Linked Life Data

20410442

Source:http://linkedlifedata.com/resource/pubmed/id/20410442

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2010-9-2
pubmed:abstractText
The propensity of the prion protein (PrP) to adopt different structures is a clue to its pathological behavior. The determination of the region involved in the PrP(C) to PrP(Sc) conversion is fundamental for the understanding of the mechanisms underlying this process at the molecular level. In this paper, the polymerization of the helical H2H3 domain of ovine PrP (OvPrP) was compared to the full-length construct (using chromatography and light scattering). We show that the oligomerization patterns are identical, although the H2H3 domain has a higher polymerization rate. Furthermore, the depolymerization kinetics of purified H2H3 oligomers compared to those purified from the full-length PrP reveal that regions outside H2H3 do not significantly contribute to the oligomerization process. By combining rational mutagenesis and molecular dynamics to investigate the early stages of H2H3 oligomerization, we observe a conformationally stable beta-sheet structure that we propose as a possible nucleus for oligomerization; we also show that single point mutations in H2 and H3 present structural polymorphisms and oligomerization properties that could constitute the basis of species or strain variability.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1530-6860
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3222-31
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
The oligomerization properties of prion protein are restricted to the H2H3 domain.
pubmed:affiliation
Institut National de la Recherche Agronomique, Virologie et Immunologie Moléculaires, INRA, F-78352 Jouy-en-Josas, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't