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Biochem Biophys Res Commun. 1991 Jun 28;177(3):1161-4.

Genetic defect of bilirubin UDP-glucuronosyltransferase in the hyperbilirubinemic Gunn rat.

Author information

1
Department of Biology, Shiga University of Medical Science, Japan.

Abstract

The genetic defect of bilirubin UDP-glucuronosyltransferase (UDPGT) in the hyperbilirubinemic Gunn rat was proved to be a -1 frameshift mutation. The mutation was found not only to be located in the region where bilirubin UDPGT cDNA shared an identical sequence with 3-methylcholanthrene (3M C)-inducible UDPGT cDNA but also to occur in the same position on the two cDNAs from the mutant rat. At the 5' end of the identical region there was a consensus sequence for splicing, of which position coincided with the boundary between the 2nd and 3rd exon of the testosterone UDPGT gene. These results strongly suggest that mRNAs for bilirubin and 3M C-inducible UDPGTs are produced from a single primary-transcript after an alternative splicing and the defects of bilirubin and 3M C-inducible UDPGTs in the mutant rat are caused by a point mutation on a common exon.

PMID:
1840486
DOI:
10.1016/0006-291x(91)90661-p
[Indexed for MEDLINE]

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