Generation of the peri null mouse. (A)
Targeted mutation of the murine peri gene.
Upper diagram indicates the nine exons in boxes of the
peri gene, with translation start and stop sites for the
predominant Peri A form (3) and EcoRI and
PstI sites. Below is the mutated peri
gene with the Neomycin resistance cassette inserted into the
EcoRI sites of introns 3 and 6. The position of the
insertion would disrupt coding of all four peri mRNA species(X. Lu,
J.G.-G., N. G. Copeland, D. J. Gilbert, N. A. Jenkins,
C.L. & A.R.K., unpublished work). The region used for homologous
recombination is indicated by the thick line. The bar below exon 9
represents the position of the downstream probe used to assess
homologous recombination within the peri locus in
PstI digests for genomic Southern blots.
(B) Southern blotting of tail DNA digested with
PstI. (C) Immunoblotting of adipose
tissue extracts for peri A, ADRP, and HSL. Adipose tissue samples were
extracted and proteins solubilized as described under
Experimental Procedures. Gel lanes were loaded with the
equivalent of proteins extracted from 10 mg of adipose tissue.