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\26984374
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2016 ; 6
(ä): 23144
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
RepA-WH1, the agent of an amyloid proteinopathy in bacteria, builds oligomeric
pores through lipid vesicles
#MMPMID26984374
Fernández C
; Núñez-Ramírez R
; Jiménez M
; Rivas G
; Giraldo R
Sci Rep
2016[Mar]; 6
(ä): 23144
PMID26984374
show ga
RepA-WH1 is a disease-unrelated protein that recapitulates in bacteria key
aspects of human amyloid proteinopathies: i) It undergoes ligand-promoted
amyloidogenesis in vitro; ii) its aggregates are able to seed/template
amyloidosis on soluble protein molecules; iii) its conformation is modulated by
Hsp70 chaperones in vivo, generating transmissible amyloid strains; and iv)
causes proliferative senescence. Membrane disruption by amyloidogenic oligomers
has been found for most proteins causing human neurodegenerative diseases. Here
we report that, as for PrP prion and ?-synuclein, acidic phospholipids also
promote RepA-WH1 amyloidogenesis in vitro. RepA-WH1 molecules bind to liposomes,
where the protein assembles oligomeric membrane pores. Fluorescent tracer
molecules entrapped in the lumen of the vesicles leak through these pores and
RepA-WH1 can then form large aggregates on the surface of the vesicles without
inducing their lysis. These findings prove that it is feasible to generate in
vitro a synthetic proteinopathy with a minimal set of cytomimetic components and
support the view that cell membranes are primary targets in protein amyloidoses.