Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25762334
&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 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 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\25762334
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biophys+J
2015 ; 108
(5
): 1229-37
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Intramembrane proteolysis of ?-amyloid precursor protein by ?-secretase is an
unusually slow process
#MMPMID25762334
Kamp F
; Winkler E
; Trambauer J
; Ebke A
; Fluhrer R
; Steiner H
Biophys J
2015[Mar]; 108
(5
): 1229-37
PMID25762334
show ga
Intramembrane proteolysis has emerged as a key mechanism required for membrane
proteostasis and cellular signaling. One of the intramembrane-cleaving proteases
(I-CLiPs), ?-secretase, is also intimately implicated in Alzheimer's disease, a
major neurodegenerative disease and leading cause of dementia. High-resolution
crystal structural analyses have revealed that I-CLiPs harbor their active sites
buried deeply in the membrane bilayer. Surprisingly, however, the key kinetic
constants of these proteases, turnover number kcat and catalytic efficiency
kcat/KM, are largely unknown. By investigating the kinetics of intramembrane
cleavage of the Alzheimer's disease-associated ?-amyloid precursor protein in
vitro and in human embryonic kidney cells, we show that ?-secretase is a very
slow protease with a kcat value similar to those determined recently for
rhomboid-type I-CLiPs. Our results indicate that low turnover numbers may be a
general feature of I-CLiPs.
|*Proteolysis
[MESH]
|Amyloid Precursor Protein Secretases/*metabolism
[MESH]