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The Rat cim Effect: TAP Allele-Dependent Changes in a Class I MHC Anchor Motif and Evidence Against C-Terminal Trimming of Peptides in the ER

Identifieur interne : 003F22 ( Main/Exploration ); précédent : 003F21; suivant : 003F23

The Rat cim Effect: TAP Allele-Dependent Changes in a Class I MHC Anchor Motif and Evidence Against C-Terminal Trimming of Peptides in the ER

Auteurs : Simon J. Powis [Royaume-Uni] ; Lesley L. Young [Royaume-Uni] ; Etienne Joly [Royaume-Uni] ; Patrick J. Barker [Royaume-Uni] ; Louise Richardson [Royaume-Uni] ; Remco P. Brandt [Pays-Bas] ; Cornelis J. Melief [Pays-Bas] ; Jonathan C. Howard [Royaume-Uni, Allemagne] ; Geoffrey W. Butcher [Royaume-Uni]

Source :

RBID : ISTEX:0196865F642CFDB2B72296B1999F7C8EB451E180

English descriptors

Abstract

Abstract: Functional polymorphism in the rat peptide transporter associated with antigen processing (TAP) changes the peptide pool available for binding and presentation by a class I MHC allele, RT1.Aa. The peptide binding motif for RT1.Aa, determined by stabilization with synthetic peptides, included a strong preference for arginine at the peptide C terminus. Analysis of natural peptides bound to RT1.Aa by both pool sequencing and anhydrotrypsin chromatography revealed that TAP polymorphism determined the presence or absence of arginine as the peptide C-terminal residue. This result highlights the in vivo impact of TAP–peptide selectivity, and provides evidence against a high rate of generation of new C termini by protease activity in the endoplasmic reticulum.

Url:
DOI: 10.1016/S1074-7613(00)80680-9


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<div type="abstract" xml:lang="en">Abstract: Functional polymorphism in the rat peptide transporter associated with antigen processing (TAP) changes the peptide pool available for binding and presentation by a class I MHC allele, RT1.Aa. The peptide binding motif for RT1.Aa, determined by stabilization with synthetic peptides, included a strong preference for arginine at the peptide C terminus. Analysis of natural peptides bound to RT1.Aa by both pool sequencing and anhydrotrypsin chromatography revealed that TAP polymorphism determined the presence or absence of arginine as the peptide C-terminal residue. This result highlights the in vivo impact of TAP–peptide selectivity, and provides evidence against a high rate of generation of new C termini by protease activity in the endoplasmic reticulum.</div>
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