Product nameAnti-hnRNP A2B1 antibody
See all hnRNP A2B1 primary antibodies
DescriptionRabbit polyclonal to hnRNP A2B1
SpecificityThe peptide used as the immunogen for this antibody is found within isoform A2 and B1 of the protein and should thus recognize a doublet around 35/37 kDa.
Tested applicationsSuitable for: IHC-P, WB, ICC/IF, IPmore details
Species reactivityReacts with: Mouse, Rat, Human
Predicted to work with: Chicken, Dog, Xenopus laevis
Synthetic peptide corresponding to Human hnRNP A2B1 aa 50-150.
(Peptide available as
- WB: A549, HEK293T, HeLa, NIH 3T3, and MEF1 cell lysates, and mouse testis tissue lysate. IHC-P: Human colon tissue.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
Concentration information loading...
PurityImmunogen affinity purified
KO cell lysates
Our Abpromise guarantee covers the use of ab31645 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IHC-P||Use a concentration of 1 µg/ml. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.|
|WB||Use a concentration of 1 - 5 µg/ml. Detects a band of approximately 35, 38 kDa (predicted molecular weight: 35 , 37 kDa).|
|ICC/IF||Use a concentration of 5 µg/ml.|
|IP||Use at an assay dependent concentration.|
FunctionInvolved with pre-mRNA processing. Forms complexes (ribonucleosomes) with at least 20 other different hnRNP and heterogeneous nuclear RNA in the nucleous.
Sequence similaritiesContains 2 RRM (RNA recognition motif) domains.
Cellular localizationNucleus > nucleoplasm. Cytoplasm. Localized in cytoplasmic mRNP granules containing untranslated mRNAs. Component of ribonucleosomes. Predominantly nucleoplasmic, however isoform A2 is also found in the cytoplasm of cells in some tissues. Not found in the nucleolus.
- Information by UniProt
- Heterogeneous nuclear ribonucleoprotein A2 antibody
- Heterogeneous nuclear ribonucleoprotein A2/B1 antibody
- Heterogeneous nuclear ribonucleoprotein B1 antibody
All lanes : Anti-hnRNP A2B1 antibody (ab31645) at 1/500 dilution
Lane 1 : Wild-type HEK293T cell lysate
Lane 2 : knockout HEK293T cell lysate
Lane 3 : A549 cell lysate at 20 µg
Performed under reducing conditions.
Predicted band size: 35 , 37 kDa
Observed band size: 37 kDa why is the actual band size different from the predicted?
Lanes 1-3: Merged signal (red and green). Green – ab31645 observed at 37 kDa. Red - loading control, ab7291 observed at 50 kDa.
ab31645 was shown to react with HNRNPA2B1 in wild-type HEK293T cells in Western blot. Loss of signal was observed when knockout sample ab257224 was used. Wild-type and HNRNPA2B1 knockout samples were subjected to SDS-PAGE. ab31645 and Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) were incubated overnight at 4°C at 1 in 500 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti- Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti- Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 10000 dilution for 1 hour at room temperature before imaging.
Anti-hnRNP A2B1 antibody (ab31645) at 1 µg/ml + HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate at 20 µg
Goat polyclonal to Rabbit IgG (Alexa Fluor® 680) at 1/10000 dilution
Performed under reducing conditions.
Predicted band size: 35 , 37 kDa
Observed band size: 35,38 kDa why is the actual band size different from the predicted?
ab31645 is expected to recognize isoform hnrnp A2 and hnrnp B1. The antibody detects bands at approximately 35 and 38 kDa which are of the correct size to correspond to the predicted molecular weight of these isoforms.
ab31645 staining hnRNP A2B1 in CHO cell line by ICC/IF (Immunocytochemistry/immunofluorescence). Cells were fixed with paraformaldehyde, permeabilized with 0.1% Triton X-100 and blocked with 1% BSA for 1 hour at 21°C. Samples were incubated with primary antibody (1/200 in PBS + 1% BSA) for 1 hour 30 minutes at 21°C. An Alexa Fluor®488-conjugated Goat anti-rabbit IgG polyclonal (1/1000) was used as the secondary antibody. Green - hnRNP, Red -alpha tubulin, Blue - nuclei.
hnRNP A2B1 was immunoprecipitated using 0.5mg Hela whole cell extract, 5µg of Rabbit polyclonal to hnRNP A2B1 and 50µl of protein G magnetic beads (+). No antibody was added to the control (-).
The antibody was incubated under agitation with Protein G beads for 10min, Hela whole cell extract lysate diluted in RIPA buffer was added to each sample and incubated for a further 10min under agitation.
Proteins were eluted by addition of 40µl SDS loading buffer and incubated for 10min at 70oC; 10µl of each sample was separated on a SDS PAGE gel, transferred to a nitrocellulose membrane, blocked with 5% BSA and probed with ab31645.
Secondary: Mouse monoclonal [SB62a] Secondary Antibody to Rabbit IgG light chain (HRP) (ab99697).
Band: 35kDa: hnRNP A2B1.
IHC image of ab31645 staining in human colon formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab31645, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.
For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.
ICC/IF image of ab31645 stained human MCF7 cells. The cells were 4% PFA fixed (10 min), permabilised in 0.1% PBS-Tween (20 min) and incubated with the antibody (ab31645, 5µg/ml) for 1h at room temperature. 1%BSA / 10% normal goat serum / 0.3M glycine was used to block non-specific protein-protein interactions. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red). DAPI was used to stain the cell nuclei (blue). This antibody also gave a positive result in 4% PFA fixed (10 min) Hek293 and HepG2 cells at 5µg/ml.
This product has been referenced in:
- Liu Y et al. The UCA1/KRAS axis promotes human pancreatic ductal adenocarcinoma stem cell properties and tumor growth. Am J Cancer Res 9:496-510 (2019). Read more (PubMed: 30949406) »
- Zheng Z et al. Increased Expression of Exosomal AGAP2-AS1 (AGAP2 Antisense RNA 1) In Breast Cancer Cells Inhibits Trastuzumab-Induced Cell Cytotoxicity. Med Sci Monit 25:2211-2220 (2019). Read more (PubMed: 30910994) »