• Species Reactivity

  Human

• Specificity

  Detects human Presenilin‑2 N-Terminal Fragment in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant human Presenilin‑1 N-Terminal Fragment (aa 1‑80) and recombinant human Presenilin‑2 C-Terminal Fragment (aa 308‑388) is observed.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  E. coli-derived recombinant human Presenilin-2    
  Leu2-Thr80    
  Accession # P49810

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  0.1 µg/mL

  Recombinant Human Presenilin‑2 N-Terminal Fragment

• 
  

• Immunohistochemistry

  5-15 µg/mL

  Immersion fixed paraffin-embedded sections of human brain (hippocampus)

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Presenilin-2

Presenilin‑2 (PS-2 and PSEN2) is a catalytic subunit of the gamma-secretase complex. Presenilin‑2 may play a role in intracellular signaling and gene expression or in linking chromatin to the nuclear membrane. Heterogeneous proteolytic processing of Presenilin‑2 generates N-terminal (aa 1-297) and C-terminal (aa 298-248) fragments. Presenilin 1 and Presenilin 2 determine gamma-secretase activity, which is responsible for cleaving the amyloid precursor protein (APP). In turn, APP cleavage can produce amyloid-beta, which is the primary component of plaques in the brains of Alzheimer’s disease patients. Full length, approximately 50 kDa, and the approximately 30 kDa N-terminal fragment of Presenilin-2 were identified by western blotting in extracted rodent pancreas but only the 30 kDa fragment was detected in mouse islets and human insulinoma. Within a sequence correspondent to the immunogen, human PS-2 shares 87% aa sequence identity with mouse and rat PS-2.

• Entrez Gene IDs:

  5664 (Human)

• Alternate Names:

  AD3LP; AD4AD3L; AD5; E5-1; EC 3.4.23; EC 3.4.23.-; presenilin 2 (Alzheimer disease 4); Presenilin2; Presenilin-2; PS-2; PS2CMD1V; PSEN2; PSNL2; STM2STM-2