A mouse Plin cDNA that had serine-to-alanine mutations made in all 6 protein kinase A phosphorylation sites using recombinant adenoviruses (Muta-Gene Phagemid in vitro mutagenesis kit (Bio-Rad)). The cDNA was FLAG-tagged at the carboxy terminus via PCR and was placed in a pBluescript vector containing the Fabp2 enhancer/promoter region, the SV40 small tumor antigen splice site, and polyadenylation signal sequence. This construct was injected in C57BL/6 fertilized oocytes. Mice express the transgene almost exclusively in brown adipose tissue.