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IL-1 RI Antibody [Unconjugated]


IL‑1 RI was detected in perfusion fixed frozen sections of mouse skin (tail) using Goat Anti-Mouse IL‑1 RI Antigen Affinity-purified Polyclonal Antibody (Catalog # AF771) at 1 µg/mL for 1 hour at more
Recombinant Mouse IL‑1 alpha /IL‑1F1 (Catalog # 400-ML) stimulates proliferation in the the D10.G4.1 mouse helper T cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Mouse more

Product Details

Reactivity MuSpecies Glossary
Applications WB, IHC, B/N

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IL-1 RI Antibody [Unconjugated] Summary

Mouse myeloma cell line NS0-derived recombinant mouse IL-1 RI
Accession # P13504
Detects mouse IL-1 RI in direct ELISAs and Western blots. In direct ELISAs, less than 15% cross-reactivity with recombinant mouse IL-18 R and recombinant human IL-1 RI is observed.
Purity Statement
Antigen Affinity-purified
Endotoxin Note
<0.10 EU per 1 μg of the antibody by the LAL method.
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Immunohistochemistry 1-15 ug/mL
  • Neutralization 0.2-1.0 ug/mL
  • Western Blot 0.1 ug/mL
Read Publications using
AF771 in the following applications:

Packaging, Storage & Formulations

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.
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.
No Preservative
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.


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

Alternate Names for IL-1 RI Antibody [Unconjugated]

  • CD121 antigen-like family member A
  • CD121a antigen
  • CD121a
  • IL-1 RI
  • IL1R
  • IL1R1
  • IL1RI
  • IL-1RI
  • IL1RT1
  • IL-1RT1
  • IL-1RT-1
  • Interleukin 1 Receptor 1
  • interleukin 1 receptor, type I
  • interleukin receptor 1
  • interleukin-1 receptor type 1
  • p80


Two distinct types of receptors that bind the pleiotropic cytokines IL-1 alpha and IL-1 beta have been described. The IL-1 receptor Type I is an 80 kDa transmembrane protein that is expressed predominantly by T cells, fibroblasts, and endothelial cells. IL-1 receptor Type II is a 68 kDa transmembrane protein found on B lymphocytes, neutrophils, monocytes, large granular leukocytes and endothelial cells. Both receptors are members of the immunoglobulin superfamily and show approximately 28% sequence identity in their extracellular domains. The two receptor types do not heterodimerize into a receptor complex. Mouse IL-1 RI shares 63% amino acid sequence homology with human IL-1 RI in their extracellular domains.

An IL-1 receptor accessory protein (1) that can heterodimerize with the Type I receptor in the presence of IL-1 alpha or IL-1 beta  but not IL-1ra, was identified. This Type I receptor complex appears to mediate all the known IL-1 biological responses. The receptor Type II has a short cytoplasmic domain and does not transduce IL-1 signals. In addition to the membrane-bound form of IL-1 RII, a naturally-occurring soluble form of IL-1 RII has been described. It has been suggested that the Type II receptor, either as the membrane-bound or as the soluble form, serves as a decoy for IL-1 and inhibits IL-1 action by blocking the binding of IL-1 to the signaling Type I receptor complex. Recombinant IL-1 soluble receptor Type I is a potent antagonist of IL-1 action.

  1. Greenfeder, S. et al. (1995) J. Biol. Chem. 270:13757.


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.

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Publications for IL-1 RI Antibody (AF771)(12)

We have publications tested in 3 confirmed species: Mouse, Rat, Primate - Macaca fuscata (Japanese Macaque).

We have publications tested in 7 applications: ELISA Development, ICC, IHC, IHC-Fr, Immunoprecipitation, Neutralization, Western Blot.

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ELISA Development
Western Blot
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Primate - Macaca fuscata (Japanese Macaque)
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Showing Publications 1 - 10 of 12. Show All 12 Publications.
Publications using AF771 Applications Species
R Furrer, AJ Jauch, T Nageswara, S Dilbaz, P Rhein, SA Steurer, M Recher, RC Skoda, C Handschin Remodeling of metabolism and inflammation by exercise ameliorates tumor-associated anemia Science Advances, 2021;7(37):eabi4852. 2021 [PMID: 34516881] (Immunoprecipitation, Mouse) Immunoprecipitation Mouse
A Shimada, S Hasegawa-I Increased cytokine expression in the choroid plexus stroma and epithelium in response to endotoxin-induced systemic inflammation in mice Toxicology reports, 2021;8(0):520-528. 2021 [PMID: 33747797] (IHC, Mouse) IHC Mouse
HM Hsiao, R Fernandez, S Tanaka, W Li, JH Spahn, S Chiu, M Akbarpour, D Ruiz-Perez, Q Wu, C Turam, D Scozzi, T Takahashi, HP Luehmann, V Puri, GRS Budinger, AS Krupnick, AV Misharin, KJ Lavine, Y Liu, AE Gelman, A Bharat, D Kreisel Spleen-derived classical monocytes mediate lung ischemia-reperfusion injury through IL-1? J. Clin. Invest., 2018;128(7):2833-2847. 2018 [PMID: 29781811] (Neutralization, Mouse) Neutralization Mouse
DL Coutu, KD Kokkaliari, L Kunz, T Schroeder Multicolor quantitative confocal imaging cytometry Nat. Methods, 2018;15(1):39-46. 2018 [PMID: 29320487] (IHC, Mouse) IHC Mouse
Spinal astrocytic activation contributes to mechanical allodynia in a rat model of cyclophosphamide-induced cystitis Mol Pain, 2016;12(0):. 2016 [PMID: 27852964] (IHC-Fr, Rat) IHC-Fr Rat
Aube B, Levesque S, Pare A, Chamma E, Kebir H, Gorina R, Lecuyer M, Alvarez J, De Koninck Y, Engelhardt B, Prat A, Cote D, Lacroix S Neutrophils mediate blood-spinal cord barrier disruption in demyelinating neuroinflammatory diseases. J Immunol, 2014;193(5):2438-54. 2014 [PMID: 25049355] (IHC, Mouse) IHC Mouse
Ataka K, Asakawa A, Nagaishi K, Kaimoto K, Sawada A, Hayakawa Y, Tatezawa R, Inui A, Fujimiya M Bone marrow-derived microglia infiltrate into the paraventricular nucleus of chronic psychological stress-loaded mice. PLoS ONE, 2013;8(11):e81744. 2013 [PMID: 24303068] (IHC, Mouse) IHC Mouse
Proebstl D, Voisin MB, Woodfin A, Whiteford J, D'Acquisto F, Jones GE, Rowe D, Nourshargh S Pericytes support neutrophil subendothelial cell crawling and breaching of venular walls in vivo. J. Exp. Med., 2012;209(6):1219-34. 2012 [PMID: 22615129] (IHC, Mouse) IHC Mouse
Imamura Y, Wang H, Matsumoto N, Muroya T, Shimazaki J, Ogura H, Shimazu T Interleukin-1beta causes long-term potentiation deficiency in a mouse model of septic encephalopathy. Neuroscience, 2011;187(0):63. 2011 [PMID: 21571042] (Western Blot, Mouse) Western Blot Mouse
Grayson BE, Levasseur PR, Williams SM, Smith MS, Marks DL, Grove KL Changes in melanocortin expression and inflammatory pathways in fetal offspring of nonhuman primates fed a high-fat diet. Endocrinology, 2010;151(4):1622-32. 2010 [PMID: 20176722] (IHC-Fr, Primate - Macaca fuscata (Japanese Macaque)) IHC-Fr Primate - Macaca fuscata (Japanese Macaque)
Show All 12 Publications.

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Gene Symbol IL1R1