Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1996-8-5
pubmed:abstractText
Three peptides derived from platelet receptor glycoprotein alphaIIbBeta3 (GPIIb/IIIa) have been identified recently as fibrinogen-binding sequences: GPIIb 300-314 and 656-667 and GPIIIa 211-223. NMR spectroscopy has been used here to investigate the interactions of these peptides with parent fibrinogen. Based on resonance broadening and chemical-shift changes of peptides in the presence and absence of fibrinogen, interactions in the fast ligand-exchange regime are apparent and interfacial residues can be proposed. Positively charged arginines and histidines, along with several hydrophobic residues, are implicated as being crucial to the binding process. Transferred nuclear Overhauser effects and distance geometry calculations allow discussion of probable conformations in peptide-'bound' states. These identifications are consistent with other biological/chemical data and provide the basis for further studies aimed at understanding fibrinogen-mediated platelet aggregation on the molecular level.
pubmed:commentsCorrections
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pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0264-6021
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
315 ( Pt 1)
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
161-70
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Interactions of integrin GPIIb/IIIa-derived peptides with fibrinogen investigated by NMR spectroscopy.
pubmed:affiliation
Department of Biochemistry, Biomedical Engineering Center, University of Minnesota, Minneapolis, MN 55455, U.S.A.
pubmed:publicationType
Journal Article