Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28397834
&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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28397834
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2017 ; 7
(ä): 46370
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
SnoN Stabilizes the SMAD3/SMAD4 Protein Complex
#MMPMID28397834
Walldén K
; Nyman T
; Hällberg BM
Sci Rep
2017[Apr]; 7
(ä): 46370
PMID28397834
show ga
TGF-? signaling regulates cellular processes such as proliferation,
differentiation and apoptosis through activation of SMAD transcription factors
that are in turn modulated by members of the Ski-SnoN family. In this process,
Ski has been shown to negatively modulate TGF-? signaling by disrupting active
R-SMAD/Co-SMAD heteromers. Here, we show that the related regulator SnoN forms a
stable complex with the R-SMAD (SMAD3) and the Co-SMAD (SMAD4). To rationalize
this stabilization at the molecular level, we determined the crystal structure of
a complex between the SAND domain of SnoN and the MH2-domain of SMAD4. This
structure shows a binding mode that is compatible with simultaneous coordination
of R-SMADs. Our results show that SnoN, and SMAD heteromers can form a joint
structural core for the binding of other transcription modulators. The results
are of fundamental importance for our understanding of the molecular mechanisms
behind the modulation of TGF-? signaling.
|Humans
[MESH]
|Intracellular Signaling Peptides and Proteins/*metabolism
[MESH]