Nucleic Acids Research, 1986, Vol. 14, No. 3 1379-1391
© 1986
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Nudeotide sequence of the chicken 5-aminolevulinate synthase gene
Adelaide University Centre for Gene Technology, Commonwealth Special Research Centre, Department of Biochemistry, University of Adelaide South Australia
Received December 10, 1985. Accepted January 17, 1986.
5-Aminolevul inate synthase, the first and rate-controlling enzyme of heme biosynthesis, is regulated in the liver by the end-product heme. To study this negative control mechanism, we have isolated the chicken gene for ALA-synthase and determined the nucleotide sequence. The structural gene is 6.9 kb long and contains 10 exons. The transcriptional start site for ALA-synthase was determined by primer extension analysis. A fragment of 291 bp from the 5' flanking region including 34 bp of the first exon shows promoter activity when introduced upstream of a chicken hi stone H2B gene and injected into the nuclei of Xenopus laevis oocytes.
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