Name: Human KL Recombinant Protein (His tag)

Synonyms: Kl; EC;KL;Klotho;KLOT

Expression host: E.coli

Sequence: Phe 765-Ser 981

Accesstion: Q9UEF7

Species: Human

Mol_Mass: 23.8 kDa

AP_Mol_Mass: 31 kDa

Tag: N-His

Purity: > 95 % as determined by reducing SDS-PAGE.

Endotoxin: Please contact us for more information.

Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at

Shipping: This product is provided as lyophilized powder which is shipped with ice packs.

Formulation: Lyophilized from sterile PBS, pH 7.4.Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.Please refer to the specific buffer information in the printed manual.

Reconstitution: Please refer to the printed manual for detailed information.

Background: Klotho, also called Klotho-alpha, is the founding member of the Klotho family within the glycosidase-1 superfamily . Klotho is expressed in areas concerned with calcium regulation, predominantly in the kidney distal convoluted tubules, but also in the brain choroid plexus (which produces cerebrospinal fluid) and the parathyroid. A 130 kDa form found in plasma and cerebrospinal fluid is produced by proteolytic cleavage of the glycosylated 135 kDa full-length Klotho . A truncated 549 aa isoform predicted by alternative mRNA splicing has been detected in human and mice. A prominent intracellular 120 kDa form of Klotho is localized to endoplasmic reticulum and Golgi membranes. The phenotype of Klotho-deficient mice resembles premature aging, including arteriosclerosis, osteoporosis, skin atrophy, infertility, emphysema and premature death. Conversely, excess Klotho extends lifespan. Klotho acts as a cofactor for interaction of FGF-23 with FGF R1. This interaction negatively regulates 1 alpha -hydroxylase, the rate-limiting enzyme in the synthesis of 1,25(OH)2D3 (vitamin D). Klotho deficient mice show severe hyperphosphatemia and ectopic calcification of soft tissues due to excess vitamin D. Both Klotho and Klotho beta are cofactors for FGF19 binding. Klotho also shows glucuronidase activity which activates the renal ion channel TRPV5 to reabsorb urinary calcium. Klotho has been reported to downregulate insulin or IGF-1 signaling in adipocytes, to bind and antagonize Wnt molecules, and to facilitate release of parathyroid hormone.

MedChemExpress (MCE) recombinant proteins include: cytokines, enzymes, growth factors, hormones, receptors, transcription factors, antibody fragments, etc. They are often essential for supporting cell growth, stimulating cell signaling pathways, triggering or inhibiting cell differentiation; and are useful tools for elucidating protein structure and function, understanding disease onset and progression, and validating pharmaceutical targets. At MedChemExpress (MCE), we strive to provide products with only the highest quality. Protein identity, purity and biological activity are assured by our robust quality control and assurance procedures.
Related category websites:
Popular product recommendations:
ZP3 Protein
KGF/FGF-7 Protein
Popular categories:
CD252/OX40 Ligand