Recombinant Human Klotho (KL), Truncated

Uniprot Id

Q9UEF7

Target Species

Human

Target Name

KL

Target Full Name

Klotho

Target Function

May have weak glycosidase activity towards glucuronylated steroids. However, it lacks essential active site Glu residues at positions 239 and 872, suggesting it may be inactive as a glycosidase in vivo. May be involved in the regulation of calcium and phosphorus homeostasis by inhibiting the synthesis of active vitamin D. Essential factor for the specific interaction between FGF23 and FGFR1.; The Klotho peptide generated by cleavage of the membrane-bound isoform may be an anti-aging circulating hormone which would extend life span by inhibiting insulin/IGF1 signaling.

Target Involvement

Tumoral calcinosis, hyperphosphatemic, familial (HFTC)

Target Subcellular Location

[Isoform 1]: Cell membrane; Single-pass type I membrane protein. Apical cell membrane; Single-pass type I membrane protein.; [Isoform 2]: Secreted.; [Klotho peptide]: Secreted.

Target Protein Families

Glycosyl hydrolase 1 family, Klotho subfamily

Target Tissue Specificity

Present in cortical renal tubules (at protein level). Soluble peptide is present in serum and cerebrospinal fluid. Expressed in kidney, placenta, small intestine and prostate. Down-regulated in renal cell carcinomas, hepatocellular carcinomas, and in chro

Target Synonyms

Kl; KLOT_HUMAN; Klotho peptide

Target Background

This gene encodes a type-I membrane protein that is related to beta-glucosidases. Reduced production of this protein has been observed in patients with chronic renal failure (CRF), and this may be one of the factors underlying the degenerative processes (e.g., arteriosclerosis, osteoporosis, and skin atrophy) seen in CRF. Also, mutations within this protein have been associated with ageing and bone loss.