Cited by 101Adrenal Hormones and DisordersSexual Differentiation and DisordersSteroid Chemistry and Biochemistry

Molecular evolution of adrenarche: structural and functional analysis of p450c17 from four primate species

Arlt, Wiebke, Martens, John W. M., Song, Maengseok, Wang, Jonathan T., Auchus, Richard J., Miller, Walter L.·2002·Endocrinology

Abstract

Adrenarche is the prepubertal onset of increased adrenal secretion of 19-carbon steroids, especially dehydroepiandrosterone (DHEA). However, while human beings and chimpanzees exhibit adrenarche, other primates such as the baboon and rhesus monkey do not, and the adrenals of most other mammals produce little or no DHEA. Thus, the acquisition of adrenarche is a very recent evolutionary event. DHEA is produced from pregnenolone by the successive 17alpha-hydroxylase and 17,20 lyase activities of a single enzyme, P450c17. To ascertain whether sequence differences in P450c17 contribute to adrenarche, we cloned the rhesus monkey cDNA from adrenal tissue and cloned the chimpanzee and baboon cDNAs from genomic DNA using an exon-trapping strategy. Using microsomes from yeast transformed with rhesus, baboon, chimp, or human P450c17, we measured the Michaelis constant and maximum velocity for the 17alpha-hydroxylase and 17,20 lyase activities. The human and chimp enzymes differ at only two amino acids and baboon and rhesus P450c17 only at a single residue; the human/chimp enzyme differed from the baboon/rhesus enzyme by 25-27 residues (95% identity). Surprisingly, the greatest difference in enzymatic activities was a marked increase in 17alpha-hydroxylase activity of P450c17 in the baboon, which differs from rhesus only at residue 255 [arginine (Arg) in baboon, histine (His) in rhesus]. Residue 255 is also Arg in human and chimp. Wild-type human P450c17 and its Arg255His mutant had similar 17alpha-hydroxylase activities, but the Arg255Ala mutant had decreased 17alpha-hydroxylase activity. These data establish that Arg255 is important for 17alpha-hydroxylase activity and show that the evolution of adrenarche in higher primates is not determined by variations in the sequence of P450c17.

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Crossref · 10.1210/en.2002-220456

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  • Adrenal cortex is responsible for biosynthesis of mineralocorticoids and glucocorticoids, as well as production of adrenal androgen precursors and androgens, a function unique to higher primates.

    “The cortex of the adrenal gland is responsible for the biosynthesis of mineralocorticoids and glucocorticoids, as well as the production of adrenal androgen precursors and androgens, a function unique to higher primates [19,20].”
  • Adrenal C19 steroid production is initiated during adrenarche, a pre-pubertal event approximately age 8 in girls and 9 in boys, unique to humans and higher primates.

    “It should be noted that adrenal C19 steroid production is initiated during adrenarche, a pre-pubertal event (approximately age 8 in girls and 9 in boys (Idkowiak et al., 2011)) unique to humans and higher primates (Abbott and Bird, 2009, Arlt et al., 2002, Auchus and Rainey, 2004, Miller, 2008).”

    From Intracrine androgen biosynthesis, metabolism and action revisited (2018) · cites this paper as Arlt et al., 2002

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Authors
Arlt, W., Martens, J. W. M., Song, M., Wang, J. T., Auchus, R. J., & Miller, W. L.
Affiliations
  • University of California, San Francisco (US)
  • The University of Texas Southwestern Medical Center (US)
Venue
Endocrinology
Published
2002-12-01
Volume
143
Issue
12
Pages
4665-4672
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2142886860
Cited by
101
References
34
Citations by year
2025: 1 · 2024: 1 · 2022: 3 · 2021: 4 · 2019: 4 · 2018: 3 · 2017: 4 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 4 · 2012: 5
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
  • National Institutes of Health (1r43dk041958-01, 5k08dk002387-06)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-37922, K08 DK 02387, R01DK037922)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (U54-HD34449, U54HD034449, HD/DK 41958)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
adrenarche, CYP17, P450c17, 17α-hydroxylase, 17,20-lyase, dehydroepiandrosterone, pregnenolone, primate evolution, chimpanzees, baboons, rhesus monkeys, enzyme kinetics, steroidogenesis, adrenal gland
MeSH terms
Adrenal Glands, Amino Acid Sequence, Animals, Arginine, Pan troglodytes, Cloning, Molecular, Computer Simulation, Humans, Kinetics, Macaca mulatta, Microsomes, Models, Molecular, Molecular Sequence Data, Papio, Steroid 17-alpha-Hydroxylase, Structure-Activity Relationship, Mutagenesis, Site-Directed, Sequence Alignment, DNA, Complementary, Evolution, Molecular

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