Recombinant Human CD81 antigen (CD81), partial, Homo sapiens (Human), Mammalian cell, C-terminal hFc1-tagged, 38.7kDa, purity >85% as determined by SDS-PAGE.
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Recombinant Human CD81 antigen (CD81), partial

Recombinant Human CD81 antigen (CD81), partial — recombinant protein from Homo sapiens (Human), expressed in Mammalian cell. Purity >85%.

SKU: BCRECP-000313 Categories: ,
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Product Specifications

Product SkuBCRECP-000313
Product DescriptionRecombinant Human CD81 antigen (CD81) Protein is expressed from Mammalian cell with C-terminal hFc1-tagged. It contains 113-201aa. [Accession | P60033].
Uniprot No.P60033
Gene NamesCD81
PurityGreater than 85% as determined by SDS-PAGE.
Expression SystemMammalian cell
Expression Region113-201aa
SpeciesHomo sapiens (Human)
Tag InfoC-terminal hFc1-tagged
Molecular weight38.7kDa
ActivityPlease contact us to obtain bioactivity data.
BufferIf the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.
StorageStore at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Research AreasImmunology

Function

(Microbial infection) Specifically required for Plasmodium falciparum infectivity of hepatocytes, controlling sporozoite entry into hepatocytes via the parasitophorous vacuole and subsequent parasite differentiation to exoerythrocytic forms.

Biological Context

Subcellular Location: Cell membrane (Multi-pass membrane protein); Basolateral cell membrane (Multi-pass membrane protein)
Tissue Specificity: Expressed on B cells (at protein level). Expressed in hepatocytes (at protein level). Expressed in monocytes/macrophages (at protein level). Expressed on both naive and memory CD4-positive T cells (at protein level)
Disease Association: Immunodeficiency, common variable, 6 (CVID6) : A primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B-cells is usually in the normal range, but can be low. [The disease is caused by variants affecting the gene represented in this entry]

Product Specifications

Recombinant Human CD81 antigen (CD81), partial is a recombinant protein from Homo sapiens (Human), expressed in Mammalian cell, covering amino acids 113-201aa, with C-terminal hFc1-tagged tag, molecular weight 38.7kDa, purity Greater than 85% as determined by SDS-PAGE.. Suitable for ELISA and Western Blot applications.

SDS-PAGE: Single band at expected molecular weight confirming purity.

ELISA: Suitable as coating antigen or detection standard.

Western Blot: Compatible with standard Western Blot protocols.

Protein Interaction: Validated for SPR (Surface Plasmon Resonance) and BLI (Bio-Layer Interferometry) studies.

Shipping: Shipped at ambient temperature. Lyophilized protein is stable during transit.

Storage: Store lyophilized protein at -20°C to -80°C. Reconstituted protein should be aliquoted and stored at -80°C. Avoid repeated freeze-thaw cycles.

Shelf Life: 12 months from date of receipt when stored as recommended.

Shipping Time: Orders placed before 2 PM EST ship same day. International orders typically deliver within 5-10 business days.

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Protein Biology

Function

(Microbial infection) Specifically required for Plasmodium falciparum infectivity of hepatocytes, controlling sporozoite entry into hepatocytes via the parasitophorous vacuole and subsequent parasite differentiation to exoerythrocytic forms

Subcellular Location

Cell membrane (Multi-pass membrane protein); Basolateral cell membrane (Multi-pass membrane protein)

Disease Association

Immunodeficiency, common variable, 6 (CVID6) : A primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B-cells is usually in the normal range, but can be low. [The disease is caused by variants affecting the gene represented in this entry]

Tissue Specificity

Expressed on B cells (at protein level) (PubMed:20237408). Expressed in hepatocytes (at protein level) (PubMed:12483205). Expressed in monocytes/macrophages (at protein level) (PubMed:12796480). Expressed on both naive and memory CD4-positive T cells (at protein level) (PubMed:22307619)

Subunit

(Microbial infection) Plays a critical role in HCV attachment and/or cell entry by interacting with HCV E1/E2 glycoproteins heterodimer

Gene: CD81  |  Organism: Homo sapiens  |  Synonyms: 26 kDa cell surface protein TAPA-1; Target of the antiproliferative antibody 1; Tetraspanin-28
Key Publications

Frequently Asked Questions

How do I order or inquire about this product?

Fill out the Online Inquiry form with your required quantity and specifications. You can also email sales@biocrestsci.com. Our team typically responds within 4 business hours with a quote and availability confirmation.

What is the shipping and delivery time?

Orders placed before 2 PM EST ship the same day. Domestic (US) delivery typically takes 2-3 business days. International orders deliver within 5-10 business days. All products are shipped at ambient temperature with appropriate packaging to ensure stability.

How should I store this recombinant protein?

Lyophilized proteins should be stored at -20°C to -80°C upon receipt. After reconstitution, aliquot and store at -80°C. Avoid repeated freeze-thaw cycles. Shelf life is 12 months from date of receipt when stored as recommended.

What quality controls are performed on your products?

Each product undergoes SDS-PAGE purity analysis (typically >85-95%), endotoxin testing, and bioactivity validation. Products are validated for ELISA, Western Blot, and SPR/BLI applications as specified on this product page. A Certificate of Analysis (CoA) is available upon request.

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