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Gene. 1997 Sep 15;197(1-2):289-93.

Molecular cloning and expression of a rat cDNA encoding 5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/IMP cyclohydrolase.

Author information

  • 1Department of Food Science and Nutrition, Nara Women's University, Japan.

Erratum in

  • Gene 1998 Feb 27;208(2):337.

Abstract

The cDNA of a 5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/IMP cyclohydrolase (AICARFT/IMPCHase) was isolated from rat liver RNA by reverse transcription and the polymerase chain reaction (PCR). The rat AICARFT/IMPCHase cDNA included 1928 bp containing a coding region of 1779 bp for a 592-amino acid polypeptide (Mr = 64 200). Rat and human AICARFT/IMPCHase cDNAs show 84 and 91% homology at the nucleotide and amino acid sequence level, respectively. The protein produced by the rat cDNA using pET-expression system catalysed the penultimate and final steps of de novo purine biosynthesis. Northern analysis identified a 2.8-kb AICARFT/IMPCHase mRNA and the level of the AICARFT/IMPCHase transcripts increased markedly at 24 h after partial (70%) hepatectomy.

PMID:
9332377
[PubMed - indexed for MEDLINE]
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