Expression of NAD(+)-dependent isocitrate dehydrogenase in brown adipose tissue.
cDNA clones significantly expressed in brown adipose tissue (BAT) but not in white adipose tissue (WAT) of rats were isolated by use of a PCR-select cDNA subtraction kit. Of the isolated clones, structural features of two of them, 2-58 and 2-67, were studied in detail. The results indicated that these clones were cDNAs encoding alpha- and beta-subunits of rat NAD(+)-dependent isocitrate dehydrogenase (NAD(+)-ICDH). Previous biochemical study suggested the importance of NAD(+)-ICDH in metabolism in BAT; however, transcript levels of individual subunits of this enzyme in BAT had never been analyzed. In the present study, using these newly isolated cDNAs, we clearly demonstrate that the expression of three subunits of NAD(+)-ICDH was the most remarkable in BAT among the various tissues analyzed.
Faculty of Pharmaceutical Sciences, University of Tokushima, Shomachi-1, Tokushima, 770-8505, Japan.
Y
Y
Shinohara
T
T
Daikoku
K
K
Kajimoto
A
A
Shima
N
N
Yamazaki
H
H
Terada
D002001:Adipose Tissue, Brown / Q000378:metabolism*; D000818:Animals; D001483:Base Sequence; D018076:DNA, Complementary; D007521:Isocitrate Dehydrogenase / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D009243:NAD / Q000378:metabolism*; D016133:Polymerase Chain Reaction; D051381:Rats; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
D018076:DNA, Complementary; D009243:NAD; D007521:Isocitrate Dehydrogenase