Klotho Protein (KL) (His tag)

Catalog No. ABIN7669192

This Recombinant Klotho protein is produced in Escherichia coli (E. coli).

Quick Overview for Klotho Protein (KL) (His tag) (ABIN7669192)

Target: Klotho (KL)

Protein Type: Recombinant

Biological Activity: Inactive

Origin: Human

Source: Escherichia coli (E. coli)

Purity: > 95 %

Product Details

Purification tag / Conjugate: This Klotho protein is labelled with His tag.

Purpose: Recombinant Human KL protein (His tag)

Sequence: Phe 765-Ser 981

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

Sterility: 0.2 μm filtered

Endotoxin Level: < 10 EU/mg of the protein as determined by the LAL method.

Application Details

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Buffer: Lyophilized from sterile PBS, pH 7.4.
Normally 5 % -8 % trehalose, mannitol and 0.01 % Tween 80 are added as protectants before lyophilization.

Storage: 4 °C,-20 °C,-80 °C

Storage Comment: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Expiry Date: 12 months

Target Details

Target: Klotho (KL)

Alternative Name: KL

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.,EC 3.2.1.31,KL,KLOT,Kl,Klotho

Molecular Weight:

calculated_mw: 23.8 kDa

observed_mw: 31 kDa

UniProt: Q9UEF7

Pathways: Fc-epsilon Receptor Signaling Pathway, EGFR Signaling Pathway, Neurotrophin Signaling Pathway, Hormone Activity, Growth Factor Binding