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J. Biol. Chem., Vol. 277, Issue 28, 25562-25567, July 12, 2002
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From the Acetylation controls the activity of numerous
proteins involved in regulating gene transcription as well as many
other cellular processes. In this report we show that the CREB-binding
protein (CBP) acetyltransferase acetylates
Acetylation of
-Catenin by CREB-binding
Protein (CBP)*
§¶,
,
,
**, and

Wellcome/CRC (Cancer Research Campaign)
Institute and Department of Pathology, University of Cambridge, Tennis
Court Road, Cambridge CB2 1QR, United Kingdom and
The University
of Kansas Medical Center, Kansas City, Kansas 66160
-catenin protein in
vivo.
-Catenin is a central component of the Wnt signaling
pathway, which is of key importance in development as well as being
heavily implicated in a variety of human cancers. We show that the
CBP-mediated acetylation of
-catenin occurs at a single site, lysine
49. Importantly, this lysine is frequently found mutated in cancer and
is in a region of importance to the regulation of
-catenin. We show
that mutation of this site leads specifically to an increase in the ability of
-catenin to activate the c-myc gene but not
other
-catenin-regulated genes. This suggests that acetylation of
-catenin is involved in regulating Wnt signaling in a
promoter-specific fashion.
*
This work was supported in part by a grant from the Cancer
Research Campaign.The costs of publication of this
article were defrayed in part by the
payment of page charges. The article
must therefore be hereby marked
"advertisement" in
accordance with 18 U.S.C. Section
1734 solely to indicate this fact.

To whom correspondence should be addressed. Tel.:
44-1223-334111; Fax: 44-1223-334089; E-mail:
tk106@mole.bio.cam.ac.uk.
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