Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 286.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 286.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 286.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 286.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 286.79999999999995 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\26797131
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biol+Chem
2016 ; 291
(12
): 6169-81
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Nuclear Speckle-related Protein 70 Binds to Serine/Arginine-rich Splicing Factors
1 and 2 via an Arginine/Serine-like Region and Counteracts Their Alternative
Splicing Activity
#MMPMID26797131
Kim CH
; Kim YD
; Choi EK
; Kim HR
; Na BR
; Im SH
; Jun CD
J Biol Chem
2016[Mar]; 291
(12
): 6169-81
PMID26797131
show ga
Nuclear speckles are subnuclear storage sites containing pre-mRNA splicing
machinery. Proteins assembled in nuclear speckles are known to modulate
transcription and pre-mRNA processing. We have previously identified nuclear
speckle-related protein 70 (NSrp70) as a novel serine/arginine (SR)-related
protein that co-localizes with classical SR proteins such as serine/arginine-rich
splicing factor 1 (SRSF1 or ASF/SF2) and SRSF2 (SC35). NSrp70 mediates
alternative splice site selection, targeting several pre-mRNAs, including CD44
exon v5. Here we demonstrated that NSrp70 interacts physically with two SR
proteins, SRSF1 and SRSF2, and reverses their splicing activity in terms of CD44
exon v5 as exon exclusion. The NSrp70 RS-like region was subdivided into three
areas. Deletion of the first arginine/serine-rich-like region (RS1) completely
abrogated binding to the SR proteins and to target mRNA and also failed to induce
splicing of CD44 exon v5, suggesting that RS1 is critical for NSrp70 functioning.
Interestingly, RS1 deletion also resulted in the loss of NSrp70 and SR protein
speckle positioning, implying a potential scaffolding role for NSrp70 in nuclear
speckles. NSrp70 contains an N-terminal coiled-coil domain that is critical not
only for self-oligomerization but also for splicing activity. Consistently,
deletion of the coiled-coil domain resulted in indefinite formation of nuclear
speckles. Collectively, these results demonstrate that NSrp70 acts as a new
molecular counterpart for alternative splicing of target RNA, counteracting SRSF1
and SRSF2 splicing activity.