Recombinant Anti-PEX19 antibody [EPR9266(B)] - BSA and Azide free (ab232421)


  • Product name

    Anti-PEX19 antibody [EPR9266(B)] - BSA and Azide free
    See all PEX19 primary antibodies
  • Description

    Rabbit monoclonal [EPR9266(B)] to PEX19 - BSA and Azide free
  • Host species

  • Tested applications

    Suitable for: WB, IP, Flow Cyt, ICC/IFmore details
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide within Human PEX19 aa 1-100. The exact sequence is proprietary.
    Database link: P40855

  • Positive control

    • Flow Cyt: Jurkat cells.
  • General notes

    Ab232421 is the carrier-free version of ab137072. 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.

    ab232421 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 ab232421 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: 33 kDa.
IP Use at an assay dependent concentration.
Flow Cyt Use at an assay dependent concentration.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

ICC/IF Use at an assay dependent concentration.


  • Function

    Necessary for early peroxisomal biogenesis. Acts both as a cytosolic chaperone and as an import receptor for peroxisomal membrane proteins (PMPs). Binds and stabilizes newly synthesized PMPs in the cytoplasm by interacting with their hydrophobic membrane-spanning domains, and targets them to the peroxisome membrane by binding to the integral membrane protein PEX3. Excludes CDKN2A from the nucleus and prevents its interaction with MDM2, which results in active degradation of TP53.
  • Tissue specificity

    Ubiquitously expressed. Isoform 1 is strongly predominant in all tissues except in utero where isoform 2 is the main form.
  • Involvement in disease

    Defects in PEX19 are the cause of peroxisome biogenesis disorder complementation group 14 (PBD-CG14) [MIM:600279]; also known as PBD-CGJ. PBD refers to a group of peroxisomal disorders arising from a failure of protein import into the peroxisomal membrane or matrix. The PBD group is comprised of four disorders: Zellweger syndrome (ZWS), neonatal adrenoleukodystrophy (NALD), infantile Refsum disease (IRD), and classical rhizomelic chondrodysplasia punctata (RCDP). ZWS, NALD and IRD are distinct from RCDP and constitute a clinical continuum of overlapping phenotypes known as the Zellweger spectrum. The PBD group is genetically heterogeneous with at least 14 distinct genetic groups as concluded from complementation studies.
    Defects in PEX19 are a cause of Zellweger syndrome (ZWS) [MIM:214100]. ZWS is a fatal peroxisome biogenesis disorder characterized by dysmorphic facial features, hepatomegaly, ocular abnormalities, renal cysts, hearing impairment, profound psychomotor retardation, severe hypotonia and neonatal seizures. Death occurs within the first year of life.
  • Sequence similarities

    Belongs to the peroxin-19 family.
  • Cellular localization

    Cytoplasm. Peroxisome membrane. Mainly cytoplasmic. Some fraction membrane-associated to the outer surface of peroxisomes.
  • Information by UniProt
  • Database links

  • Alternative names

    • 33 kDa housekeeping protein antibody
    • D1S2223E antibody
    • HK33 antibody
    • Housekeeping gene 33kD antibody
    • OK/SW-cl.22 antibody
    • PBD12A antibody
    • Peroxin 19 antibody
    • Peroxin-19 antibody
    • Peroxisomal biogenesis factor 19 antibody
    • Peroxisomal farnesylated protein antibody
    • PEX19 antibody
    • PEX19_HUMAN antibody
    • PMP1 antibody
    • PMPI antibody
    • PXF antibody
    • PXMP1 antibody
    see all


  • ab137072 (purified) at 1:50 dilution (2µg) immunoprecipitating PEX19 in MOLT-4 whole cell lysate.
    Lane 1 (input): MOLT-4 (Human lymphoblastic leukemia T lymphoblast) whole cell lysate 10µg
    Lane 2 (+): ab137072 & MOLT-4 whole cell lysate
    Lane 3 (-): Rabbit monoclonal IgG (ab172730) instead of ab137072 in MOLT-4 whole cell lysate
    For western blotting, VeriBlot for IP Detection Reagent (HRP) (ab131366) was used for detection at 1:1000 dilution.
    Blocking and diluting buffer: 5% NFDM/TBST.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab137072).

  • Immunocytochemistry/ Immunofluorescence analysis of MOLT-4 (Human lymphoblastic leukemia T lymphoblast) cells labeling PEX19 with Purified ab137072 at 1:100 (10.2 µg/ml). Cells were fixed in 4% Paraformaldehyde and permeabilized with 0.1% tritonX-100. Cells were counterstained with Ab195889 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) 1:200 (2.5 µg/ml). Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) was used as the secondary antibody at 1:1000 (2 µg/ml) dilution. DAPI nuclear counterstain. PBS instead of the primary antibody was used as the secondary antibody only control.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab137072).

  • Flow cytometric analysis of permeabilized Jurkat (Human T cell leukemia cell line from peripheral blood) cells labeling PEX19 with ab137072 (red) or a rabbit IgG (negative) (green).

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab137072).


ab232421 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab232421.
Please use the links above to contact us or submit feedback about this product.

For licensing inquiries, please contact

Sign up