|Reactivity||Human, Mouse, Rat|
|Calculated MW||52668 Da|
|Application & Usage||Western blotting (2-4 µg/ml). However, the optimal concentrations should be determined individually. The antibody recognizes Presenilin 1 of human, mouse, and rat origins. Reactivity to other species has not been tested.|
|Other Names||PSEN1, Presenilin-1; PS-1; Protein S182; Presenilin-1 NTF subunit; Presenilin-1 CTF subunit; Presenilin-1 CTF12; PS1-CTF12|
|Formulation||100 µg (0.5 mg/ml) purified rabbit polyclonal antibody in phosphate-buffered saline (PBS) containing 50% glycerol, 1% BSA, and 0.02% sodium azide.|
|Handling||The antibody solution should be gently mixed before use.|
|Reconstitution & Storage||-20 °C|
|Precautions||Presenilin 1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||AD3, PS1, PSNL1|
|Function||Probable catalytic 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). Requires the other members of the gamma-secretase complex to have a protease activity. May play a role in intracellular signaling and gene expression or in linking chromatin to the nuclear membrane. Stimulates cell-cell adhesion though its association with the E-cadherin/catenin complex. Under conditions of apoptosis or calcium influx, cleaves E-cadherin promoting the disassembly of the E-cadherin/catenin complex and increasing the pool of cytoplasmic beta-catenin, thus negatively regulating Wnt signaling. May also play a role in hematopoiesis.|
|Cellular Location||Endoplasmic reticulum membrane; Multi-pass membrane protein. Golgi apparatus membrane; Multi-pass membrane protein. Cell surface. Cell membrane. Note=Bound to NOTCH1 also at the cell surface. Colocalizes with CDH1/2 at sites of cell-cell contact. Colocalizes with CTNNB1 in the endoplasmic reticulum and the proximity of the plasma membrane. Also present in azurophil granules of neutrophils. Colocalizes with UBQLN1 in the cell membrane and in cytoplasmic juxtanuclear structures called aggresomes (PubMed:21143716).|
|Tissue Location||Expressed in a wide range of tissues including various regions of the brain, liver, spleen and lymph nodes|
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Presenilin 1 and presenilin 2 are transmembrane proteins belonging to the presenilin family. Mutation of presenilin genes has been linked to early onset of Alzheimer’s disease, probably functioning thro µgh its associated g-secretase activity for amyloid-β protein processing. Endogenous presenilin mainly exists in a heterodimeric complex formed from the endoproteolytically processed N-terminal (34 kDa) and C-terminal (~20 kDa) fragments.
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