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  • 03-241 - RIPAb+ PUM2 Antibody

03-241 Sigma-Aldrich

RIPAb+ PUM2 Antibody

from rabbit, purified by affinity chromatography

Synonym: pumilio homolog 2 (Drosophila), pumilio homolog 2, pumilio (Drosphila) homolog 2

  •  eCl@ss 32160702

  •  NACRES NA.32



Related Categories Antibodies, Antibody Kits, Immunoprecipitation Kits More...
clone   polyclonal
biological source   rabbit
application(s)   RIP: suitable
  immunocytochemistry: suitable
  immunohistochemistry: suitable (paraffin)
  western blot: suitable
species reactivity   mouse, chimpanzee, rhesus macaque, canine, mouse, human, mouse, human, human
species reactivity (predicted by homology)   canine (based on 100% sequence homology), canine (based on 100% sequence homology), chimpanzee (based on 100% sequence homology), rhesus monkey (based on 100% sequence homology), rhesus monkey (based on 100% sequence homology), chimpanzee (based on 100% sequence homology)
shipped in   dry ice
isotype   IgG2a
Quality Level   100
purified by   affinity chromatography
mfr. no.   RIPAb+
NCBI accession no.   NP_056132
UniProt accession no.   Q8TB72
Gene Information   human ... PUM2(23369)


General description

PUM2 is a member of the Puf family of RNA-binding proteins, which are believed to play a role in the regulation of posttranscriptional gene expression. Members of the Puf family of RNA binding proteins function as repressors of translation when bound to the 3-untranslated region of RNA transcripts.

RIPAb+ antibodies are evaluated using the RNA Binding Protein Immunoprecipitation (RIP) assay. Each RIPAb+ antibody set includes a negative control antibody to ensure specificity of the RIP reaction and is verified for the co-immunoprecipitation of RNA associated specifically with the immunoprecipitated RNA-binding protein of interest. Where appropriate, the RIPAb+ set also includes quantitative RT-PCR control primers (RIP Primers) to biologically validate your IP results by successfully co-precipitating the specific RNA targets, such as messenger RNAs. The qPCR protocol and primer sequences are provided, allowing researchers to validate RIP protocols when using the antibody in their experimental context. If a target specific assay is not provided, the RIPAb+ kit is validated using an automated microfluidics-based assay by enrichment of detectable RNA over control immunoprecipitation.
PUM2 is a sequence-specific RNA-binding protein that regulates translation and mRNA stability by binding to the 3′-UTR of mRNA targets. The PUM class of proteins plays an active role in the sustainability of mitotic stem cell proliferation and the regulation of cell development and differentiation.


This antibody recognizes Pumilio-2 near the N-terminus.


Epitope: N-terminus

KLH-conjugated linear peptide corresponding to the N-terminus of human Pumilio-2.


Detect RIPAb+ PUM2 using this RIPAb+ PUM2 Antibody validated for use in ICC, IHC(P), Western Blotting, RNA Binding Protein Immunoprecipitation (RIP).

Research Category
Stem Cell Research

Research Sub Category
RNA Metabolism & Binding Proteins

Western Blot Analysis:
Representative lot data.
Mouse embryonic stem cell lysate was resolved by electrophoresis, transferred to PVDF membranes and probed with Anti-Pumilio 2 (PUM2) 1 µg/mL. Proteins were visualized using a Donkey Anti-Rabbit IgG conjugated to HRP and chemiluminescence detection system.
Arrow indicates PUM2 (~120 kDa).
Note: A non-specific band may be observed at ~48 kDa in some lysates. (Figure 2).
Immunohistochemistry (Parafin) Analysis:
Representative lot data.
Paraffin-embedded human testis (Fig. 3A) and human teratoma (Fig. 3B) tissues were prepared using heat-induced epitope retrieval in citrate buffer, pH 6.0. Immunostaining was performed using a 1:400 dilution of Anti-Pumilio 2 (PUM2). Reactivity was detected using the IHC-Select Detection Kit (Cat. No. DAB050). Staining pattern appears to be restricted to primary spermatocytes with no Sertoli cell involvement, as expected.
Immunocytochemistry Analysis:
Representative lot data.
Confocal fluorescent analysis of mouse and human embryonic stem cells using Anti-Pumilio 2 (PUM2) (Red). Actin filaments have been labeled with Alexa Fluor® 488 dye - Phalloidin (Green). Nucleus is stained with DAPI (Blue). (Figure 4) This antibody positively stains the nucleus and cytosol.

Target description

~120 kDa observed.
Non specific band may be observed at 48 kDa

Physical form

Affinity Purfied

Anti-PUM2 (Rabbit Polyclonal). One vial containing 50 µg of affinity purified polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl, with 0.05% sodium azide, before the addition of 30% glycerol. Store at -20°C.
Concentration: 0.7 mg/mL
Normal Rabbit IgG. One vial containing 125 µg Rabbit IgG in 125 µL storage buffer containing 0.05% sodium azide. Store at -20°C.
RIP Primers, NFKBIA mRNA. One vial containing 75 μL of each primer (5 μM) specific for a region of the human NFKBIA mRNA. Store at -20°C.

Storage and Stability

Stable for 1 year at -20°C from date of receipt. Handling Recommendations: Upon first thaw, and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.
Note: Variability in freezer temperatures below -20°C may cause glycerol containing solutions to become frozen during storage.


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.

Legal Information

ALEXA FLUOR is a registered trademark of Life Technologies

MAGNA RIP is a registered trademark of Merck KGaA, Darmstadt, Germany

UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany


10 assays per set. Recommended use: ~5 µg of antibody per RIP (dependent upon biological context).


RNA Binding Protein Immunoprecipitation:
Representative lot data.
RIP Lysate prepared from HeLa cells (2 X 10E7 cell equivalents per IP) were subjected to immunoprecipitation using 5 µg of either a normal rabbit IgG or 5 µg of Anti-PUM2 antibody and the Magna RIP® RNA Binding Protein Immunoprecipitation Kit (Cat. # 17-700).
Successful immunoprecipitation of PUM2-associated RNA was verified by qPCR using RIP Primers, NFKBIA mRNA, (Figure 1).
Please refer to the Magna RIP (Cat. # 17-700) or EZ-Magna RIP (Cat. # 17-701) protocol for experimental details.

Analysis Note

Includes normal rabbit IgG and primers specific for human NFKBIA mRNA.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Safety & Documentation

Safety Information

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


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