Recombinant Mouse FGF-9

Fibroblast growth factor 9 (glia-activating factor), also known as FGF9 is a glycosylated neurotrophic polypeptide highly expressed in brain.¹ It is a member of the fibroblast growth factor (FGF) family that possess broad mitogenic and cell survival activities, and are involved in a variety of biological processes, including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. This protein was isolated as a secreted factor that exhibits a growth-stimulating effect on cultured glial cells. In nervous system, this protein is produced mainly by neurons and may be important for glial cell development. FGF-9 has sequence similarity of approximately 30% to other members of the family of fibroblast growth factors.² It is highly related to FGF-16.
FGF-9 has been shown to mediate its effects by binding to FGF receptors. It efficiently activates the FGFR2c splice form of FGFR2 and the FGFR3b and FGFR3c splice isoforms of FGFR3.³ FGF-9 is a high affinity, heparin dependent ligand for FGFR3 and FGFR2 but not for FGFR1 and FGFR4.⁴

The biological activity of Mouse Fibroblast Growth Factor-9 is determined by the dose-dependent stimulation of thymidine uptake by BaF3 cells expressing FGF receptors. The expected ED₅₀ for this effect is 2 x 10⁶ units/mg.

PLGEVGSYFG VQDAVPFGNV PVLPVDSPVL LNDHLGQSEA GGLPRGPAVT DLDHLKGILR RRQLYCRTGF HLEIFPNGTI QGTRKDHSRF GILEFISIAV GLVSIRGVDS GLYLGMNEKG ELYGSEKLTQ ECVFREQFEE NWYNTYSSNL YKHVDTGRRY YVALNKDGTP REGTRTKRHQ KFTHFLPRPV DPDKVPELYK DILSQS

Lyophilized

The predicted molecular weight of Recombinant Mouse FGF-9 is Mr 23 kda kDa.

23 kda

The lyophilized protein should be stored desiccated at -20°C. The reconstituted protein can be stored for at least one week at 4°C. For long-term storage of the reconstituted protein, aliquot into working volumes and store at -20°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles.

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1. Imamura T. et al. (1999)J Biol Chem 274: 29352 2. Miyamoto M et al. (1993)Molecular Cellular Biology 13: 4251 3. Santos-Ocampo S et al. (1996)Journal of Biological Chemistry 271: 1726 4. Hecht D et al. (1995)Growth Factors 12: 223