• Product name

  • Description

    Rabbit polyclonal to ATG4B
  • Host species

  • Tested applications

    Suitable for: WBmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse
  • Immunogen

    Synthetic peptide corresponding to Human ATG4B aa 50-150 conjugated to keyhole limpet haemocyanin.
    (Peptide available as ab98899)

  • Positive control

    • This antibody gave a positive signal in Human Heart and Liver Tissue Lysates.



Our Abpromise guarantee covers the use of ab72878 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 a concentration of 1 µg/ml. Detects a band of approximately 48 kDa (predicted molecular weight: 44 kDa).


  • Function

    Cysteine protease required for autophagy, which cleaves the C-terminal part of either MAP1LC3, GABARAPL2 or GABARAP, allowing the liberation of form I. A subpopulation of form I is subsequently converted to a smaller form (form II). Form II, with a revealed C-terminal glycine, is considered to be the phosphatidylethanolamine (PE)-conjugated form, and has the capacity for the binding to autophagosomes.
  • Tissue specificity

    Mainly expressed in the skeletal muscle, followed by brain, heart, liver and pancreas.
  • Sequence similarities

    Belongs to the peptidase C54 family.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • APG4 autophagy 4 homolog B antibody
    • APG4B antibody
    • ATG4 autophagy related 4 homolog B (S. cerevisiae) antibody
    • ATG4B antibody
    • ATG4B_HUMAN antibody
    • AUT like 1 cysteine endopeptidase antibody
    • AUT-like 1 cysteine endopeptidase antibody
    • AUTL1 antibody
    • Autophagin 1 antibody
    • Autophagin-1 antibody
    • Autophagy related 4B cysteine peptidase antibody
    • Autophagy related cysteine endopeptidase 1 antibody
    • Autophagy related protein 4 homolog B antibody
    • Autophagy-related cysteine endopeptidase 1 antibody
    • Autophagy-related protein 4 homolog B antibody
    • Cysteine protease ATG4B antibody
    • hAPG4B antibody
    • MGC1353 antibody
    see all


  • Lane 1: Wild type HAP1 whole cell lysate (20 µg)
    Lane 2: ATG4B knockout HAP1 whole cell lysate (20 µg)
    Lane 3: HeLa whole cell lysate (20 µg)

    Lanes 1 - 3: Merged signal (red and green). Green - ab72878 observed at 44 kDa. Red - loading control, ab18058, observed at 130 kDa.

    ab72878 was shown to recognize ATG4B when ATG4B knockout samples were used, along with additional cross-reactive bands. Wild-type and ATG4B knockout samples were subjected to SDS-PAGE. ab72878 and ab18058 (Mouse anti-Vinculin loading control) were incubated overnight at 4°C at 1 ug/ml and 1/10000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed ab216776 secondary antibodies at 1/10000 dilution for 1 hour at room temperature before imaging.

  • All lanes : Anti-ATG4B antibody (ab72878) at 1 µg/ml

    Lane 1 : Human heart tissue lysate - total protein (ab29431)
    Lane 2 : Human liver tissue lysate - total protein (ab29889)

    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: 48 kDa
    why is the actual band size different from the predicted?

    Exposure time: 16 minutes


ab72878 has not yet been referenced specifically in any publications.

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