Linked Life Data

19883942

Source:http://linkedlifedata.com/resource/pubmed/id/19883942

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-11-25
pubmed:abstractText
Both human (h) and chicken (Ch) prion proteins (PrP) bind copper ions within the so called "tandem repeat" N-terminal region. Outside this region, hPrP possesses two additional copper binding sites, localized at His-96 and His-111 in the so called "amylodogenic" or neurotoxic region (residues 91-126). Also ChPrP possesses a similar region (ChPrP(105-140)) containing two His (His-110 and His-124) and an identical hydrophobic tail of 15 amino acids rich in Ala and Gly. The copper binding abilities within such region of ChPrP were investigated by NMR, CD and potentiometry using Ni(2+) as diamagnetic probe. The formation of diamagnetic metal complexes allowed to monitor the chemical shift and signal intensity variations and to determine the structural and kinetic features of the His-110 and His-124 metal binding sites. Finally a comparison between the hPrP and ChPrP metal binding abilities was performed. We found that the two prion proteins exhibited different copper and nickel preferences with the favoured metal binding sites localized at opposite His: His-110 for ChPrP, and His-111 for hPrP.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1873-3344
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
104
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
71-8
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Copper binding to chicken and human prion protein amylodogenic regions: differences and similarities revealed by Ni2+ as a diamagnetic probe.
pubmed:affiliation
Department of Chemistry, University of Siena, Via Aldo Moro 53-100 Siena, Italy. valensindan@unisi.it
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't