• Product name
  • Description
    Rabbit polyclonal to PTRF
  • Host species
  • Tested applications
    Suitable for: IHC-P, WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse
    Predicted to work with: Rat, Chicken, Human, Xenopus laevis
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 150 - 250 of Mouse PTRF.

    (Peptide available as ab88117.)

  • Positive control
    • This antibody gave a positive signal in the following lysates: NIH 3T3 whole cell; MEF1 whole cell; Mouse liver tissue



Our Abpromise guarantee covers the use of ab78553 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
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
WB Use a concentration of 1 µg/ml. Detects a band of approximately 56 kDa (predicted molecular weight: 44 kDa).
ICC/IF Use a concentration of 5 µg/ml.


  • Function
    Plays an important role in caveolae formation and organization. Required for the sequestration of mobile caveolin into immobile caveolae. Termination of transcription by RNA polymerase I involves pausing of transcription by TTF1, and the dissociation of the transcription complex, releasing pre-rRNA and RNA polymerase I from the template. PTRF is required for dissociation of the ternary transcription complex.
  • Involvement in disease
    Congenital generalized lipodystrophy 4
  • Sequence similarities
    Belongs to the PTRF/SDPR family.
  • Post-translational
    Phosphorylated. Present in active and inactive forms. Changes in phosphorylation pattern may alter activity.
    Five truncated forms are found in the caveolae. These are thought to be the result of proteolysis and may be phosphorylation-dependent.
  • Cellular localization
    Membrane > caveola. Cell membrane. Microsome. Endoplasmic reticulum. Cytoplasm > cytosol. Mitochondrion. Nucleus. Found at the surface of the caveolae. Also found in the plasma membrane, microsomal and cytosolic fractions and at a low level in the mitochondrial and nuclear fractions. Translocates to the cytoplasm from the caveolae upon insulin stimulation. CAV1 is necessary to recruit it to the cell membrane (By similarity). Co-localizes with CAV1 in lipid rafts in adipocytes.
  • Information by UniProt
  • Database links
  • Alternative names
    • 2310075E07Rik antibody
    • AW546441 antibody
    • Cavin 1 antibody
    • Cavin antibody
    • Cavin-1 antibody
    • CAVIN1 antibody
    • CGL4 antibody
    • FKSG13 antibody
    • FLJ90031 antibody
    • MGC118550 antibody
    • OTTMUSP00000002049 antibody
    • Polymerase I and transcript release factor antibody
    • Ptrf antibody
    • PTRF_HUMAN antibody
    • RNA polymerase I and transcript release factor antibody
    • RP23-279L23.6 antibody
    • TTF I interacting peptide 12 antibody
    see all


  • All lanes : Anti-PTRF antibody (ab78553) at 1 µg/ml

    Lane 1 : NIH 3T3 (Mouse embryonic fibroblast cell line) Whole Cell Lysate
    Lane 2 : MEF1 (Mouse embryonic fibroblast cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    All lanes : Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 44 kDa
    Observed band size: 56 kDa (why is the actual band size different from the predicted?)
    Additional bands at: 14 kDa. We are unsure as to the identity of these extra bands.

    Exposure time: 3 minutes

    PTRF contains a number of potential phosphorylation sites (SwissProt data) which may explain it running at a higher molecular weight than predicted. The 56 kDa band is comparable to molecular weights seen with other commercially available antibodies to PTRF.
  • ICC/IF image of ab78553 stained HeLa cells. The cells were 4% PFA fixed (10 min) and then incubated in 1%BSA / 10% normal Goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab78553, 5µg/ml) overnight at +4°C. 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) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
  • IHC image of PTRF staining in normal human liver 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 ab78553, 5ug/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.


This product has been referenced in:
  • Krawczyk KM  et al. Injury induced expression of caveolar proteins in human kidney tubules - role of megakaryoblastic leukemia 1. BMC Nephrol 18:320 (2017). Read more (PubMed: 29065889) »

See 1 Publication for this product

Customer reviews and Q&As

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Rat Tissue sections (Testis and Epididymis)
Antigen retrieval step
Testis and Epididymis
Blocking step
Hydrogen peroxide containing sodium azide (Dako EnVision+system-HRP- DAB kit) as blocking agent for 5 minute(s) · Concentration: 0.03% · Temperature: 24°C

Dr. Regiana Lúcia De Oliveira

Verified customer

Submitted Jul 23 2015


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