Klotho beta Antibody (885935) [Alexa Fluor® 532]

• Reactivity: Hu
• Applications: WB
• Clone: 885935
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Alexa Fluor 532

Klotho beta Antibody (885935) [Alexa Fluor® 532] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant human Klotho β
  Phe53-Leu997
  Accession # Q86Z14
• Specificity: Detects human Klotho beta in direct ELISA and Western blots.
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Mouse
• Purity Statement: Protein A or G purified

Applications/Dilutions

• Dilutions:
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Klotho beta Antibody (885935) [Alexa Fluor® 532]

• betaKlotho
• beta-klotho
• BKL
• KLB
• klotho beta like
• Klotho beta
• klotho beta-like protein
• MGC142213

Background

Klotho beta (b-Klotho or KLB) is a 125-135 kDa member of the KL family, Glycosyl Hydrolase 1 superfamily of proteins.  It plays key role in the biology of the endocrine FGFs (FGF-15/19; 21; 23).  KLB appears to serve as a signaling cofactor for select FGFRs, including FGFR-1c, -2c, -3c and FGFR4.  The cofactor is known to constitutively interact with FGFRs, promote FGF binding to their appropriate FGFRs, and to bind directly to FGF-19 and FGF-21.  Notably, FGF-23 appears to utilize a-Klotho/KL for its FGFR signaling cofactor, and FGF-1, while not dependent upon KLB for signaling, can utilize KBL to potentiate certain activities.  KLB is expressed on select cells, including adipocytes and hepatocytes.  Human KLB is a 1044 amino acids (aa) type III transmembrane (TM) protein (i.e.-a type I TM protein lacking a signal sequence).  It contains a 996 aa extracellular region (aa 1-996) and a 27 aa cytoplasmic domain (aa 1018-1044).  The extracellular region contains two glycosyl hydrolase domains (aa 77-508 and 517-967) plus eleven potential N-linked glycosylation sites. Neither hydrolase domain is active as they lack a key Glu residue needed for activity.  Over aa 53-997, human KLB shares 80% aa sequence identity with mouse KLB.  And relative to KL/a-Klotho, human KLB and KL share just 44% aa sequence identity over the entire length of the molecules.     

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.