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  • 06-1085-I - Anti-IL-7Ra (CD127), extracellular Antibody

06-1085-I Sigma-Aldrich

Anti-IL-7Ra (CD127), extracellular Antibody

clone, from rabbit, purified by affinity chromatography

Synonym: Interleukin-7 receptor subunit alpha, IL-7 receptor subunit alpha, IL-7R subunit alpha, IL-7R-alpha, IL-7RA, CDw127, CD127

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, IH-IM, Primary Antibodies
clone   polyclonal
biological source   rabbit
application(s)   flow cytometry: suitable
  western blot: suitable
species reactivity   human
shipped in   wet ice
Quality Level   100
antibody product type   primary antibodies
purified by   affinity chromatography
NCBI accession no.   NP_002176
UniProt accession no.   P16871
Gene Information   human ... IL7R(3575)


General description

The R34-34 antibody is specific for human CD127, a cell surface protein also known as the Interleukin-7 Receptor alpha chain, or IL-7R alpha. CD127 is typically expressed at the cell surface as a heterodimer with the common gamma chain (CD132). This complex acts as the functional receptor for IL-7, a cytokine important in T and B cell development, and in mature T cell homeostasis. A second cytokine known as Thymic Stromal Lymphopoietin (TSLP) also binds to a receptor complex of CD127 and the TSLPR chain to trigger activation of dendritic cells, and is involved in B cell development, allergy and autoimmunity. The R34-34 antibody may be used as a phenotypic marker for CD127 on immature B cells, on subsets of thymocytes which are double negative (CD4-CD8- ) or single positive (CD4+ or CD8+), and at low levels on mature, peripheral T cells. CD127 is a key marker, when used in combination with CD4 and CD25, to distinguish Treg and effector/memory Treg populations known as T(REM), whereas certain populations of Foxp3+ /CD25+ T cells lacking CD127 have been associated with impaired suppressive function (Bikker et al. 2012. Rheumatology, 51: 996-1005)


Epitope: Extracellular domain

KLH-conjugated linear peptide corresponding to the extracellular domain of human IL-7Ra (CD127).


Research Category
Apoptosis & Cancer

Research Sub Category
Apoptosis - Additional

This Anti-IL-7Ra (CD127), extracellular Antibody is validated for use in Western Blotting and Flow Cytometry for the detection of IL-7Ra (CD127), extracellular.

Western Blotting Analysis: 2.0 µg/mL from a representative lot detected IL-7Ra (CD127) in 10 µg of human spleen tissue lysate.
Flow Cytometry Analysis: 0.25 µg of this antibody from a representative lot detected IL-7Ra (CD127) in 1X10E6 human peripheral blood mononuclear cells (PBMCs).

Target description

~70 kDa observed. This protien is highly and variably glycosylated, and may vary from the calculated molecular weight of ~52kDa (Vranjkovi, A., et al., International Immunology, Vol. 19, No. 12, pp. 1329–1339). Uncharacterized band(s) may appear in some lysates.

Physical form

Affinity Purfied

Purified rabbit polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


Evaluated by Western Blotting in K562 cell lysate.

Western Blotting Analysis: 2.0 µg/mL of this antibody detected IL-7Ra (CD127) in 10 µg of K562 cell lysate.

Other Notes

Concentration: Please refer to lot specific datasheet.

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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