Recombinant Human Leptin R Fc Chimera Protein, CF

Images

 
There are currently no images for Leptin R (389-LR/CF).

Every product we sell is backed by Novus' 100% Guarantee. If you have used this product, please submit your images and reviews to earn reward points.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

View Available Formulations
Catalog# & Formulation Size Price

Recombinant Human Leptin R Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its ability to inhibit Leptin-dependent proliferation of BaF3 mouse pro‑B cells transfected with human Leptin R. The ED50 for this effect is 0.02-0.12 µg/mL in the presence of 3 ng/mL Recombinant Human Leptin/OB (Catalog # 398-LP).
Source
Mouse myeloma cell line, NS0-derived human Leptin R protein
Human Leptin R
(Thr20-Asp839)
Accession # P48357
IIEGR Human IgG1
(Pro100-Lys330)
6-His tag
N-terminus C-terminus
Accession #
N-terminal Sequence
Thr20
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
LEPR
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.1 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
121 kDa (monomer).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
155-175 kDa, reducing conditions
Publications
Read Publications using
389-LR/CF in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in MES, NaCl and CHAPS.
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 200 μg/mL in sterile PBS.

Notes

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

Alternate Names for Recombinant Human Leptin R Fc Chimera Protein, CF

  • B219
  • CD295 antigen
  • CD295
  • DB
  • DKFZp686B1731
  • huB219
  • LEPR
  • LEP-R
  • Leptin R
  • leptin receptor
  • LeptinR
  • OB R
  • OB receptor
  • OB-R
  • OBRCD295

Background

The Leptin receptor (Leptin R, gene name LEPR), also called OB R (obesity receptor), is a 150 kDa protein that is a member of the Class I cytokine receptor family. It mediates the activities of Leptin, a multi-functional hormone produced primarily by adipose tissues that plays roles in food intake, energy metabolism, angiogenesis, reproduction, hematopoiesis, bone metabolism, and immune function (1-3). The human Leptin R gene encodes 1165 amino acids (aa) including a signal peptide, an extracellular region with cytokine receptor homology (CRH), multiple fibronectin type III domains and a WSXWS motif, a transmembrane domain, and a cytoplasmic domain that supports JAK/STAT signaling (2, 3). Human Leptin R shares 76% aa sequence identity with mouse and rat Leptin R, and 83-86% with bovine, canine, equine and porcine Leptin R. Leptin R isoforms include a long form, OB RL or OB Rb (primary signaling form), and at least four shorter isoforms with truncated cytoplasmic domains, named OB Ra (ubiquitous), Rc, Rd, and Rf (2, 4). A soluble isoform, OB Re, is found in rodents but not humans (5). However, both humans and rodents produce soluble Leptin R due to release of soluble ectodomains by metalloproteinases such as ADAM10 (5, 6). OB Rb is highly expressed in the hypothalamus and mediates the anti-orexigenic effects of Leptin (1, 2). Mutations of ObRb have caused extreme obesity in humans, mice (db/db “diabetes”), and rats (Zucker fa/fa “fatty”) (1, 7-9). Shorter isoforms of Leptin R exhibit limited signaling capability, but mediate endocytosis and degradation of Leptin and passage through the blood-brain barrier (4, 5, 10, 11). Soluble Leptin R is the primary Leptin-binding protein in blood, where it maintains a pool of available bioactive Leptin, delays Leptin clearance from circulation, and down-regulates blood-brain transmission of Leptin (5-7, 10). In humans, soluble Leptin R levels are inversely proportional to adiposity and are elevated in females versus males (12). Soluble Leptin R is also found up-regulated in patients with chronic heart failure, end-stage renal disease, and anorexia (13-15). It is expressed by tumor-initiating stem cells, and is proposed as a link between between cancer and obesity (16).

  1. Israel, D. and S. Chua, Jr. (2010) Trends Endocrinol. Metab. 21:10.
  2. Oswal, A. and G. Yeo (2010) Obesity 18:221.
  3. Tartaglia, L.A. et al. (1995) Cell 83:1263.
  4. Murakami, T. et al. (1997) Biochem. Biophys. Res. Commun. 231:26.
  5. Lou, P.H. et al. (2010) PLoS ONE 5:e11669.
  6. Schaab, M. et al. (2012) PLoS ONE 7:e34787.
  7. Huang, L. et al. (2001) J. Biol. Chem. 276:6343.
  8. Chen, H. et al. (1996) Cell 84:491.
  9. Phillips, M.S. et al. (1996) Nature Genet. 13:18.
  10. Tu, H. et al. (2008) J. Cell Physiol. 214:301.
  11. Tu, H. et al. (2007) J. Cell. Physiol. 212:215.
  12. Mann, D.R. et al. (2003) J. Clin. Endocrinol. Metab. 88:3339.
  13. Schulze, P.C. et al. (2003) Eur. J. Heart Fail. 5:33.
  14. Pecoits-Filho, R. et al. (2002) Eur. J. Clin. Invest. 32:811.
  15. Krizova, J. et al. (2002) Endocr. Res. 28:199.
  16. Feldman, D.E. et al. (2012) Proc. Natl. Acad. Sci. USA 109:829.

Customers Who Viewed This Item Also Viewed...

NBP2-34260
Species: Hu, Mu, Po, Bv, Rb
Applications: WB, Flow, ICC/IF, IHC-Fr, IHC-P, IP, PAGE
NB100-1533
Species: Hu, Mu, Po, Sh
Applications: WB, ICC/IF, IHC, IHC-P, PEP-ELISA
NBP2-22471
Species: Hu, Mu, Rt, Mk, Pm
Applications: WB, ChIP, ICC/IF, IHC, IHC-P, IP, KD
NBP1-46535
Species: Hu, Mu, Rt, Rb, Xp, Ze
Applications: WB, IHC, IHC-Fr, IHC-P
NBP2-67429
Species: Hu, Mu, Rt
Applications: WB, ICC/IF, IHC, IHC-P, IP
7270-IL/CF
Species: Hu
NBP2-27210
Species: Hu, Fe, Pm
Applications: WB, IHC-P
NBP2-22203
Species: Hu, Mu, Rt, Mk
Applications: WB, ELISA, Flow, ICC/IF, IHC, IHC-P
MAB1790
Species: Hu
Applications: WB, Simple Western, IHC
AF636
Species: Hu, Mu, Rt
Applications: WB, IHC
NB120-6405
Species: Rt
Applications: ELISA, Flow, ICC/IF, IHC, IHC-Fr, IHC-P, IP, B/N, CyTOF-ready, Flow-IC
NBP1-56929
Species: Hu
Applications: WB, IHC, IHC-P
NBP1-91749
Species: Hu
Applications: WB, ICC/IF, IHC, IHC-P
NB400-141
Species: Hu, Mu, Ha
Applications: WB, ICC/IF, IP

Publications for Leptin R (389-LR/CF)(3)

Reviews for Leptin R (389-LR/CF) (0)

There are no reviews for Leptin R (389-LR/CF). By submitting a review you will receive an Amazon e-Gift Card or Novus Product Discount.
  • Review with no image -- $10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen
  • Review with an image -- $25/€18/£15/$25 CAD/¥150 Yuan/¥2500 Yen
  • 1st to review with an image -- $50/€35/£30/$50 CAD/¥300 Yuan/¥5000 Yen

FAQs for Leptin R (389-LR/CF) (0)

There are no specific FAQs related to this product. Read our general customer & technical service FAQs.

Customers Who Bought This Also Bought

Contact Information

Product PDFs

Calculators

Concentration Calculator

The concentration calculator allows you to quickly calculate the volume, mass or concentration of your vial. Simply enter your mass, volume, or concentration values for your reagent and the calculator will determine the rest.

=
÷

Review this Product

Be the first to review our Recombinant Human Leptin R Fc Chimera Protein, CF and receive a gift card or discount.

Bioinformatics

Gene Symbol LEPR
Uniprot