Cited by 107Porphyrin Metabolism and DisordersHeme Oxygenase-1 and Carbon MonoxideNeonatal Health and Biochemistry

Regulation of 5-aminolevulinate synthase mRNA in different rat tissues.

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Srivastava, G, Borthwick, I A, Maguire, D J, Elferink, C J, Bawden, M J, Mercer, J F, May, B K·1988·Journal of Biological Chemistry

Abstract

cDNA clones for rat liver 5-aminolevulinate synthase have been isolated and used to examine mRNA levels in different rat tissues. Northern hybridization analysis of total RNA from various rat tissues showed the presence of a single 5-aminolevulinate synthase mRNA species of estimated length 2.3 kilobases. Primer extension and RNase mapping studies indicated that the mRNA is identical in all tissues. Highest basal levels were seen in liver and heart. Administration of hemin to rats reduced the basal level of this mRNA only in liver but the heme precursor, 5-aminolevulinate (or its methyl ester), repressed the basal levels in liver, kidney, heart, testis, and brain. The drug 2-allyl-2-isopropylacetamide increased the mRNA level in liver and kidney only while human chorionic gonadotropin hormone elevated the level in testis. Administration of the heme precursor 5-aminolevulinate prevented these inductions. Nuclear transcriptional run-off experiments in liver cell nuclei showed that 2-allyl-2-isopropylacetamide and 5-aminolevulinate exert their effect by altering the rate of transcription of the 5-aminolevulinate synthase gene. The results indicate that a single 5-aminolevulinate synthase mRNA is expressed in all tissues and that its transcription is negatively regulated by heme.

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Crossref · 10.1016/s0021-9258(18)60700-8

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  • There is evidence that heme not only regulates ALAS1 mitochondrial import but also attenuates its transcription.

    “Moreover, there is evidence that heme not only regulates ALAS1 mitochondrial import but also attenuates its transcription [36,37].”

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Authors
Srivastava, G., Borthwick, I. A., Maguire, D. J., Elferink, C. J., Bawden, M. J., Mercer, J. F., & May, B. K.
Affiliations
The University of Adelaide (AU)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1988-04
Volume
263
Issue
11
Pages
5202-5209
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1506718658
Cited by
107
References
26
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2016: 1 · 2013: 1 · 2012: 2
FWCI
4.64
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Porphyrin Metabolism and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal Health and Biochemistry
Keywords
5-aminolevulinate synthase, mRNA expression, tissue-specific gene expression, heme regulation, 5-aminolevulinic acid, human chorionic gonadotropin, transcriptional regulation, heme biosynthesis, liver, kidney, testis, cDNA cloning
MeSH terms
5-Aminolevulinate Synthetase, Animals, Base Sequence, Codon, DNA, Hemin, Male, Molecular Sequence Data, Nucleic Acid Hybridization, Rats, Inbred Strains, Ribonucleases, RNA, Messenger, Tissue Distribution, Transcription, Genetic, Rats

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