Recombinant Human Fibroblast growth factor 23 protein (FGF23) (Active)

Regulator of phosphate homeostasis. Inhibits renal tubular phosphate transport by reducing SLC34A1 levels. Upregulates EGR1 expression in the presence of KL (By similarity) . Acts directly on the parathyroid to decrease PTH secretion (By similarity) . Regulator of vitamin-D metabolism. Negatively regulates osteoblast differentiation and matrix mineralization. {ECO:0000250, ECO:0000269|PubMed:11062477, ECO:0000269|PubMed:11409890, ECO:0000269|PubMed:15040831, ECO:0000269|PubMed:16597617, ECO:0000269|PubMed:18282132}.

YPNASPLLGS SWGGLIHLYT ATARNSYHLQ IHKNGHVDGA PHQTIYSALM IRSEDAGFVV ITGVMSRRYL CMDFRGNIFG SHYFDPENCR FQHQTLENGY DVYHSPQYHF LVSLGRAKRA FLPGMNPPPY SQFLSRRNEI PLIHFNTPIP RRHTRSAEDD SERDPLNVLK PRARMTPAPA SCSQELPSAE DNSPMASDPL GVVRGGRVNT HAGGTGPEGC RPFAKFI

Fully biologically active when compared to standard. The ED50 as determined by thymidine uptake assay using FGF-receptors transfected BaF3 cells is less than 0.5 g, ml, corresponding to a specific activity of 2.0 103 IU, mg in the presence of 0.3 ?g, ml of rMuKlotho and 10 g, ml of heparin.

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.