		Technical Data
A2296-83E	APH1A (Gamma-secretase Subunit APH-1A, APH-1a, Aph-1alpha, Presenilin-stabilization Factor, PSF, CGI-78, UNQ579/PRO1141)

Description:
APH1 is an essential subunit of the gamma-secretase complex, an endoprotease complex that catalyzes the intramembrane cleavage of integral proteins such as Notch receptors and APP (beta-amyloid precursor protein). The gamma-secretase complex is minimally composed of a presenilin homodimer (PSEN1 or PSEN2), nicastrin (NCSTN), APH1 (APH1A or APH1B) and PEN2, although other components may exist. APH1 probably represents a stabilizing cofactor for the presenilin homodimer that promotes the formation of a stable complex. APH1 is widely expressed in leukocytes, lung, placenta, small intestine, liver, kidney, spleen thymus, skeletal muscle, heart and brain.

Applications:
Suitable for use in ELISA and Western Blot. Other applications not tested.

Recommended Dilution:
ELISA: 1:128,000
Western Blot: 0.05-0.1ug/ml, observed in human brain, cerebral cortex, lysates on ~26kD bands
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Type	Isotype	Clone	Grade
Pab			Affinity Purified

Size		Storage	Shipping	Source	Host
100ug		-20°C	Blue Ice	Human	Goat

Concentration:

~0.5mg/ml

Immunogen:

Synthetic peptide corresponding to C-HVTDRSDARLQYG, from human APH1A, at the internal region of the protein (NP_001071096.1, NP_057106.2).

Purity:

Purified by immunoaffinity chromatography.

Form

Supplied as a liquid in Tris saline, 0.02% sodium azide, pH 7.3, 0.5% BSA.

Specificity:

Recognizes human APH1A. Species sequence homology: Bovine, canine, mouse, porcine and rat.

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.

1. Spasic D, Raemaekers T, Dillen K, Declerck I, Baert V, Serneels L, Fullekrug J, Annaert W. Rer1p competes with APH-1 for binding to nicastrin and regulates gamma-secretase complex assembly in the early secretory pathway. J Cell Biol. 2007 Feb 26;176(5):629-40.