Faculty Research 1990 - 1999

Title

Minors held by majors: the H13 minor histocompatibility locus defined as a peptide/MHC class I complex.

Document Type

Article

Publication Date

1997

Keywords

Amino-Acid-Sequence, Amino-Acid-Substitution, Animal, Base-Sequence, Chromosome-Mapping, Cloning-Molecular, DNA-Complementary: ge, Epitope-Mapping, H-2-Antigens: im, Hybrid-Cells, Mice, Mice-Inbred-BALB-C, Minor-Histocompatibility-Antigens: ge, im, Minor-Histocompatibility-Loci, Molecular-Sequence-Data, Peptides: im, Polymorphism-(Genetics), SUPPORT-NON-U-S-GOVT, SUPPORT-U-S-GOVT-P-H-S, T-Lymphocytes-Cytotoxic: im

JAX Source

Immunity 1997 Oct;7(4):461-72

Abstract

The products of minor histocompatibility (H) loci are serious barriers to tissue transplantation even among major histocompatibility complex (MHC) identical individuals, frequently causing chronic graft rejection and graft versus host disease. Over 50 minor H loci map to mouse autosomal chromosomes but none are known at the molecular level. By expression cloning, we identified the H13 locus, a classical minor H locus first detected 30 years ago by the trait of graft rejection. The H13a allele is located on chromosome 2 and encodes a novel protein that yields the rare naturally processed nonapeptide SSVVGVWYL (SVL9) for presentation by the Db MHC class I molecule. The SVL9 peptide binds Db MHC despite the absence of the consensus binding motif, and a conservative methyl group substitution (Valine 4 <--> Isoleucine) explains why reciprocal T cell responses are elicited in H13a and H13b congenic strains.

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