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2015 ; 43
(W1
): W331-7
Nephropedia Template TP
gab.com Text
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English Wikipedia
PrionW: a server to identify proteins containing glutamine/asparagine rich
prion-like domains and their amyloid cores
#MMPMID25977297
Zambrano R
; Conchillo-Sole O
; Iglesias V
; Illa R
; Rousseau F
; Schymkowitz J
; Sabate R
; Daura X
; Ventura S
Nucleic Acids Res
2015[Jul]; 43
(W1
): W331-7
PMID25977297
show ga
Prions are a particular type of amyloids with the ability to self-perpetuate and
propagate in vivo. Prion-like conversion underlies important biological processes
but is also connected to human disease. Yeast prions are the best understood
transmissible amyloids. In these proteins, prion formation from an initially
soluble state involves a structural conversion, driven, in many cases, by
specific domains enriched in glutamine/asparagine (Q/N) residues. Importantly,
domains sharing this compositional bias are also present in the proteomes of
higher organisms, thus suggesting that prion-like conversion might be an
evolutionary conserved mechanism. We have recently shown that the identification
and evaluation of the potency of amyloid nucleating sequences in putative prion
domains allows discrimination of genuine prions. PrionW is a web application that
exploits this principle to scan sequences in order to identify proteins
containing Q/N enriched prion-like domains (PrLDs) in large datasets. When used
to scan the complete yeast proteome, PrionW identifies previously experimentally
validated prions with high accuracy. Users can analyze up to 10 000 sequences at
a time, PrLD-containing proteins are identified and their putative PrLDs and
amyloid nucleating cores visualized and scored. The output files can be
downloaded for further analysis. PrionW server can be accessed at
http://bioinf.uab.cat/prionw/.