Phe53-Leu997, with C-terminal 10* His Tag
FSGDGRAIWSKNPNFTPVNESQLFLYDTFPKNFFWGIGTGALQVEGSWKKDGKGPSIWDHFIHTHLKNVSSTNGSSDSYIFLEKDLSALDFIGVSFYQFSISWPRLFPDGIVTVANAKGLQYYSTLLDALVLRNIEPIVTLYHWDLPLALQEKYGGWKNDTIIDIFNDYATYCFQMFGDRVKYWITIHNPYLVAWHGYGTGMHAPGEKGNLAAVYTVGHNLIKAHSKVWHNYNTHFRPHQKGWLSITLGSHWIEPNRSENTMDIFKCQQSMVSVLGWFANPIHGDGDYPEGMRKKLFSVLPIFSEAEKHEMRGTADFFAFSFGPNNFKPLNTMAKMGQNVSLNLREALNWIKLEYNNPRILIAENGWFTDSRVKTEDTTAIYMMKNFLSQVLQAIRLDEIRVFGYTAWSLLDGFEWQDAYTIRRGLFYVDFNSKQKERKPKSSAHYYKQIIRENGFSLKESTPDVQGQFPCDFSWGVTESVLKPESVASSPQFSDPHLYVWNATGNRLLHRVEGVRLKTRPAQCTDFVNIKKQLEMLARMKVTHYRFALDWASVLPTGNLSAVNRQALRYYRCVVSEGLKLGISAMVTLYYPTHAHLGLPEPLLHADGWLNPSTAEAFQAYAGLCFQELGDLVKLWITINEPNRLSDIYNRSGNDTYGAAHNLLVAHALAWRLYDRQFRPSQRGAVSLSLHADWAEPANPYADSHWRAAERFLQFEIAWFAEPLFKTGDYPAAMREYIASKHRRGLSSSALPRLTEAERRLLKGTVDFCALNHFTTRFVMHEQLAGSRYDSDRDIQFLQDITRLSSPTRLAVIPWGVRKLLRWVRRNYGDMDIYITASGIDDQALEDDRLRKYYLGKYLQEVLKAYLIDKVRIKGYYAFKLAEEKSKPRFGFFTSDFKAKSSIQFYNKVISSRGFPFENSSSRCSQTQENTECTVCLFLVQKKPLHHHHHHHHHH
118-140kDa
5% (W/V) Trehalose, PBS, pH7.4
Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.
· 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.
· 3 months, -20 to -80℃ under sterile conditions after reconstitution.
· 1 week, 2 to 8℃ under sterile conditions after reconstitution.
· Please avoid repeated freeze-thaw cycles.
1、Chang Q. et al. (2005) The β-Glucuronidase Klotho Hydrolyzes and Activates the TRPV5 Channel. Science. 310: 490-493.
2、Kurosu H. et al. (2007) Tissue-specific Expression of βKlotho and Fibroblast Growth Factor (FGF) Receptor Isoforms Determines Metabolic Activity of FGF19 and FGF21. J. Biol. Chem. 282(37): 26687-26695.
The klotho family protein klotho beta (KLB) is a single transmembrane protein that serves as a co-receptor with fibroblast growth factor receptor (FGFR). By mediating FGF21 binding to FGFR, klotho beta plays key roles in the regulation of metabolism. In mice, moreover, decreased klotho beta expression appears to result in FGF21 resistance. This suggests FGF21-KLB-FGFR signaling may be involved in the pathogenesis of NAFLD. An association between klotho beta reduction and fibrosis has been recently reported by Somm et al. who demonstrated that KLB deficient mice exhibited a pro-inflammatory status and onset of fibrosis. Klotho beta functions as a key cell-surface regulator of GSIS by coupling the GP130 receptor signaling to glucose catabolism in β-cells and represents a promising therapeutic target for diabetes.
Measured by its binding ability in a functional ELISA. When Recombinant Human FGF21 is immobilized 2.5µg/mL (100 µl/well),
Recombinant Human Klotho beta His-Tag binds with an EC50 of 0.2-0.8 μg/ml.
Immobilized FGF-19 Protein, Human (Cat. No. UA040086) at 10.0μg/mL (100μL/well) can bind Klotho β Protein, Human (Cat. No. UA040050) with EC50 of 0.35-0.57 μg/mL.
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