@article{Kakugawa:2015:10.1038/nature14259,
author = {Kakugawa, S and Langton, PF and Zebisch, M and Howell, SA and Chang, T-H and Liu, Y and Ten, F and Bineva, G and O'Reilly, N and Snijders, AP and Jones, EY and Vincent, J-P},
doi = {10.1038/nature14259},
journal = {Nature},
pages = {187--192},
title = {Notum deacylates Wnt proteins to suppress signalling activity},
url = {http://dx.doi.org/10.1038/nature14259},
volume = {519},
year = {2015}
}

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TY  - JOUR
AB  - Signalling by Wnt proteins is finely balanced to ensure normal development and tissue homeostasis while avoiding diseases such as cancer. This is achieved in part by Notum, a highly conserved secreted feedback antagonist. Notum has been thought to act as a phospholipase, shedding glypicans and associated Wnt proteins from the cell surface. However, this view fails to explain specificity, as glypicans bind many extracellular ligands. Here we provide genetic evidence in Drosophila that Notum requires glypicans to suppress Wnt signalling, but does not cleave their glycophosphatidylinositol anchor. Structural analyses reveal glycosaminoglycan binding sites on Notum, which probably help Notum to co-localize with Wnt proteins. They also identify, at the active site of human and Drosophila Notum, a large hydrophobic pocket that accommodates palmitoleate. Kinetic and mass spectrometric analyses of human proteins show that Notum is a carboxylesterase that removes an essential palmitoleate moiety from Wnt proteins and thus constitutes the first known extracellular protein deacylase.
AU  - Kakugawa,S
AU  - Langton,PF
AU  - Zebisch,M
AU  - Howell,SA
AU  - Chang,T-H
AU  - Liu,Y
AU  - Ten,F
AU  - Bineva,G
AU  - O'Reilly,N
AU  - Snijders,AP
AU  - Jones,EY
AU  - Vincent,J-P
DO  - 10.1038/nature14259
EP  - 192
PY  - 2015///
SN  - 0028-0836
SP  - 187
TI  - Notum deacylates Wnt proteins to suppress signalling activity
T2  - Nature
UR  - http://dx.doi.org/10.1038/nature14259
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350770500029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.nature.com/articles/nature14259
UR  - http://hdl.handle.net/10044/1/83135
VL  - 519
ER  - 

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