Linked Life Data

10733926

Source:http://linkedlifedata.com/resource/pubmed/id/10733926

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2000-5-4
pubmed:abstractText
The synthetic peptide comprising the 317-341 region of human influenza A virus (H1N1 subtype) hemagglutinin elicits peptide-specific antibody and helper T cell responses and confers protection against lethal virus infection. Molecular mapping of the 317-329 region, which encompasses the epitope recognized by peptide-specific T cells, revealed that the minimal size required for T cell activation was the 317-326 segment. The most likely peptide alignment, which placed 320Leu to pocket 1 of the I-E(d) peptide binding groove, was predicted by molecular mechanics calculations performed with the parental and with the Ala-substituted analogs. In line with the prediction data, the results of the peptide binding assay, where the relative binding efficiency to I-E(d) molecules expressed on the surface of antigen-presenting cells was monitored, identified the 320-326 core sequence interacting with the major histocompatibility class II peptide binding groove. Functional analysis of Ala-substituted variants by functional assays and by calculating the surface-accessible areas of the single peptidic amino acids in the I-E(d)-peptide complexes demonstrated that 324Pro is a primary contact residue for the T cell receptor. Our results show that this type of analysis offers a suitable tool for molecular mapping of helper T cell epitopes and thus provides valuable data for subunit vaccine design.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-291X
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Academic Press.
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
270
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
190-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Mapping of a protective helper T cell epitope of human influenza A virus hemagglutinin.
pubmed:affiliation
Department of Immunology, L. Eötvös University, Göd, Hungary.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't