| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | Psen2, Ps2, Psnl2, AD3LP, AD5, E5-1 STM-2 |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Overview
Anti-Presenilin-2 Antibody is an antibody targeting Psen2, Ps2, Psnl2, AD3LP, AD5, E5-1 STM-2 Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IHC, WB to detect, localize, or compare expression of the target across samples.
Key elements and design rationale
- Target: Psen2, Ps2, Psnl2, AD3LP, AD5, E5-1 STM-2 (also reported as Psen2, Ps2, Psnl2, AD3LP, AD5, E5-1 STM-2).
- Immunogen/epitope region: Intracellular, N-terminus.
- Homology note: Mouse, human - 13/14 amino acid residues identical (informative for cross-species interpretation).
- Species reactivity (as provided): Human, Rat, Mouse.
- Lot quality control (as provided): Western blot analysis.
- Peptide confirmation: Confirmed by amino acid analysis and mass spectrometry.
- Blocking peptide: Available for antigen preadsorption control where appropriate.
- Conjugate/format: Unconjugated (may affect detection channel and background).
These attributes help researchers interpret whether signal reflects the intended target in a given assay and sample context.
Biological background
Presenilin 2 (PS2) is the catalytic subunit of a tetrameric complex containing presenilin-1 or 2, anterior pharynx defective 1 (APH1), nicastrin, and PEN-21.The presenilin complex is the founding member of a unique class of GXGD aspartyl proteases that catalyze the cleavage of the transmembrane domains of Type I membrane proteins including amyloid precursor protein (APP) and Notch1. Other members of this protease family include signal peptide peptidases (SPP) and a variety of archaeal homologs2.PS1 and PS2 proteins have nine helical TM domains arranged with the hydrophilic, flexible N terminus in the cytosol and the C terminus protruding into the lumen or extracellular space3.PS2 shares similarity with PS 1 and the crucial difference between them appears to be a "[DIE]xxxL/I/M" motif present only in PS2 which interacts in a phosphorylation dependent manner with AP-1 complexes and targets PS2 to the late endosome/lysosome complex. The absence of this sequence motif in PS1 allows for the wider subcellular location of PS1 in cell membranes4.Presenilin mutations have been shown to be correlated with occurrence of familial Alzheimer's disease5.
Research relevance and current trends
- Comparing target expression across perturbations, genotypes, or treatment conditions.
- Interpreting localization shifts alongside pathway or phenotypic readouts.
- Using orthogonal controls (KO/KD, peptide competition, isotype concepts) to support conclusions.
Common research applications
- Western blot (WB): compare target abundance/size across lysates and conditions; consider isoforms/PTMs.
- Immunohistochemistry (IHC): examine spatial distribution in tissue and relate signal to cell-type composition.
Interpretation typically benefits from comparing matched sample sets (e.g., treated vs control, WT vs KO/KD) and using orthogonal readouts where feasible.
Notes for experimental interpretation
- Isoforms and post-translational modifications can shift apparent molecular weight or epitope accessibility across samples.
- Cross-species signal may depend on epitope conservation; consult the provided homology note when selecting models.
- Permeabilization, fixation, and antigen retrieval can change accessibility of intracellular vs extracellular epitopes.
- Conceptual control: antigen preadsorption (blocking peptide) can help assess signal dependence on the immunogen region.
- Provided control suggestions: Negative control: BLP-IP012.
- Application notes: see product-specific dilution/usage notes and control concepts provided in the dataset.
Application abbreviations: CBE- Cell-based ELISA, FC- Flow cytometry, ICC- Immunocytochemistry, IE- Indirect ELISA, IF- Immunofluorescence, IFC- Indirect flow cytometry, IHC- Immunohistochemistry, IP- Immunoprecipitation, LCI- Live cell imaging, N- Neutralization, WB- Western blot. Species abbreviations: H- Human, M- Mouse, R- Rat.
Recommended controls: Blocking peptide: BLP-IP012; Negative control: BLP-IP012.
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
