CNTFR alpha Antibody [Unconjugated]

Recombinant Rat CNTF R alpha (Catalog # 558-CR) enhances Recombinant Rat CNTF (Catalog # 557-NT) induced proliferation in the TF‑1 human erythroleukemic cell line in a dose-dependent manner (orange line). Enhancement of Recombinant Rat CNTF (10 ng/mL) activity elicited by Recombinant Rat CNTF R alpha (0.25 µg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Rat CNTF R alpha Antigen Affinity-purified Polyclonal Antibody (Catalog # AF‑559‑NA). The ND50 is typically 2‑6 µg/mL.

• Reactivity: Rt
• Applications: WB, IHC, B/N
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Unconjugated
• Concentration: LYOPH

CNTFR alpha Antibody [Unconjugated] Summary

• Immunogen: S. frugiperda insect ovarian cell line Sf 21-derived recombinant rat CNTF R alpha
  Ala19-Pro346
  Accession # Q08406
• Specificity: Detects human CNTF R alpha in direct ELISAs and Western blots. In direct ELISAs, greater than 50% cross-reactivity with recombinant human CNTF sR alpha is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: Cntfr
• Purity Statement: Antigen Affinity-purified
• Endotoxin Note: <0.10 EU per 1 μg of the antibody by the LAL method.

Applications/Dilutions

• Dilutions:
  • Immunohistochemistry 5-15 ug/mL
  • Neutralization 2-6 ug/mL
  • Western Blot 0.1 ug/mL

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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

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

Alternate Names for CNTFR alpha Antibody [Unconjugated]

• Ciliary neurotrophic factor receptor subunit alpha;Cntfr
• CNTF R alpha
• CNTFR alpha
• CNTFR
• CNTFRa

Background

The high-affinity CNTF receptor complex, which mediates the biological action of CNTF, contains three proteins: the ligand-binding a subunit (CNTF R alpha ) and the two signal-transducing proteins LIF R beta and gp130. Whereas LIF R beta and gp130 are widely expressed in many cell types, the expression of CNTF R alpha is restricted to the central and peripheral nervous systems. cDNAs encoding CNTF R alpha have been isolated from both human and rat and were shown to share 94% amino acid (aa) sequence identity. Rat CNTF R alpha cDNA encodes a 372 amino acid residue precursor protein that apparently has a 22 aa residue signal peptide and five potential glycoslyation sites. CNTF R alpha differs from other cytokine receptors in that it lacks transmembrane and cytoplasmic domains and is anchored to cell membranes by a glycosylphosphatidylinositol (GPI) linkage. Similar to other GPI-linked proteins, soluble CNTF receptor alpha (CNTF sR alpha ) can be released from the cell surface by phosphatidylinositol-specific phospholipase C. CNTF sR alpha can be released from skeletal muscle in response to peripheral nerve injury and high concentrations of CNTF sR alpha have also been detected in human cerebrospinal fluid. CNTF sR alpha binds CNTF in solution and the complex can act on cells that express only LIF R beta and gp130 but not CNTF R alpha .

1. Yancopoulos, G.D. in Guidebook to Cytokines and Their Receptors,
Nicola, N.A. editor, Oxford University Press, New York, pp137.

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.

Publications for CNTFR alpha Antibody (AF-559-NA)(1)

Publication using AF-559-NA

• P Gómez-Fern, A Lopez de L, I Astobiza, J Mena, A Urtasun, V Altmann, F Matesanz, D Otaegui, E Urcelay, A Antigüedad, S Malhotra, X Montalban, T Castillo-T, L Espino-Pai, O Aktas, M Buttmann, A Chan, B Fontaine, PA Gourraud, M Hecker, S Hoffjan, C Kubisch, T Kümpfel, F Luessi, UK Zettl, F Zipp, I Alloza, M Comabella, CM Lill, K Vandenbroe The Rare IL22RA2 Signal Peptide Coding Variant rs28385692 Decreases Secretion of IL-22BP Isoform-1, -2 and -3 and Is Associated with Risk for Multiple Sclerosis Cells, 2020-01-10;9(1):. 2020-01-10 [PMID: 31936765] (Western Blot, Mouse)

Bioinformatics

• Gene Symbol: Cntfr
• Uniprot:
  • Q08406()