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Invitrogen
Human Claudin 18 (aa 191-261) Control Fragment Recombinant Protein
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Product Details
RP-91184
Applications
Tested Dilution
Publications
Product Specifications
Species
Human
Expression System
E. coli
Amino acid sequence
MMCIACRGLAPEETNYKAVSYHASGHSVAYKPGGFKASTGFGSNTKNKKIYDGGARTEDEVQSYPSKHDYV
Tag
His-ABP-tag
Class
Recombinant
Type
Protein
Purity
>80% by SDS-PAGE and Coomassie blue staining
Conjugate
Form
Liquid
Concentration
≥5.0 mg/mL
Purification
purified
Storage buffer
PBS/1M urea, pH 7.4
Contains
no preservative
Storage conditions
-20°C, Avoid Freeze/Thaw Cycles
Product Specific Information
Highest antigen sequence indentity to the following orthologs: Mouse (80%), Rat (80%).
This recombinant protein control fragment may be used for blocking experiments. In IHC/ICC and WB experiments, we recommend a 100x molar excess of the protein fragment control based on the concentration and the molecular weight. Pre-incubate the antibody-protein control fragment mixture for 30 min at room temperature.
Target Information
Claudin-18 is a tight junction protein expressed as lung-and stomach-specific isoforms which are generated by alternative splicing of the claudin-18 gene. The lung-specific form is a downstream target gene regulated by the T/EBP/NKX2.1 transcription factor. A splice variant lacking the C-terminal cytoplasmic domain also exists in mouse, but has not been confirmed in human. Human claudin-18 demonstrates 88% amino acid sequence identity to the mouse protein. Immunohistochemical studies have demonstrated complete membrane localization of claudin-18 in lung and stomach epithelial cells, while electron microscopy has shown that it is concentrated in the cell-cell borders of these cells. These features suggest a potentially important role for claudin-18 in the structure and function of tight junctions in the lung and stomach. Claudin-18 expression has also been reported in the inner ear.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: Claudin-18; surfactant associated 5; surfactant associated protein J; surfactant, pulmonary associated protein J
Gene Aliases: CLDN18; SFTA5; SFTPJ; UNQ778/PRO1572
UniProt ID: (Human) P56856
Entrez Gene ID: (Human) 51208
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