Lyophilized from Phosphate Buffered Saline, pH 7.4, with 8% Trehalose (0.22µm filter sterilized).
Endotoxin Level
<1 EU/µg of the protein by LAL method.
Storage
Shipped at 4°C. Lyophilized: Store at -20°C to -80°C up to 1 year from the date of receipt. Reconstituted: Aliquot and store at -20°C for 3 months or 2-8°C for up to 1 week. Avoid freeze/thaw cycles.
Synonyms
T-cell-specific surface glycoprotein CD28, TP44
Disclaimer
This product is for research use only. It is not intended for diagnostic or therapeutic use.
Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291)
Tris-Bis PAGE of Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291) under reducing conditions confirms that purity is greater than 95%.
Standard Curve - Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291)
ELISA examination of immobilized Anti-CD28 Antibody, hFc Tag, (2 µg/mL) binding Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291): EC50 =24.4ng/mL.
Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291)
Recombinant Human CD28 Protein (Biotin) (N-terminal His and Avi Tag) (A330291) binding to Human B7-1 (Human Fc Tag) on a CM5 Chip via Protein A, analyzed by surface plasmon resonance (SPR; Biacore T200). Affinity constant = 41.59 µM.
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Proteins predicted to interact with CD28
Predicted protein interactions based upon String database. Revelancy score correlates with probability of interaction.
