Mapping of the SLA complex class III region by pulsed field gel electrophoresis

✍ Scribed by L. Wu; M. F. Rothschild; C. M. Warner

• Publisher: Springer-Verlag
• Year: 1995
• Tongue: English
• Weight: 497 KB
• Volume: 6
• Category: Article
• ISSN: 0938-8990
• DOI: 10.1007/bf00352366

✦ Synopsis

The fine order of genes in the class III region of the swine major histocompatibility complex (MHC), the SLA complex, was examined by pulsed field gel electrophoresis (PFGE) and Southern blot analysis. Four genes, C2, HSP70, TNFc~, and CYP21, were analyzed. The CYP27, C2, and HSP70 genes were all located within a 200-kb NotI fragment. The C2, HSP70, and TNFe~ genes cohybridized to a 420-kb SaII fragment. The TNFc~ gene is linked to the class I region by a 390-kb NotI fragment. Combined with a previous study from our lab, the order of genes in the SLA complex is class II-class III [(CYP21/C4)-(Bf/C2/HSPTO)-TNF~]-class I. The size of the class III region from CYP21 to TNFc~ is estimated to be 500 kb. This size and the order of the genes in the swine class III region are similar to those of human, mouse, goat, and rabbit, which confirms the high conservation of class III gene organization across species.