Lnpk^Ul

The ulnaless mouse has been characterized as a paracentric inversion with a centromeric breakpoint into the lunapark gene and a telomeric breakpoint 770 kb away. This inversion disrupts the lunapark gene and increases the distance between the neighboring HoxD cluster and a cluster of enhancer sequences controlling several distinct genes over a large region. Genes Evx2, Hoxd12 and Hoxd13 are all misexpressed in the limb buds and genital buds of the ulnaless mouse. The inverted DNA includes Evx2, the HoxD complex, Mtx2, as well as some pseudogenes. (J:83372)