Specificity and degeneracy in peptide binding to HLA-B7-like class I molecules.
Identifieur interne : 003E10 ( Main/Exploration ); précédent : 003E09; suivant : 003E11Specificity and degeneracy in peptide binding to HLA-B7-like class I molecules.
Auteurs : J. Sidney [États-Unis] ; S. Southwood ; M F Del Guercio ; H M Grey ; R W Chesnut ; R T Kubo ; A. SetteSource :
- Journal of immunology (Baltimore, Md. : 1950) [ 0022-1767 ] ; 1996.
Descripteurs français
- KwdFr :
- Allèles, Antigène HLA-B7 (), Antigène HLA-B7 (génétique), Antigène HLA-B7 (métabolisme), Antigènes HLA-B (), Antigènes HLA-B (génétique), Antigènes HLA-B (métabolisme), Données de séquences moléculaires, Humains, Ingénierie des protéines, Liaison aux protéines, Ligands, Oligopeptides (), Oligopeptides (métabolisme), Sites de fixation (génétique), Séquence d'acides aminés, Techniques in vitro.
- MESH :
- génétique : Antigène HLA-B7, Antigènes HLA-B, Sites de fixation.
- métabolisme : Antigène HLA-B7, Antigènes HLA-B, Oligopeptides.
- Allèles, Antigène HLA-B7, Antigènes HLA-B, Données de séquences moléculaires, Humains, Ingénierie des protéines, Liaison aux protéines, Ligands, Oligopeptides, Séquence d'acides aminés, Techniques in vitro.
English descriptors
- KwdEn :
- Alleles, Amino Acid Sequence, Binding Sites (genetics), HLA-B Antigens (chemistry), HLA-B Antigens (genetics), HLA-B Antigens (metabolism), HLA-B7 Antigen (chemistry), HLA-B7 Antigen (genetics), HLA-B7 Antigen (metabolism), Humans, In Vitro Techniques, Ligands, Molecular Sequence Data, Oligopeptides (chemistry), Oligopeptides (metabolism), Protein Binding, Protein Engineering.
- MESH :
- chemical , chemistry : HLA-B Antigens, HLA-B7 Antigen, Oligopeptides.
- genetics : Binding Sites, HLA-B Antigens, HLA-B7 Antigen.
- chemical , metabolism : HLA-B Antigens, HLA-B7 Antigen, Oligopeptides.
- Alleles, Amino Acid Sequence, Humans, In Vitro Techniques, Ligands, Molecular Sequence Data, Protein Binding, Protein Engineering.
Abstract
The HLA-B7-like binding supertype includes several different HLA-B molecules. Herein, the primary and secondary anchor specificities of the five most common HLA-B7-like molecules (B*0702, B*3501, B51, B*5301, and B*5401) were defined by the use of molecular binding assays, analogue peptides, and large sets of peptides corresponding to naturally occurring sequences. All five B7-like molecules analyzed preferentially bound 9-mers, with a stringent requirement for proline in position 2, while a variety of hydrophobic or aromatic residues were well tolerated at the C-terminal anchor position. Although most peptides bound in an allele-specific fashion, approximately 20% of the binders identified were degenerate and bound at least three of the five B7-like molecules analyzed with affinities of 500 nM or less. It was also noted that, in general, peptides that bind with high affinity to any given one B7-like molecule were also most frequently capable of degenerate binding. Prominent roles for secondary anchors in positions 1 and 3 were observed for most B7-like molecules, and secondary anchor motifs were utilized to derive an HLA-B7-like supermotif. The validity of this B7-like supermotif was tested by a blind prediction set. Finally, the B7-like supermotif was utilized to derive a general strategy for rationally engineering peptide analogues of naturally occurring sequences with greatly increased binding affinity and degeneracy. Such engineered supermotif binding peptides may be of significant utility in the development of peptide-based vaccines against chronic viral diseases and cancer.
PubMed: 8871647
Affiliations:
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Sidney</name><affiliation wicri:level="2"><nlm:affiliation>Cytel Corporation, San Diego, CA 92121, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Cytel Corporation, San Diego, CA 92121</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Southwood, S" sort="Southwood, S" uniqKey="Southwood S" first="S" last="Southwood">S. Southwood</name></author><author><name sortKey="Del Guercio, M F" sort="Del Guercio, M F" uniqKey="Del Guercio M" first="M F" last="Del Guercio">M F Del Guercio</name></author><author><name sortKey="Grey, H M" sort="Grey, H M" uniqKey="Grey H" first="H M" last="Grey">H M Grey</name></author><author><name sortKey="Chesnut, R W" sort="Chesnut, R W" uniqKey="Chesnut R" first="R W" last="Chesnut">R W Chesnut</name></author><author><name sortKey="Kubo, R T" sort="Kubo, R T" uniqKey="Kubo R" first="R T" last="Kubo">R T Kubo</name></author><author><name sortKey="Sette, A" sort="Sette, A" uniqKey="Sette A" first="A" last="Sette">A. Sette</name></author></analytic><series><title level="j">Journal of immunology (Baltimore, Md. : 1950)</title><idno type="ISSN">0022-1767</idno><imprint><date when="1996" type="published">1996</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alleles</term><term>Amino Acid Sequence</term><term>Binding Sites (genetics)</term><term>HLA-B Antigens (chemistry)</term><term>HLA-B Antigens (genetics)</term><term>HLA-B Antigens (metabolism)</term><term>HLA-B7 Antigen (chemistry)</term><term>HLA-B7 Antigen (genetics)</term><term>HLA-B7 Antigen (metabolism)</term><term>Humans</term><term>In Vitro Techniques</term><term>Ligands</term><term>Molecular Sequence Data</term><term>Oligopeptides (chemistry)</term><term>Oligopeptides (metabolism)</term><term>Protein Binding</term><term>Protein Engineering</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Allèles</term><term>Antigène HLA-B7 ()</term><term>Antigène HLA-B7 (génétique)</term><term>Antigène HLA-B7 (métabolisme)</term><term>Antigènes HLA-B ()</term><term>Antigènes HLA-B (génétique)</term><term>Antigènes HLA-B (métabolisme)</term><term>Données de séquences moléculaires</term><term>Humains</term><term>Ingénierie des protéines</term><term>Liaison aux protéines</term><term>Ligands</term><term>Oligopeptides ()</term><term>Oligopeptides (métabolisme)</term><term>Sites de fixation (génétique)</term><term>Séquence d'acides aminés</term><term>Techniques in vitro</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>HLA-B Antigens</term><term>HLA-B7 Antigen</term><term>Oligopeptides</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Binding Sites</term><term>HLA-B Antigens</term><term>HLA-B7 Antigen</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Antigène HLA-B7</term><term>Antigènes HLA-B</term><term>Sites de fixation</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>HLA-B Antigens</term><term>HLA-B7 Antigen</term><term>Oligopeptides</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Antigène HLA-B7</term><term>Antigènes HLA-B</term><term>Oligopeptides</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Alleles</term><term>Amino Acid Sequence</term><term>Humans</term><term>In Vitro Techniques</term><term>Ligands</term><term>Molecular Sequence Data</term><term>Protein Binding</term><term>Protein Engineering</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Allèles</term><term>Antigène HLA-B7</term><term>Antigènes HLA-B</term><term>Données de séquences moléculaires</term><term>Humains</term><term>Ingénierie des protéines</term><term>Liaison aux protéines</term><term>Ligands</term><term>Oligopeptides</term><term>Séquence d'acides aminés</term><term>Techniques in vitro</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The HLA-B7-like binding supertype includes several different HLA-B molecules. Herein, the primary and secondary anchor specificities of the five most common HLA-B7-like molecules (B*0702, B*3501, B51, B*5301, and B*5401) were defined by the use of molecular binding assays, analogue peptides, and large sets of peptides corresponding to naturally occurring sequences. All five B7-like molecules analyzed preferentially bound 9-mers, with a stringent requirement for proline in position 2, while a variety of hydrophobic or aromatic residues were well tolerated at the C-terminal anchor position. Although most peptides bound in an allele-specific fashion, approximately 20% of the binders identified were degenerate and bound at least three of the five B7-like molecules analyzed with affinities of 500 nM or less. It was also noted that, in general, peptides that bind with high affinity to any given one B7-like molecule were also most frequently capable of degenerate binding. Prominent roles for secondary anchors in positions 1 and 3 were observed for most B7-like molecules, and secondary anchor motifs were utilized to derive an HLA-B7-like supermotif. The validity of this B7-like supermotif was tested by a blind prediction set. Finally, the B7-like supermotif was utilized to derive a general strategy for rationally engineering peptide analogues of naturally occurring sequences with greatly increased binding affinity and degeneracy. Such engineered supermotif binding peptides may be of significant utility in the development of peptide-based vaccines against chronic viral diseases and cancer.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region></list><tree><noCountry><name sortKey="Chesnut, R W" sort="Chesnut, R W" uniqKey="Chesnut R" first="R W" last="Chesnut">R W Chesnut</name><name sortKey="Del Guercio, M F" sort="Del Guercio, M F" uniqKey="Del Guercio M" first="M F" last="Del Guercio">M F Del Guercio</name><name sortKey="Grey, H M" sort="Grey, H M" uniqKey="Grey H" first="H M" last="Grey">H M Grey</name><name sortKey="Kubo, R T" sort="Kubo, R T" uniqKey="Kubo R" first="R T" last="Kubo">R T Kubo</name><name sortKey="Sette, A" sort="Sette, A" uniqKey="Sette A" first="A" last="Sette">A. Sette</name><name sortKey="Southwood, S" sort="Southwood, S" uniqKey="Southwood S" first="S" last="Southwood">S. Southwood</name></noCountry><country name="États-Unis"><region name="Californie"><name sortKey="Sidney, J" sort="Sidney, J" uniqKey="Sidney J" first="J" last="Sidney">J. Sidney</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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