TY - JOUR
T1 - Nucleotide sequence and organization of the rat heme oxygenase gene.
AU - Müller, R. M.
AU - Taguchi, H.
AU - Shibahara, S.
N1 - Copyright:
Medline is the source for the citation and abstract of this record.
PY - 1987/5/15
Y1 - 1987/5/15
N2 - Heme oxygenase, an essential enzyme of heme catabolism, is inducible by its substrate heme, by heavy metals, and by various other substances. To study the molecular mechanisms of the induction of heme oxygenase, we isolated the heme oxygenase gene from a rat genomic DNA library using cloned cDNA as hybridization probes and determined its complete nucleotide sequence. The gene is composed of 6830 nucleotides, and is organized in four introns and five exons. The transcription initiation site was identified by S1 nuclease mapping analysis. Using HeLa cell lysate, we confirmed that the transcription of cloned heme oxygenase gene is initiated accurately at the assigned initiation site. In the 5'-flanking region of the heme oxygenase gene, we found several potential binding sites for different transcription factors: a transcription factor Sp1, a positive regulator for the control of amino acid synthesis (GCN4), a heat shock transcription factor, and a metal-dependent transcription factor. Furthermore, the intron 1 contains the sequence that shows about 65% homology to that of the neuronal identifier sequence, a possible enhancer element.
AB - Heme oxygenase, an essential enzyme of heme catabolism, is inducible by its substrate heme, by heavy metals, and by various other substances. To study the molecular mechanisms of the induction of heme oxygenase, we isolated the heme oxygenase gene from a rat genomic DNA library using cloned cDNA as hybridization probes and determined its complete nucleotide sequence. The gene is composed of 6830 nucleotides, and is organized in four introns and five exons. The transcription initiation site was identified by S1 nuclease mapping analysis. Using HeLa cell lysate, we confirmed that the transcription of cloned heme oxygenase gene is initiated accurately at the assigned initiation site. In the 5'-flanking region of the heme oxygenase gene, we found several potential binding sites for different transcription factors: a transcription factor Sp1, a positive regulator for the control of amino acid synthesis (GCN4), a heat shock transcription factor, and a metal-dependent transcription factor. Furthermore, the intron 1 contains the sequence that shows about 65% homology to that of the neuronal identifier sequence, a possible enhancer element.
UR - http://www.scopus.com/inward/record.url?scp=0023654799&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023654799&partnerID=8YFLogxK
M3 - Article
C2 - 3032976
AN - SCOPUS:0023654799
VL - 262
SP - 6795
EP - 6802
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
SN - 0021-9258
IS - 14
ER -