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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Cell+Biol
2017 ; 216
(1
): 265-277
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The palmitoyltransferase Approximated promotes growth via the Hippo pathway by
palmitoylation of Fat
#MMPMID28031421
Matakatsu H
; Blair SS
; Fehon RG
J Cell Biol
2017[Jan]; 216
(1
): 265-277
PMID28031421
show ga
The large protocadherin Fat functions to promote Hippo pathway activity in
restricting tissue growth. Loss of Fat leads to accumulation of the atypical
myosin Dachs at the apical junctional region, which in turn promotes growth by
inhibiting Warts. We previously identified Approximated (App), a DHHC domain
palmitoyltransferase, as a negative regulator of Fat signaling in growth control.
We show here that App promotes growth by palmitoylating the intracellular domain
of Fat, and that palmitoylation negatively regulates Fat function. Independently,
App also recruits Dachs to the apical junctional region through protein-protein
association, thereby stimulating Dachs's activity in promoting growth. Further,
we show that palmitoylation by App functions antagonistically to phosphorylation
by Discs-overgrown, which activates Fat. Together, these findings suggest a model
in which App promotes Dachs activity by simultaneously repressing Fat via
posttranslational modification and recruiting Dachs to the apical junctional
region, thereby promoting tissue growth.