Validated using a knockout cell line

Recombinant Anti-Calnexin antibody [EPR3632] - BSA and Azide free (ab232433)


  • Product name

    Anti-Calnexin antibody [EPR3632] - BSA and Azide free
    See all Calnexin primary antibodies
  • Description

    Rabbit monoclonal [EPR3632] to Calnexin - BSA and Azide free
  • Host species

  • Specificity

    Recognizes ER membrane, mitochondria and cis-Golgi
  • Tested applications

    Suitable for: WB, IP, IHC-P, ICC/IFmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human Calnexin aa 1-100. The exact sequence is proprietary.
    Database link: P27824

  • Positive control

    • WB: Wild-type HAP1 cell lysate. THP-1 cell lysate.
  • General notes

    Ab232433 is the carrier-free version of ab92573. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.


    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    ab232433 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.??

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.



Our Abpromise guarantee covers the use of ab232433 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent concentration. Predicted molecular weight: 68 kDa.
IP Use at an assay dependent concentration.
IHC-P Use at an assay dependent concentration.
ICC/IF Use at an assay dependent concentration.


  • Function

    Calcium-binding protein that interacts with newly synthesized glycoproteins in the endoplasmic reticulum. It may act in assisting protein assembly and/or in the retention within the ER of unassembled protein subunits. It seems to play a major role in the quality control apparatus of the ER by the retention of incorrectly folded proteins.
  • Sequence similarities

    Belongs to the calreticulin family.
  • Cellular localization

    Endoplasmic reticulum membrane. Melanosome. Identified by mass spectrometry in melanosome fractions from stage I to stage IV.
  • Information by UniProt
  • Database links

  • Alternative names

    • Calnexin antibody
    • CALX_HUMAN antibody
    • CANX antibody
    • CNX antibody
    • FLJ26570 antibody
    • Histocompatibility complex class I antigen binding protein p88 antibody
    • IP90 antibody
    • Major histocompatibility complex class I antigen-binding protein p88 antibody
    • p90 antibody
    see all


  • Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: Calnexin knockout HAP1 cell lysate (20 µg)
    Lane 3: THP-1 cell lysate (20 µg)
    Lane 4: RAW 264.7 cell lysate (20 µg)
    Lanes 1 - 4: Merged signal (red and green). Green - ab92573 observed at 80 kDa. Red - loading control, ab8245, observed at 37 kDa.

    ab92573 was shown to specifically react with Calnexin when Calnexin knockout samples were used. Wild-type and Calnexin knockout samples were subjected to SDS-PAGE. ab92573 and ab8245 (loading control to GAPDH) were diluted at 1/20,000 and 1/10,000 respectively and incubated overnight at 4°C. 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 1/10,000 dilution for 1 hour at room temperature before imaging.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab92573).

  • ab92573 staining Calnexin in wild-type HAP1 cells (top panel) and CANX knockout HAP1 cells (bottom panel). The cells were fixed with 100% methanol (5min), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1h. The cells were then incubated with ab92573 at 1/1000 dilution and ab195889 at 1/250 dilution (shown in pseudocolour red) overnight at +4°C, followed by a further incubation at room temperature for 1h with a goat secondary antibody to Rabbit IgG (Alexa Fluor® 488) (ab150081) at 2 μg/ml (shown in green). Nuclear DNA was labelled in blue with DAPI.

    Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab92573).

  • Immunocytochemistry/Immunofluorescence analysis of human lung carcinoma A549 cells labelling Calnexin with ab92573. Cells were fixed with 4% PFA in PBS for 15 minutes washed three times with PBS, and then washed twice with 25 mM glycine–PBS. The cells were treated with cold methanol and washed three times with 0.3% Triton X-100 in PBS for permeabilization. The fixed cells were blocked with 5% BSA in PBS overnight. An Alexa Fluor® 594-conjugated anti-rabbit was used as the secondary antibody.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab92573).

  • Immunohistochemical analysis of paraffin embedded Human tonsil tissue using ab92573 at a 1/100 dilution.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab92573).


ab232433 has not yet been referenced specifically in any publications.

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