title: Molecular analysis of the DLA DR region.
abstract: The dog is an important model for studying organ transplantation. In order to develop a DNA-based typing system, a genomic analysis of the canine DR region of the MHC was undertaken. Southern analysis suggests the presence of two DRB genes in most dogs and all have one DRA gene. One dog out of 200 examined contains only one DRB gene. The DRA gene was mapped in one lambda phage clone. One DRB gene (DRBB1) was localized to two overlapping phage clones. Another DRB gene (DRBB2) was localized to two overlapping phage clones. Sequence analysis of the two DRB genes suggests that one gene is intact (DRBB1) and one gene is a pseudogene (DRBB2) because it lacks a splice acceptor signal for exon 3 and lacks exons 2 and exon 4. Intron 1 and 2 sequence data from DRBB1 allow amplification of the polymorphic exon 2 which, in turn, can serve as a basis for developing a typing system for DRB.
authors.affiliation: Transplantation Biology Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Wagner
authors.forename: R C
authors.initials: RC
authors.lastname: Burnett
authors.forename: R
authors.initials: R
authors.lastname: Storb
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D018076:DNA, Complementary / Q000032:analysis / Q000235:genetics; D004285:Dogs; D005802:Genes, MHC Class II; D015698:Genomic Library; D008969:Molecular Sequence Data; D015183:Restriction Mapping; D016415:Sequence Alignment
chemical_list: D018076:DNA, Complementary