A porcine 2-kb partial dipeptidylpeptidase IV (DPP4, EC 3.4.14.5) cDNA
clone and a porcine 16-kb genomic fragment containing parts of the DP
P4 gene were isolated, characterized, and used as probes to map the DP
P4 gene to pig Chr (Chr) 15q21 by fluorescence in situ hybridization.
A two-allele RFLP was revealed for the DPP4 gene. This polymorphism wa
s utilized in a linkage test against the erythrocyte antigen G (EAG),
previously assigned to Chr 15, and the microsatellite S0088, which is
linked to EAG. The linkage analyses revealed significant evidence for
linkage confirming the assignment of DPP4 to Chr 15.