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Axl, Fc Chimera, Recombinant, Mouse, CF (Tyrosine-protein Kinase Receptor UFO, Adhesion-related Kinase, Ark, Ufo)

Cat no: A4775-11


Supplier: United States Biological
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Axl, also known as Ufo and Ark, is a widely expressed 140kD glycoprotein in the TAM receptor tyrosine kinase family. TAM family receptors (Dtk/Tyro3, Axl, and Mer) are involved in regulation of the inflammatory response, cell survival and migration, and tumorigenesis. Mature mouse Axl consists of a 427aa extracellular domain (ECD) that contains two Ig-like domains and two fibronectin type III domains, a 21aa transmembrane segment, and a 422aa cytoplasmic domain that includes the tyrosine kinase domain. Within the ECD, mouse Axl shares 81% and 95% aa sequence identity with human and rat Axl, respectively. Axl binds the vitamin K dependent protein Gas6 which triggers tyrosine autophosphorylation of the Axl cytoplasmic domain. Activation of Axl induces a broad range of activities including platelet aggregation and thrombus formation, macrophage and dendritic cell phagocytosis of apoptotic cells, NK cell development from hematopoietic progenitor cells, and in vivo angiogenesis. Axl is highly expressed in solid cancers and promotes in vivo tumorigenesis and tumor cell invasiveness. It contributes to vascular remodeling and inflammatory cell infiltration in response to hypertension and restricted blood flow It also functions as a cellular entry receptor for Gas6-opsonized lentiviruses. A 70-80kD soluble portion of the Axl ECD can be shed by proteolytic cleavage, and this fragment retains the ability to bind Gas6. Source: Recombinant corresponding to aa-20-443 from mouse Axl expressed in CHO cell line. Molecular Weight: ~73.6kD Endotoxin: ~1EU/1ug (LAL) Biological Activity: Measured by its binding ability in a functional ELISA. When recombinant mouse Axl Fc Chimera is coated at 2ug/ml (100ul/well), the concentration of recombinant mouse Gas6 that produces 50% optimal binding response is typically 0.4-2ng/ml. Storage and Stability: Lyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 3 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: A4775-11
Reactivities: Mouse
Size: 50ug
Form: Supplied as a lyophilized powder in PBS. Reconstitute with PBS to 100ug/ml.
Purity: ~95% (SDS-PAGE)
References: 1. Linger, R.M.A. et al. (2011) Adv. Cancer Res. 100:35. 2. Faust, M. et al. (1992) Oncogene 7:1287. 3. Rescigno, J. et al. (1991) Oncogene 6:1909. 4. Nagata, K. et al. (1996) J. Biol. Chem. 22:30022. 5. Cosemans, J.M.E.M. et al. (2010) J. Thromb. Haemost. 8:1797. 6. Seitz, H.M. et al. (2007) J. Immunol. 178:5635. 7. Park, I.K.et al. (2009) Blood 113:2470. 8. Holland, S. et al. (2005) Cancer Res. 65:9294. 9. Rankin, E.B. et al. (2010) Cancer Res. 70:7570. 10. Korshunov, V.A. et al. (2006) Circ. Res. 98:1446. 11. Morizono, K. et al. (2011) Cell Host Microbe 9:286. 12. O'Bryan, J.P. et al. (1995) J. Biol. Chem. 270:551. 13. Ekman , C. et al. (2010) J. Thromb. Haemost. 8:838.

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