Human chromosome 17 comparative anchor loci are conserved on bovine chromosome 19.

Eight comparative anchor loci on human chromosome 17, TP53, CHRNB1, THRA1, CRYB1, NF1, MPO, MYL4, and P4HB, were mapped to bovine chromosome 19 using bovine x hamster and bovine x mouse hybrid somatic cell lines. This completes the synteny mapping of human chromosome 17 comparative anchor loci in cattle, all of which have been mapped to bovine chromosome 19 and mouse chromosome 11, with the exception of CSH1. It is likely that the suggested homologue of human CSH1, PL1 on cattle chromosome 23, is a not true homologue of the human gene. This study reveals the largest conserved synteny segment among human, cattle, and mouse autosomes described to date. While all of the genes mapped to cattle chromosome 19 are on human chromosome 17, genes on mouse chromosome 11 are distributed on 7 human chromosomes, supporting the hypothesis that there is greater conservation of synteny between human and bovine chromosomes than between human and mouse.