Recombinant Human Claudin-9 (CLDN9) Protein (His), Active

Name: Recombinant Human Claudin-9 (CLDN9) Protein (His), Active
Brand: Beta LifeScience
SKU: BLC-05747P
Availability: InStock

this product is detected by Mouse anti-6*His monoclonal antibody.

Activity Measured by its binding ability in a functional ELISA. Immobilized Human CLDN9 at 10 μg/ml can bind Anti-CLDN6/9 recombinant antibody , the EC 50 is 24.93-35.47 ng/mL. Biological Activity Assay

Collections: All products, High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Claudin-9 (CLDN9) Protein (His), Active is produced by our Mammalian cell expression system. This is a full length protein.
Endotoxin	Less than 1.0 EU/ug as determined by LAL method.
Activity	Measured by its binding ability in a functional ELISA. Immobilized Human CLDN9 at 10 μg/mL can bind Anti-CLDN6/9 recombinant antibody , the EC 50 is 24.93-35.47 ng/mL.
Uniprotkb	O95484
Target Symbol	CLDN9
Species	Homo sapiens (Human)
Expression System	Mammalian cell
Tag	C-10His
Target Protein Sequence	MASTGLELLGMTLAVLGWLGTLVSCALPLWKVTAFIGNSIVVAQVVWEGLWMSCVVQSTGQMQCKVYDSLLALPQDLQAARALCVIALLLALLGLLVAITGAQCTTCVEDEGAKARIVLTAGVILLLAGILVLIPVCWTAHAIIQDFYNPLVAEALKRELGASLYLGWAAAALLMLGGGLLCCTCPPPQVERPRGPRLGYSIPSRSGASGLDKRDYV
Expression Range	1-217aa
Protein Length	Full Length
Mol. Weight	24.2 kDa
Form	Lyophilized powder
Buffer	Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Plays a major role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity.; (Microbial infection) Acts as a receptor for hepatitis C virus (HCV) entry into hepatic cells.
Subcellular Location	Cell junction, tight junction. Cell membrane; Multi-pass membrane protein.
Protein Families	Claudin family
Database References	HGNC: 2051 OMIM: 615799 KEGG: hsa:9080 STRING: 9606.ENSP00000398017 UniGene: PMID: 25281028 Claudins 6, 7, and 9 expressions are closely related to gastric carcinogenesis. PMID: 19960275 Mouse studies suggest that claudin-9 deficiency may cause hearing loss not only in mice but also in humans. PMID: 19696885 Residues N38 and V45 in the first extracellular loop (EL1) of CLDN9 are necessary for HCV entry. PMID: 17804490 CLDN9, clustered with CLDN6 at human chromosome 16p13.3, is a four-transmembrane protein with WWCC motif, defined by W-X(17-22)-W-X(2)-C-X(8-10)-C. PMID: 12736707

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.