Recombinant Human VCAM-1/CD106 Protein, CF Summary
Details of Functionality
Measured by the ability of the immobilized protein to support the adhesion of U937 human histiocytic lymphoma cells. When 5 x 104 cells/well are added to human VCAM-1 coated plates (10 µg/mL with 100 µL/well), >85% cells will adhere after 1 hour incubation at 37 °C. Optimal dilutions should be determined by each laboratory for each application.
Source
Mouse myeloma cell line, NS0-derived human VCAM-1/CD106 protein Phe25-Glu698, with a substitution of Arg322Gly and an N-terminal Met
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<1.0 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
74 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
90-95 kDa, reducing conditions
Publications
Read Publications using 809-VR in the following applications:
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS containing Calcium and Magnesium with Sorbitol.
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 1 mg/mL in sterile, deionized water.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human VCAM-1/CD106 Protein, CF
CD106 antigen
CD106
DKFZp779G2333
INCAM-100
L1CAM
MGC99561
vascular cell adhesion molecule 1
vascular cell adhesion protein 1
V-CAM 1
VCAM1
VCAM-1
Background
Human VCAM-1 (CD106), a member of the immunoglobulin superfamily, is a cell surface protein expressed by activated endothelial cells and certain leukocytes (such as macrophages). VCAM-1 expression is induced by IL-1 beta , IL-4, TNF-alpha and IFN‑ gamma . VCAM-1 binds to leukocyte integrins VLA-4 and alpha 4 beta 7.
During the inflammatory adhesion mechanism, activated integrins halt rolling leukocytes and attach them firmly to the vascular endothelium. They do this by binding to their ligands, for example VCAM-1, on endothelium. The VCAM-1: VLA-4/ alpha 4 beta 7 interaction is also thought to be involved in the extravasation of white blood cells through the blood vessel wall to sites of inflammation.
ELISA techniques have shown that detectable levels of soluble VCAM-1 are present in the biological fluids of apparently normal individuals. Furthermore, a number of studies have reported that levels of VCAM-1 may be elevated or lowered in subjects with a variety of pathological conditions.
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