Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 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\27570072.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Cell 2016 ; 63 (5): 768-80 Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Polyphosphate: A Conserved Modifier of Amyloidogenic Processes #MMPMID27570072
Cremers CM; Knoefler D; Gates S; Martin N; Dahl JU; Lempart J; Xie L; Chapman MR; Galvan V; Southworth DR; Jakob U
Mol Cell 2016[Sep]; 63 (5): 768-80 PMID27570072show ga
Polyphosphate (polyP), a several billion year old biopolymer, is produced in every cell, tissue, and organism studied. Structurally extremely simple, polyP consists of long chains of covalently linked inorganic phosphate groups. We report here the surprising discovery that polyP shows a remarkable efficacy in accelerating amyloid fibril formation. We found that polyP serves as an effective nucleation source for various different amyloid proteins, ranging from bacterial CsgA to human ?-Synuclein, A?1-40/42 and Tau. PolyP-associated ?-Synuclein fibrils show distinct differences in seeding behavior, morphology and fibril stability compared to fibrils formed in the absence of polyP. In vivo, the amyloid-stimulating and fibril-stabilizing effects of polyP have wide-reaching consequences, increasing the rate of biofilm formation in pathogenic bacteria and mitigating amyloid toxicity in differentiated neuroblastoma cells and C. elegans strains that serve as models for human folding diseases. These results suggest that we have discovered a conserved cytoprotective modifier of amyloidogenic processes.