Faculty Research 1990 - 1999

Title

A genetic linkage map of mouse chromosome 2 extending from thrombospondin to paired box gene 1, including the H3 minor histocompatibility complex.

Document Type

Article

Publication Date

1996

Keywords

Base-Sequence, Chromosome-Mapping, Comparative-Study, DNA-Primers, DNA-Binding-Proteins: ge, Genetic-Markers, Human, Linkage-(Genetics), Membrane-Glycoproteins: ge, Mice, Minor-Histocompatibility-Loci: ge, Molecular-Sequence-Data, Polymorphism-Restriction-Fragment-Length, Sequence-Deletion, SUPPORT-U-S-GOVT-NON-P-H-S, SUPPORT-U-S-GOVT-P-H-S, Transcription-Factors: ge

JAX Source

Genomics 1996 Apr 1;33(1):75-84

Grant

DK07449/DK/NIDDK, R01AI28802/AI/NIAID, R01AI24544/AI/NIAID

Abstract

The classical minor histocompatibility 3 (H3) locus was originally defined by the phenotype of skin graft rejection, which is a complex genetic trait. H3 is now known to be a gene complex comprised of a minimum of two functionally interdependent alloantigen-encoding loci, H3a and H3b. H3a encodes a peptide recognized by cytotoxic T cells, and H3b encodes a peptide that stimulates helper T cells. The H3 complex also contains the beta2-microglobulin gene (B2m), and polymorphisms in B2m contribute to the tissue rejection phenotype. We describe a high-density genetic linkage map of a 16-cM region of mouse Chromosome 2 from thrombospondin (Thbs1) to paired box gene 1 (Pax1). This genetic map includes H3a, H3b, and B2m. Other genes and anonymous loci have also been placed on the map. H3a maps between D2Mit444 and B2m in close vicinity to several known genes. H3b maps 12 cM distal to H3a, and the proprotein convertase subtilisin/kexin type 2 gene (Pcsk2; formerly Nec2) cosegregates with H3b in a high-resolution backcross panel. The H3 complex spans a region that shows conserved synteny to human chromosomes 15q, 2q, and 20p.

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