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The NCSTN gene provides instructions for making a protein called nicastrin. This protein is one part (subunit) of a complex called gamma- (γ-) secretase. Nicastrin plays a critical role in the assembly and stability of this complex.

Normal function

The NCSTN gene provides instructions for making a protein called nicastrin. This protein is one part (subunit) of a complex called gamma- (γ-) secretase. Nicastrin plays a critical role in the assembly and stability of this complex.

The γ-secretase complex is located in the membrane that surrounds cells, where it cuts apart (cleaves) many different proteins that span the cell membrane (transmembrane proteins). This cleavage is an important step in several chemical signaling pathways that transmit signals from outside the cell into the nucleus. One of these pathways, known as Notch signaling, is essential for the normal growth and maturation (differentiation) of hair follicle cells and other types of skin cells. Notch signaling is also involved in normal immune system function.

Conditions referring to this gene or chromosome

Other names

anterior pharynx-defective 2

APH2

ATAG1874

KIAA0253

NICA_HUMAN

nicastrin precursor

RP11-517F10.1

Further reading and references

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 27 Oct 2021 | Latest version
  • 1 Dec 2013 | Originally published

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