Klotho, Recombinant, Human (KL)
395.74 $
For reserch purpose only
Shipping cost plus VAT not included , delivery in 7-14 business days
Catalog No
USB-143422
Supplier
US Biologicals
Size
5 µg
Product Overview
Product Properties
Target Gene
Product Overview
| Description | Klotho is a glycosylated protein that plays an important role in the regulation of phosphate and calcium homeostasis. Human Klotho exists in both membrane bound and secreted forms, and is predominantly expressed in the kidney convoluted tubules, and to a lesser extent, in the brain, reproductive organs, endocrine glands, urinary bladder, skeletal muscle, placenta, and colon. The full length transmembrane form has a large extracellular domain composed of two homologous subunits termed KL1 and KL2, which contain 516 and 439aa residues, respectively. The predominant circulating form, which is derived from alternative RNA splicing, contains the KL1 subunit and constitutes the N-terminal sequence of transmembrane Klotho. A third Klotho protein of about 128kD has been identified in the blood and cerebrospinal fluid. This circulating protein arises from the action of an as yet unidentified protease which cleaves transmembrane Klotho just above and/or within the plasma membrane. Klotho has been shown to play a key role in the signaling cascade of fibroblast growth factor-23 (FGF-23), a bone derived hormone that acts in the kidney to inhibit phosphate reabsorption and vitamin D biosynthesis. Klotho promotes FGF-23 signaling through binding to FGFRI (IIIc) which converts this canonical FGF receptor into a specific receptor for FGF-23.In the absence of Klotho the function of FGF-23 is literally abolished. Recombinant human Klotho is a 65-70kD glycoprotein containing 516aa residues. Biological Activity: Determined by the dose-dependent stimulation of the proliferation of murine NIH-3T3 cells. Recombinant human Klotho is effective in a concentration range of 0.5-2ug/ml. AA Sequence: EPGDGAQTWARFSRPPAPEAAGLFQGTFPDGFLWAVGSAAYQTEGGWQQHGKGASIWDTFTHHPLAPPGDSRNASLPLGAPSPLQPATGDVASDSYNNVFRDTEALRELGVTHYRFSISWARVLPNGSAGVPNREGLRYYRRLLERLRELGVQPVVTLYHWDLPQRLQDAYGGWANRALADHFRDYAELCFRHFGGQVKYWITIDNPYVVAWHGYATGRLAPGIRGSPRLGYLVAHNLLLAHAKVWHLYNTSFRPTQGGQVSIALSSHWINPRRMTDHSIKECQKSLDFVLGWFAKPVFIDGDYPESMKNNLSSILPDFTESEKKFIKGTADFFALCFGPTLSFQLLDPHMKFRQLESPNLRQLLSWIDLEFNHPQIFIVENGWFVSGTTKRDDAKYMYYLKKFIMETLKAIKLDGVDVIGYTAWSLMDGFEWHRGYSIRRGLFYVDFLSQDKMLLPKSSALFYQKLIEKNGFPPLPENQPLEGTFPCDFAWGVVDNYIQVSQLTKPISSLTKPYH Crossreactivity: Mouse Quality Control: Verified by N-terminal and Mass Spectrometry analyses (when applicable). Endotoxin: <0.1ng/ug of protein (<1EU/ug). Protein Content: Verified by UV Spectroscopy and/or SDS-PAGE gel. Storage and Stability: Store lyophilized products at -20°C. For reconstituted solutions of most products, we recommend short-term storage at 4°C. For longer term storage the protein solution should be stored with a carrier protein (eg. 0.1% BSA) in working aliquots and stored frozen at -20°C. Additional freeze/thaw cycles may cause some denaturation of the protein. |
| Source Antigen | Recombinant, CHO cells |
| Reactivity | |
| Cross Reactivity | |
| Applications | |
| Molecular Weight |
Product Properties
| Storage | -20°C |
| Grade | Highly Purified |
| Purity | ≥98% by SDS-PAGE gel and HPLC analyses. |
| Form | Supplied as a lyophilized powder. |
| Reactivity Life | 12 months |
| Note | For reserch purpose only |
Target Gene
NA
