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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 Nat+Commun
2016 ; 7
(ä): 12629
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Super-resolution microscopy reveals a preformed NEMO lattice structure that is
collapsed in incontinentia pigmenti
#MMPMID27586688
Scholefield J
; Henriques R
; Savulescu AF
; Fontan E
; Boucharlat A
; Laplantine E
; Smahi A
; Israël A
; Agou F
; Mhlanga MM
Nat Commun
2016[Sep]; 7
(ä): 12629
PMID27586688
show ga
The NF-?B pathway has critical roles in cancer, immunity and inflammatory
responses. Understanding the mechanism(s) by which mutations in genes involved in
the pathway cause disease has provided valuable insight into its regulation, yet
many aspects remain unexplained. Several lines of evidence have led to the
hypothesis that the regulatory/sensor protein NEMO acts as a biological binary
switch. This hypothesis depends on the formation of a higher-order structure,
which has yet to be identified using traditional molecular techniques. Here we
use super-resolution microscopy to reveal the existence of higher-order NEMO
lattice structures dependent on the presence of polyubiquitin chains before NF-?B
activation. Such structures may permit proximity-based trans-autophosphorylation,
leading to cooperative activation of the signalling cascade. We further show that
NF-?B activation results in modification of these structures. Finally, we
demonstrate that these structures are abrogated in cells derived from
incontinentia pigmenti patients.
|Cell Line, Tumor
[MESH]
|Enzyme Activation
[MESH]
|Humans
[MESH]
|I-kappa B Kinase/metabolism/physiology/*ultrastructure
[MESH]