ICOS Protein, Mouse (HEK293, His)
Based on 1 Customer Validation
ICOS proteins optimize T cell responses to foreign antigens, promoting proliferation, lymphokine secretion, upregulation of cell-cell interaction molecules, and efficient B cell antibody secretion. ICOS is essential for efficient communication of T cells and B cells and for normal antibody responses to T cell-dependent antigens. ICOS Protein, Mouse (HEK293, His) is the recombinant mouse-derived ICOS protein, expressed by HEK293 , with C-6*His labeled tag.
- Species: Mouse
- Source: HEK293
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Storage:Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
Biological Activity
Description
ICOS proteins optimize T cell responses to foreign antigens, promoting proliferation, lymphokine secretion, upregulation of cell-cell interaction molecules, and efficient B cell antibody secretion. ICOS is essential for efficient communication of T cells and B cells and for normal antibody responses to T cell-dependent antigens. ICOS Protein, Mouse (HEK293, His) is the recombinant mouse-derived ICOS protein, expressed by HEK293 , with C-6*His labeled tag.
Background
The ICOS protein enhances all fundamental T-cell responses to foreign antigens, including proliferation, secretion of lymphokines, up-regulation of cell-cell interaction molecules, and providing effective help for antibody secretion by B-cells. It is essential for facilitating efficient communication between T and B-cells and for normal antibody responses to T-cell dependent antigens. Although it does not increase the production of interleukin-2, it superinduces the synthesis of interleukin-10. Additionally, it prevents apoptosis of pre-activated T-cells and plays a critical role in CD40-mediated class switching of immunoglobulin isotypes. ICOS exists as a homodimer, connected by disulfide bonds.
Technical Parameters
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Species Mouse
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Source HEK293
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Tag C-6*His
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Accession
Q9WVS0 (E21-L142)
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Molecular Construction
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N-term
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ICOS (E21-L142)
Accession # Q9WVS0 -
6*His
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C-term
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Protein Length
Extracellular Domain
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Synonyms
ICOS; CD278; Inducible T Cell Costimulator; Inducible T-Cell Co-Stimulator; Activation-Inducible Lymphocyte Immunomediatory Molecule; Inducible Costimulator; Inducible T-Cell Costimulator; CD278 Antigen; AILIM; CVID1
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AA Sequence
EINGSADHRMFSFHNGGVQISCKYPETVQQLKMRLFREREVLCELTKTKGSGNAVSIKNPMLCLYHLSNNSVSFFLNNPDSSQGSYYFCSLSIFDPPPFQERNLSGGYLHIYESQLCCQLKL
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Predicted Molecular Mass
14.7 kDa
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Molecular Weight
Approximately 16-30 kDa, based on SDS-PAGE under reducing conditions.
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Glycosylation
Yes
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Purity
≥ 95%, as determined by reducing SDS-PAGE.
Product Properties
Lyophilized powder.
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.
<1 EU/μg, determined by LAL method.
It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).
Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
Room temperature in continental US; may vary elsewhere.
Documentation
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Data Sheet (235 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Handling Instructions (2659 KB)
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)