Abstract
We have sequenced serum albumin cDNA from liver of the Mongolian gerbil, Meriones unguiculatus. The deduced amino acid sequence showed 82.6% and 73.6% identity with the corresponding proteins from rats and humans, respectively. Identical cDNA was detected in pancreas by reverse transcription followed by polymerase chain reaction (RT-PCR). Further amplification of cDNA by nested PCR revealed the presence of the same cDNA in the brain and kidney. These results indicate that serum albumin is expressed in some extrahepatic tissues. In rats, an albumin-related 70-kDa protein (P70) has been proposed to be associated with cobalt-induced epilepsy (Onozuka et al. (1995) Neurochem. Res., 20, 901-905). We intensively searched for a P70-like protein in the brain of an epilepsy-prone gerbil strain, MGS/Idr, by the RT-PCR and nested PCR using several pairs of primers based on the albumin cDNA sequence. However, we found only mRNA for albumin itself.
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