The role of anchor residues in the binding of peptides to HLA‐A*1101 molecules
Identifieur interne : 003B15 ( Main/Exploration ); précédent : 003B14; suivant : 003B16The role of anchor residues in the binding of peptides to HLA‐A*1101 molecules
Auteurs : Y. Chujoh [Japon] ; Y. Sobao [Japon] ; K. Miwa [Japon] ; Y. Kaneko [Japon] ; M. Takiguchi [Japon]Source :
- Tissue Antigens [ 0001-2815 ] ; 1998-12.
Abstract
Abstract: The binding of 136 8‐ to 12‐mer peptides carrying anchor residues at position 2 (P2) and the C‐terminus to HLA‐A*1101 molecules was analyzed by a stabilization assay using RMA‐S transfectants expressing HLA‐A*1101 and human β2‐microglobulin. 72.1% of these peptides bound to HLA‐A*1101 molecules. Two known HLA‐All‐restricted cytotoxic T‐lymphocyte epitope peptides showed high affinity to HLA‐A*1101. The results confirmed a previous pool sequencing study of HLA‐A*1101 binding self‐peptides, which showed that Lys at the C‐terminus and Val, Ile, Phe, Tyr, and Thr at P2 are anchor residues for HLA‐A*1101. Thr and aliphatic hydrophobic residues Val, Ile, and Leu at P2 are stronger anchor residues than the aromatic hydro‐phobic residues Phe and Tyr. In addition, hydrophobic residues Leu, Phe, Tyr, Ile, and Ala at position 3 (P3) are secondary anchors but are weaker than those at P2. The affinities of the 8‐ and 12‐mer peptides were significantly lower than those of 9‐ to 11‐mer peptides. There was however no difference in affinity between 9‐, 10‐ and 11‐mer peptides. Furthermore, the analysis using peptides mutated at the C‐terminus showed that HLA‐A*1101 molecules can bind peptides carrying another positively charged residue, Arg. The present study clarified the role of the anchor residues at P2, P3 and the C‐terminus in the binding of HLA‐A*1101 molecules.
Url:
DOI: 10.1111/j.1399-0039.1998.tb03080.x
Affiliations:
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Kaneko</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Ajinomoto Pharmaceutical Research Laboratories, 1‐1 Suzuki‐cho, Kawasaki‐ku, Kanagawa</wicri:regionArea><wicri:noRegion>Kanagawa</wicri:noRegion></affiliation></author><author><name sortKey="Takiguchi, M" sort="Takiguchi, M" uniqKey="Takiguchi M" first="M." last="Takiguchi">M. Takiguchi</name><affiliation wicri:level="4"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Tumor Biology, Institute of Medical Science, University of Tokyo, 4–6‐1 Shirokanedai, Minato‐ku, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName><orgName type="university">Université de Tokyo</orgName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Division of Viral Immunology, Center for AIDS Research, Kumamoto University, 4–24‐1 Kuhonji, Kumamoto</wicri:regionArea><wicri:noRegion>Kumamoto</wicri:noRegion></affiliation><affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Tissue Antigens</title><title level="j" type="alt">TISSUE ANTIGENS</title><idno type="ISSN">0001-2815</idno><idno type="eISSN">1399-0039</idno><imprint><biblScope unit="vol">52</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="501">501</biblScope><biblScope unit="page" to="509">509</biblScope><biblScope unit="page-count">9</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1998-12">1998-12</date></imprint><idno type="ISSN">0001-2815</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0001-2815</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The binding of 136 8‐ to 12‐mer peptides carrying anchor residues at position 2 (P2) and the C‐terminus to HLA‐A*1101 molecules was analyzed by a stabilization assay using RMA‐S transfectants expressing HLA‐A*1101 and human β2‐microglobulin. 72.1% of these peptides bound to HLA‐A*1101 molecules. Two known HLA‐All‐restricted cytotoxic T‐lymphocyte epitope peptides showed high affinity to HLA‐A*1101. The results confirmed a previous pool sequencing study of HLA‐A*1101 binding self‐peptides, which showed that Lys at the C‐terminus and Val, Ile, Phe, Tyr, and Thr at P2 are anchor residues for HLA‐A*1101. Thr and aliphatic hydrophobic residues Val, Ile, and Leu at P2 are stronger anchor residues than the aromatic hydro‐phobic residues Phe and Tyr. In addition, hydrophobic residues Leu, Phe, Tyr, Ile, and Ala at position 3 (P3) are secondary anchors but are weaker than those at P2. The affinities of the 8‐ and 12‐mer peptides were significantly lower than those of 9‐ to 11‐mer peptides. There was however no difference in affinity between 9‐, 10‐ and 11‐mer peptides. Furthermore, the analysis using peptides mutated at the C‐terminus showed that HLA‐A*1101 molecules can bind peptides carrying another positively charged residue, Arg. The present study clarified the role of the anchor residues at P2, P3 and the C‐terminus in the binding of HLA‐A*1101 molecules.</div></front></TEI><affiliations><list><country><li>Japon</li></country><region><li>Région de Kantō</li></region><settlement><li>Tokyo</li></settlement><orgName><li>Université de Tokyo</li></orgName></list><tree><country name="Japon"><region name="Région de Kantō"><name sortKey="Chujoh, Y" sort="Chujoh, Y" uniqKey="Chujoh Y" first="Y." last="Chujoh">Y. Chujoh</name></region><name sortKey="Chujoh, Y" sort="Chujoh, Y" uniqKey="Chujoh Y" first="Y." last="Chujoh">Y. Chujoh</name><name sortKey="Kaneko, Y" sort="Kaneko, Y" uniqKey="Kaneko Y" first="Y." last="Kaneko">Y. Kaneko</name><name sortKey="Miwa, K" sort="Miwa, K" uniqKey="Miwa K" first="K." last="Miwa">K. Miwa</name><name sortKey="Sobao, Y" sort="Sobao, Y" uniqKey="Sobao Y" first="Y." last="Sobao">Y. Sobao</name><name sortKey="Takiguchi, M" sort="Takiguchi, M" uniqKey="Takiguchi M" first="M." last="Takiguchi">M. Takiguchi</name><name sortKey="Takiguchi, M" sort="Takiguchi, M" uniqKey="Takiguchi M" first="M." last="Takiguchi">M. Takiguchi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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