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Human CD99 +SDS-PAGE-1.jpg Human CD99 +SDS-PAGE-1.jpg Greater than 95% as determined by reducing SDS-PAGE.

Greater than 95% as determined by reducing SDS-PAGE.

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Recombinant Human CD99 (C-Fc, HEK293) is a human CD99 protein expressed in HEK293 cells with a C-terminal Fc tag. This protein is a type I transmembrane glycoprotein belonging to the CD99 family. Its extracellular domain lacks well-defined structural motifs, while the intracellular region is involved in signal transduction and regulates inflammatory processes such as neutrophil transendothelial migration. It exists in both type I and type II isoforms associated with distinct biological functions.

Synonyms: Recombinant Human CD99 (C-Fc, HEK293); CD99 Antigen; 12E7

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Product Details of Human CD99 (C-Fc, HEK293)

M.W : 37.2 KDa
SMILES Code : NONE
Synonyms :
Recombinant Human CD99 (C-Fc, HEK293); CD99 Antigen; 12E7

Safety of Human CD99 (C-Fc, HEK293)

Isoform Comparison

Biological Activity

Description
CD99 is a type I transmembrane glycoprotein and the founding member of the CD99 family of molecules. The extracellular domain of CD99 contains no identifiable motifs, its cytoplasmic region, although short, does have signal transduction capability. Cells known to express CD99 include fibroblasts, neutrophils, T cells, double positive thymocytes, CD34+ stem cells, monocytes and endothelial cells. Two types of CD99 isoforms have been classified. Native human CD99 is referred to as the long, or type I isoform. The best studied type II isoform shows an Asp-Gly substitution for the C terminal 27 amino acids. The type I and II isoforms have distinctive signal transduction pathways (FAKsrc for type I PI3K plus srcERK1/2 for type II), and mediate clearly different biological outcomes. Homophilic interaction between CD99 on the neutrophil and CD99 on the endothelial cell regulates the transendothelial migration of neutrophils during inflammation. Human CD99 has 48% aa sequence identity to mouse CD99.
Protein Species Human
Expression System Human Cells
Tag C-Fc
Protein Expression Interval Asp23-Asp122
Protein ID P14209
Endotoxin < 1 EU/µg as determined by LAL test.
Characteristics Lyophilized powder
Formulation Description Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
Reconstitution Method Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
For long-term storage, it is recommended to further dilute the product with a solution containing carrier proteins (e.g., 0.1% BSA, 10% FBS, or 5% HSA). For serum-free cultures or in vivo animal experiments where BSA, FBS, or HSA cannot be present in the cytokine preparation, trehalose may be used as an alternative carrier. Aliquots should be stored frozen at -20°C to -80°C.
Note: Low-adsorption tubes are recommended for aliquot storage, and repeated freeze-thaw cycles should be avoided. The dilution concentration for aliquoting should not be lower than 10 μg/mL, and the aliquot volume should be no less than 10 μL.
Aliquoted protein remains stable for up to 3 months when stored at ≤ -20°C.
 

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