGE gel stained with Coomassie Blue.

Key facts

Expression system

Wheat germ

Tags

GST tag N-Terminus

Applications

WB, SDS-PAGE, ELISA

applications

Biologically active

No

Accession

Q16625

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 8 Constituents: 0.79% Tris HCl, 0.3% Glutathione

storage-buffer

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "ELISA": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "WB": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

Sequence info

[{"sequence":"MSSRPLESPPPYRPDEFKPNHYAPSNDIYGGEMHVRPMLSQPAYSFYPEDEILHFYKWTSPPGVIRILSMLIIVMCIAIFACVASTLAWDRGYGTSLLGGSVGYPYGGSGFGSYGSGYGYGYGYGYGYGGYTDPRAAKGFMLAMAAFCFIAALVIFVTSVIRSEMSRTRRYYLSVIIVSAILGIMVFIATIVYIMGVNPTAQSSGSLYGSQIYALCNQFYTPAATGLYVDQYSYHYCVVDPQEAIAIVLGFMIIVAFALIIFFAVKTRRKMDRYDKSNILWDKEHIYDEQPPNVEEWVKNVSAGTQDVPSPPSDYVERVDSPMAYSSNGKVNDKRFYPESSYKSTPVPEVVQELPLTSPVDDFRQPRYSSGGNFETPSKRAPAKGRAGRSKRTEQDHYETDYTTGGESCDELEEDWIREYPPITSDQQRQLYKRNFDTGLQEYKSLQSELDEINKELSRLDKELDDYREESEEYMAAADEYNRLKQVKGSADYKSKKNHCKQLKSKLSHIKKMVGDYDRQKT","proteinLength":"Full Length","predictedMolecularWeight":"83.53 kDa","actualMolecularWeight":null,"aminoAcidEnd":522,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":"Wheat germ","accessionNumber":"Q16625","tags":[{"tag":"GST","terminus":"N-Terminus"}]}]

Properties and storage information

Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Occludin is a protein that plays an important mechanical role in forming tight junctions which are specialized connections between neighboring cell membranes. Alternative names for this target include occludin-1. The occludin protein has a molecular weight of approximately 65 kDa. It is expressed in a variety of tissues but levels tend to be high in epithelial and endothelial cells where tight junctions are essential for barrier functions. Occludin acts as integral membrane protein contributing to the complex structures that seal spaces between cells.
Biological function summary

Occludin serves as an important component in maintaining cell-to-cell adhesion within tight junction complexes. It interacts with other tight junction proteins such as claudins and junctional adhesion molecules to regulate paracellular permeability. These interactions help maintain selective barrier properties of epithelial and endothelial layers preventing the passage of large molecules and pathogens while allowing passage of ions and small molecules. Occludin stabilizes the tight junctions by interacting with the cytoskeleton and signaling proteins that are important for tight junction assembly and maintenance.

Pathways

Occludin functions prominently in the regulation of tight junction integrity and barrier function. It participates in pathways such as the tight junction signaling pathway and the paracellular transport pathway. Occludin interacts with ZO-1 a scaffolding protein bridging its interaction with the actin cytoskeleton which supports the structural organization and function of tight junctions. This connectivity allows for regulation of the permeability and transport across the epithelial barrier.

Disruptions in occludin function are connected to conditions such as inflammatory bowel disease (IBD) and some cancers. In IBD abnormal occludin expression can compromise intestinal barrier function leading to increased intestinal permeability and an inflammatory response. In certain cancers loss of occludin expression is linked to increased invasiveness and metastasis due to weakened cell adhesion. The dysfunction of proteins like ZO-1 which interact with occludin in these pathways also contributes to these pathological states highlighting the importance of occludin's regulatory roles in maintaining cellular barrier integrity.

Specifications

Form

Liquid

General info

Function

May play a role in the formation and regulation of the tight junction (TJ) paracellular permeability barrier. It is able to induce adhesion when expressed in cells lacking tight junctions.. (Microbial infection) Acts as a coreceptor for hepatitis C virus (HCV) in hepatocytes.

Sequence similarities

Belongs to the ELL/occludin family.

Post-translational modifications

Dephosphorylated by PTPRJ. The tyrosine phosphorylation on Tyr-398 and Tyr-402 reduces its ability to interact with TJP1. Phosphorylation at Ser-490 also attenuates the interaction with TJP1.. (Microbial infection) Cleaved by S.pyogenes SpeB protease; leading to its degradation (PubMed:23532847). Degradation by SpeB promotes bacterial translocation across the host epithelial barrier (PubMed:23532847).

Product protocols

Target data

May play a role in the formation and regulation of the tight junction (TJ) paracellular permeability barrier. It is able to induce adhesion when expressed in cells lacking tight junctions.. (Microbial infection) Acts as a coreceptor for hepatitis C virus (HCV) in hepatocytes.
See full target information OCLN

Publications (1)

Recent publications for all applications. Explore the full list and refine your search

Virulence 9:879-894 PubMed29726306

2018

Secreted Giardia intestinalis cysteine proteases disrupt intestinal epithelial cell junctional complexes and degrade chemokines.

Applications

Unspecified application

Species

Unspecified reactive species

Jingyi Liu,Showgy Ma'ayeh,Dimitra Peirasmaki,Britta Lundström-Stadelmann,Lars Hellman,Staffan G Svärd
View all publications

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