• Product nameAnti-PEN2 antibody
    See all PEN2 primary antibodies
  • Description
    Rabbit polyclonal to PEN2
  • Specificityab18189 specifically detects mouse 12kDa Pen2 protein in lung lysate. A number of higher MW bands are also detected (~50 and ~100kDa bands) which may be because a proportion of Pen2 is found bound to components of the gamma secretase complex (see the Relevance section). All bands detected with ab18189 in mouse lung lysate were blocked with the immunising peptide ab19147. Human Pen2 protein was also detected (weakly) in lung lysates with ab18189 (2ug/ml) in our hands and all detected bands blocked by immunising peptide ab19147.
  • Tested applicationsSuitable for: WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 1 - 100 of Human PEN2.

    (Peptide available as ab19147.)

  • Positive control
    • For endogenous sample testing in (e.g. in lung, spleen or brain tissue), it is suggested that the investigator load a greater amount of protein on the gel and combine immunoprecipitation with Western blot analysis. This antibody gave a positive result in HeLa cell line in ICC/IF
  • General notes

    PEN2 is a functional component of the gamma-secretase complex; coimmunoprecipitation of endogenous PEN2 and PS1 fragments using PS1 antibodies has been reported (Steiner et al, 2002).


Associated products


Our Abpromise guarantee covers the use of ab18189 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 2 µg/ml. Detects a band of approximately 11.9 kDa (predicted molecular weight: 12 kDa).
ICC/IF Use a concentration of 1 µg/ml.


  • FunctionEssential subunit of the gamma-secretase complex, an endoprotease complex that catalyzes the intramembrane cleavage of integral membrane proteins such as Notch receptors and APP (beta-amyloid precursor protein). Probably represents the last step of maturation of gamma-secretase, facilitating endoproteolysis of presenilin and conferring gamma-secretase activity.
  • Tissue specificityWidely expressed. Expressed in leukocytes, lung, placenta, small intestine, liver, kidney, spleen thymus, skeletal muscle, heart and brain.
  • Sequence similaritiesBelongs to the PEN-2 family.
  • Cellular localizationEndoplasmic reticulum membrane. Golgi apparatus > Golgi stack membrane. Predominantly located in the endoplasmic reticulum and in the cis-Golgi.
  • Information by UniProt
  • Database links
  • Alternative names
    • Gamma secretase subunit PEN 2 antibody
    • Gamma Secretase Subunit PEN2 antibody
    • Gamma-secretase subunit PEN-2 antibody
    • Hematopoietic stem/progenitor cells protein MDS033 antibody
    • MDS033 antibody
    • MSTP064 antibody
    • PEN 2 antibody
    • PEN2_HUMAN antibody
    • Presenilin Enhancer 2 antibody
    • Presenilin enhancer 2 homolog antibody
    • Presenilin enhancer protein 2 antibody
    • PSEN2 antibody
    • psenen antibody
    see all

Anti-PEN2 antibody images

  • All lanes : Anti-PEN2 antibody (ab18189) at 2 µg/ml

    Lane 1 : Mouse Lung Lysate
    Lane 2 : Mouse Lung Lysate with Human PEN2 peptide (ab19147) at 1 µg/ml

    Lysates/proteins at 20 µg per lane.

    Alexa Fluor Goat polyclonal to Rabbit at 1/10000 dilution

    Performed under reducing conditions.

    Predicted band size : 12 kDa
    Observed band size : 12 kDa
    Additional bands at : 50-60 kDa,95-100 kDa. We are unsure as to the identity of these extra bands.
  • ICC/IF image of ab18189 stained HeLa cells. The cells were 100% methanol fixed (5 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 (ab18189, 5µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899, DyLight® 488 goat anti-rabbit IgG (H+L) used at a 1/250 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.

References for Anti-PEN2 antibody (ab18189)

This product has been referenced in:
  • Greenough MA  et al. Presenilins Promote the Cellular Uptake of Copper and Zinc and Maintain Copper Chaperone of SOD1-dependent Copper/Zinc Superoxide Dismutase Activity. J Biol Chem 286:9776-86 (2011). WB ; Human . Read more (PubMed: 21239495) »
  • Placanica L  et al. Characterization of an atypical gamma-secretase complex from hematopoietic origin. Biochemistry 49:2796-804 (2010). WB ; Human . Read more (PubMed: 20178366) »

See all 3 Publications for this product

Product Wall

Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Blocking step BSA as blocking agent for 10 minute(s) · Concentration: 1% · Temperature: 21°C
Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Citric acid
Sample Rat Tissue sections (Brain)
Specification Brain
Permeabilization No
Fixative Formaldehyde

Mr. Carl Hobbs

Verified customer

Submitted Oct 04 2013

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Sample Human Tissue sections (Breast Carcinoma)
Specification Breast Carcinoma
Fixative Formaldehyde
Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Citric acid
Permeabilization No
Blocking step BSA as blocking agent for 10 minute(s) · Concentration: 1% · Temperature: 21°C

Mr. Carl Hobbs

Verified customer

Submitted Feb 25 2013

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunohistochemistry (PFA perfusion fixed frozen sections)
Sample Rat Tissue sections (Brain)
Specification Brain
Fixative Paraformaldehyde
Permeabilization No

Dr. Sophie Pezet

Verified customer

Submitted Mar 20 2012

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Western blot
Sample Mouse Tissue lysate - other (Brain membrane preparations)
Loading amount 20 µg
Specification Brain membrane preparations
Gel Running Conditions Reduced Denaturing (12% Tris-glycine)
Blocking step Casein as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 0.5% · Temperature: 22°C

Mr. Michael Ho

Verified customer

Submitted Jul 10 2009