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Recombinant Human CD81 antigen (CD81), partial (Active)

CAT: 0399-CSB-MP004960HUd7-01Size: 10 µgDry Ice: NoHazardous: No
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CAT#:0399-CSB-MP004960HUd7-01Size:10 µg
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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Product Name Alternative
TAPA1; TSPAN28
Abbreviation
Recombinant Human CD81 protein, partial (Active)
Gene Name
CD81
UniProt
P60033
Expression Region
113-201aa
Organism
Homo sapiens (Human)
Target Sequence
FVNKDQIAKDVKQFYDQALQQAVVDDDANNAKAVVKTFHETLDCCGSSTLTALTTSVLKNNLCPSGSNIISNLFKEDCHQKIDDLFSGK
Tag
C-terminal 10xHis-tagged
Type
Active Protein & In Stock Protein
Source
Mammalian cell
Field of Research
Cancer
Relevance
Structural component of specialized membrane microdomains known as tetraspanin-enriched microdomains (TERMs), which act as platforms for receptor clustering and signaling. Essential for trafficking and compartmentalization of CD19 receptor on the surface of activated B cells.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Purity
Greater than 95% as determined by SDS-PAGE.
Activity
Yes
Bioactivity
Measured by its binding ability in a functional ELISA. Immobilized Human CD81 at 2 μg/mL can bind Anti-CD81 recombinant antibody (CSB-RA004960MA1HU), the EC50 is 4.166-5.578 ng/mL.
Form
Lyophilized powder
Buffer
Lyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Molecular Weight
11.1 kDa
References & Citations
"TAPA-1, the target of an antiproliferative antibody, defines a new family of transmembrane proteins." Oren R., Takahashi S., Doss C., Levy R., Levy S. Mol. Cell. Biol. 10:4007-4015 (1990)
Storage Conditions
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Protein Length
Partial

UniProtKB · P60033

CD81 antigen

CD81_HUMAN · Homo sapiens

View on UniProt ↗
Primary accession
P60033
Review status
UniProtKB reviewed (Swiss-Prot)
Gene
CD81
Protein existence
1: Evidence at protein level
Organism
Homo sapiens (Human)
Taxonomy ID
9606
Alternative names
—
EC number
—
Processing
—
Secondary accessions
P18582, Q5U0J6
Protein keywords

Technical term

3D-structureProteomics identificationReference proteome

Biological process

Adaptive immunityHost-virus interactionImmunity

Cellular component

Cell membraneMembrane

PTM

Disulfide bond

Molecular function

Host cell receptor for virus entryReceptor

Ligand

Lipid-binding

Domain

TransmembraneTransmembrane helix

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