Cited by 153Hormonal Regulation and HypertensionAdrenal Hormones and DisordersSteroid Chemistry and Biochemistry

Cloning and expression of a cDNA for human cytochrome P-450aldo as related to primary aldosteronism

Kawamoto, Takeshi, Mitsuuchi, Yasuhiro, Ohnishi, Taira, Ichikawa, Yoshiyuki, Yokoyama, Yuichi, Sumimoto, Hidetoshi, Toda, Katsumi, Miyahara, Kaoru +6 more·1990·Biochemical and Biophysical Research Communications

Abstract

A cDNA clone encoding human aldosterone synthase cytochrome P-450 (P-450aldo) has been isolated from a cDNA library derived from human adrenal tumor of a patient suffering from primary aldosteronism. The insert of the clone contains an open reading frame encoding a protein of 503 amino acid residues together with a 3 bp 5'-untranslated region and a 1424 bp 3'-untranslated region to which a poly(A) tract is attached. The nucleotide sequence of P-450aldo cDNA is 93% identical to that of P-450(11) beta cDNA. Catalytic functions of these two P-450s expressed in COS-7 cells are very similar in that both enzymes catalyze the formation of corticosterone and 18-hydroxy-11-deoxycorticosterone using 11-deoxycorticosterone as a substrate. However, they are distinctly different from each other in that P-450aldo preferentially catalyzes the conversion of 11-deoxycorticosterone to aldosterone via corticosterone and 18-hydroxycorticosterone while P-450(11)beta substantially fails to catalyze the reaction to form aldosterone. These results suggest that P-450aldo is a variant of P-450(11)beta, but this enzyme is a different gene product possibly playing a major role in the synthesis of aldosterone at least in a patient suffering from primary aldosteronism.

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Crossref · 10.1016/s0006-291x(05)81058-7

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Authors
Kawamoto, T., Mitsuuchi, Y., Ohnishi, T., Ichikawa, Y., Yokoyama, Y., Sumimoto, H., Toda, K., Miyahara, K., Kuribayashi, I., Nakao, K., Hosoda, K., Yamamoto, Y., Imura, H., & Shizuta, Y.
Affiliations
  • Kochi Medical School Hospital (JP)
  • Kyoto University (JP)
  • Kagawa University (JP)
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
1990-11
Volume
173
Issue
1
Pages
309-316
ISSN
0006-291X (ISSN-L)
OpenAlex
W1990953561
Cited by
152
References
26
Citations by year
2023: 1 · 2022: 1 · 2019: 1 · 2018: 2 · 2016: 2 · 2015: 3 · 2014: 1 · 2013: 4 · 2012: 2
FWCI
12.27
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • Korea Toray Science Foundation
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
aldosterone synthase, primary aldosteronism, cDNA cloning, adrenal tumors, aldosterone biosynthesis, deoxycorticosterone, corticosterone, 18-hydroxy-11-deoxycorticosterone
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Cell Line, Cloning, Molecular, Cytochrome P-450 Enzyme System, DNA, Humans, Hyperaldosteronism, Mitochondria, Molecular Sequence Data, Recombinant Proteins, Steroid Hydroxylases, Substrate Specificity, Transfection, Restriction Mapping, Oligonucleotide Probes, Gene Expression, Cytochrome P-450 CYP11B2

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