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Nat Struct Mol Biol. 2007 Apr;14(4):295-300. Epub 2007 Apr 1.

Structural basis for autoinhibition of Notch.

Author information

1
Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, 77 Ave. Louis Pasteur, Boston, Massachusetts 02115, USA.

Erratum in

  • Nat Struct Mol Biol. 2007 May;14(5):455.

Abstract

Notch receptors transmit signals between adjacent cells. Signaling is initiated when ligand binding induces metalloprotease cleavage of Notch within an extracellular negative regulatory region (NRR). We present here the X-ray structure of the human NOTCH2 NRR, which adopts an autoinhibited conformation. Extensive interdomain interactions within the NRR bury the metalloprotease site, showing that a substantial conformational movement is necessary to expose this site during activation by ligand. Leukemia-associated mutations in NOTCH1 probably release autoinhibition by destabilizing the conserved hydrophobic core of the NRR.

PMID:
17401372
DOI:
10.1038/nsmb1227
[Indexed for MEDLINE]

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