Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25428989
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25428989
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Biol+Cell
2015 ; 26
(3
): 569-82
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
PAS kinase is activated by direct SNF1-dependent phosphorylation and mediates
inhibition of TORC1 through the phosphorylation and activation of Pbp1
#MMPMID25428989
DeMille D
; Badal BD
; Evans JB
; Mathis AD
; Anderson JF
; Grose JH
Mol Biol Cell
2015[Feb]; 26
(3
): 569-82
PMID25428989
show ga
We describe the interplay between three sensory protein kinases in yeast:
AMP-regulated kinase (AMPK, or SNF1 in yeast), PAS kinase 1 (Psk1 in yeast), and
the target of rapamycin complex 1 (TORC1). This signaling cascade occurs through
the SNF1-dependent phosphorylation and activation of Psk1, which phosphorylates
and activates poly(A)- binding protein binding protein 1 (Pbp1), which then
inhibits TORC1 through sequestration at stress granules. The SNF1-dependent
phosphorylation of Psk1 appears to be direct, in that Snf1 is necessary and
sufficient for Psk1 activation by alternate carbon sources, is required for
altered Psk1 protein mobility, is able to phosphorylate Psk1 in vitro, and binds
Psk1 via its substrate-targeting subunit Gal83. Evidence for the direct
phosphorylation and activation of Pbp1 by Psk1 is also provided by in vitro and
in vivo kinase assays, including the reduction of Pbp1 localization at distinct
cytoplasmic foci and subsequent rescue of TORC1 inhibition in PAS
kinase-deficient yeast. In support of this signaling cascade, Snf1-deficient
cells display increased TORC1 activity, whereas cells containing hyperactive Snf1
display a PAS kinase-dependent decrease in TORC1 activity. This interplay between
yeast SNF1, Psk1, and TORC1 allows for proper glucose allocation during nutrient
depletion, reducing cell growth and proliferation when energy is low.