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Schulz V, Freibert SA, Boss L, Mühlenhoff U, Stehling O, Lill R. Mitochondrial [2Fe-2S] ferredoxins: new functions for old dogs. FEBS Lett 2023; 597:102-121. [PMID: 36443530 DOI: 10.1002/1873-3468.14546] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022]
Abstract
Ferredoxins (FDXs) comprise a large family of iron-sulfur proteins that shuttle electrons from NADPH and FDX reductases into diverse biological processes. This review focuses on the structure, function and specificity of mitochondrial [2Fe-2S] FDXs that are related to bacterial FDXs due to their endosymbiotic inheritance. Their classical function in cytochrome P450-dependent steroid transformations was identified around 1960, and is exemplified by mammalian FDX1 (aka adrenodoxin). Thirty years later the essential function in cellular Fe/S protein biogenesis was discovered for the yeast mitochondrial FDX Yah1 that is additionally crucial for the formation of haem a and ubiquinone CoQ6 . In mammals, Fe/S protein biogenesis is exclusively performed by the FDX1 paralog FDX2, despite the high structural similarity of both proteins. Recently, additional and specific roles of human FDX1 in haem a and lipoyl cofactor biosyntheses were described. For lipoyl synthesis, FDX1 transfers electrons to the radical S-adenosyl methionine-dependent lipoyl synthase to kickstart its radical chain reaction. The high target specificity of the two mammalian FDXs is contained within small conserved sequence motifs, that upon swapping change the target selection of these electron donors.
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Affiliation(s)
- Vinzent Schulz
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
| | - Sven-A Freibert
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
| | - Linda Boss
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
| | - Ulrich Mühlenhoff
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
| | - Oliver Stehling
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
| | - Roland Lill
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany.,Zentrum für Synthetische Mikrobiologie Synmikro, Marburg, Germany
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Baranowski ES, Arlt W, Idkowiak J. Monogenic Disorders of Adrenal Steroidogenesis. Horm Res Paediatr 2018; 89:292-310. [PMID: 29874650 PMCID: PMC6067656 DOI: 10.1159/000488034] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 02/27/2018] [Indexed: 12/19/2022] Open
Abstract
Disorders of adrenal steroidogenesis comprise autosomal recessive conditions affecting steroidogenic enzymes of the adrenal cortex. Those are located within the 3 major branches of the steroidogenic machinery involved in the production of mineralocorticoids, glucocorticoids, and androgens. This mini review describes the principles of adrenal steroidogenesis, including the newly appreciated 11-oxygenated androgen pathway. This is followed by a description of pathophysiology, biochemistry, and clinical implications of steroidogenic disorders, including mutations affecting cholesterol import and steroid synthesis, the latter comprising both mutations affecting steroidogenic enzymes and co-factors required for efficient catalysis. A good understanding of adrenal steroidogenic pathways and their regulation is crucial as the basis for sound management of these disorders, which in the majority present in early childhood.
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Affiliation(s)
- Elizabeth S. Baranowski
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom,Department of Paediatric Endocrinology and Diabetes, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Wiebke Arlt
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom,*Prof. Wiebke Arlt, Institute of Metabolism and Systems Research (IMSR), University of Birmingham, Birmingham B15 2TT (UK), E-Mail
| | - Jan Idkowiak
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom,Department of Paediatric Endocrinology and Diabetes, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
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Meyer T, Wirtz PH. Mechanisms of Mitochondrial Redox Signaling in Psychosocial Stress-Responsive Systems: New Insights into an Old Story. Antioxid Redox Signal 2018; 28:760-772. [PMID: 28558479 DOI: 10.1089/ars.2017.7186] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
SIGNIFICANCE Psychosocial stress is associated with alterations in serum glucocorticoids and cytokines, such as interleukin-6 (IL-6) and IL-1β, which functionally interact. However, the molecular mechanisms and physiological relationship between the two systems within the context of stress exposure are not well characterized. Recent Advances: Extracellular IL-6, which stimulates the release of cortisol from the zona fasciculata of the adrenal cortex, mediates its intracellular effects by tyrosine phosphorylation of the transcription factor signal transducer and activator of transcription 3 (STAT3). Mitochondrial electron transfer reactions are involved in both STAT3-driven ATP production in oxidative respiration and adrenocortical steroid biosynthesis. CRITICAL ISSUES The role of STAT3 in oxidative respiration and steroidogenesis suggests that it integrates both nuclear and mitochondrial actions, thereby preserving main steps of glucocorticoid biosynthesis in the adrenal gland under psychosocial stress. This review discusses the notion that these two pathways are together simultaneously involved in protection against chronic stressors. FUTURE DIRECTIONS Linking the function of cytokines and main components of the hypothalamic-pituitary-adrenal (HPA) axis to molecular mechanisms of mitochondrial redox signaling will be essential for a better understanding of the relevant stress-responsive systems engaged in stress vulnerability. Antioxid. Redox Signal. 28, 760-772.
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Affiliation(s)
- Thomas Meyer
- 1 Department of Psychosomatic Medicine and Psychotherapy, University of Göttingen , Göttingen, Germany
| | - Petra H Wirtz
- 2 Biological Work and Health Psychology, Department of Psychology, University of Konstanz , Konstanz, Germany
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Hanukoglu I. Conservation of the Enzyme-Coenzyme Interfaces in FAD and NADP Binding Adrenodoxin Reductase-A Ubiquitous Enzyme. J Mol Evol 2017; 85:205-218. [PMID: 29177972 DOI: 10.1007/s00239-017-9821-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
Abstract
FAD and NAD(P) together represent an ideal pair for coupled redox reactions in their capacity to accept two electrons and their redox potentials. Enzymes that bind both NAD(P) and FAD represent large superfamilies that fulfill essential roles in numerous metabolic pathways. Adrenodoxin reductase (AdxR) shares Rossmann fold features with some of these superfamilies but remains in a group of its own in the absence of sequence homology. This article documents the phylogenetic distribution of AdxR by examining whole genome databases for Metazoa, Plantae, Fungi, and Protista, and determines the conserved structural features of AdxR. Scanning these databases showed that most organisms have a single gene coding for an AdxR ortholog. The sequence identity between AdxR orthologs is correlated with the phylogenetic distance among metazoan species. The NADP binding site of all AdxR orthologs showed a modified Rossmann fold motif with a GxGxxA consensus instead of the classical GxGxxG at the edge of the first βα-fold. To examine the hypothesis that enzyme-coenzyme interfaces represent the conserved regions of AdxR, the residues interfacing FAD and NADP were identified and compared with multiple-sequence alignment results. Most conserved residues were indeed found at sites that surround the interfacing residues between the enzyme and the two coenzymes. In contrast to protein-protein interaction hot-spots that may appear in isolated patches, in AdxR the conserved regions show strict preservation of the overall structure. This structure maintains the precise positioning of the two coenzymes for optimal electron transfer between NADP and FAD without electron leakage to other acceptors.
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Affiliation(s)
- Israel Hanukoglu
- Laboratory of Cell Biology, Ariel University, 40700, Ariel, Israel.
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Selvaraj V, Tu LN. Current status and future perspectives: TSPO in steroid neuroendocrinology. J Endocrinol 2016; 231:R1-R30. [PMID: 27422254 DOI: 10.1530/joe-16-0241] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 07/15/2016] [Indexed: 12/21/2022]
Abstract
The mitochondrial translocator protein (TSPO), previously known as the peripheral benzodiazepine receptor (PBR), has received significant attention both as a diagnostic biomarker and as a therapeutic target for different neuronal disease pathologies. Recently, its functional basis believed to be mediating mitochondrial cholesterol import for steroid hormone production has been refuted by studies examining both in vivo and in vitro genetic Tspo-deficient models. As a result, there now exists a fundamental gap in the understanding of TSPO function in the nervous system, and its putative pharmacology in neurosteroid production. In this review, we discuss several recent findings in steroidogenic cells that are in direct contradiction to previous studies, and necessitate a re-examination of the purported role for TSPO in de novo neurosteroid biosynthesis. We critically examine the pharmacological effects of different TSPO-binding drugs with particular focus on studies that measure neurosteroid levels. We highlight the basis of key misconceptions regarding TSPO that continue to pervade the literature, and the need for interpretation with caution to avoid negative impacts. We also summarize the emerging perspectives that point to new directions that need to be investigated for understanding the molecular function of TSPO, only after which the true potential of this therapeutic target in medicine may be realized.
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Affiliation(s)
- Vimal Selvaraj
- Department of Animal ScienceCornell University, Ithaca, New York, USA
| | - Lan N Tu
- Department of Animal ScienceCornell University, Ithaca, New York, USA
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Omura T. Recollection of the early years of the research on cytochrome P450. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2011; 87:617-40. [PMID: 22156409 PMCID: PMC3311014 DOI: 10.2183/pjab.87.617] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
Since the publication of the first paper on "cytochrome P450" in 1962, the biochemical research on this novel hemoprotein expanded rapidly in the 1960s and the 1970s as its principal roles in various important metabolic processes including steroid hormone biosynthesis in the steroidogenic organs and drug metabolism in the liver were elucidated. Establishment of the purification procedures of microsomal and mitochondrial P450s in the middle of the 1970s together with the introduction of molecular biological techniques accelerated the remarkable expansion of the research on P450 in the following years. This review paper summarizes the important developments in the research on P450 in the early years, for about two decades from the beginning, together with my personal recollections.
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9
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Kimura T. Biochemical aspects of iron-sulfur linkage in non-heme iron protein, with special reference to “Adrenodoxin”. STRUCTURE AND BONDING 2008. [DOI: 10.1007/bfb0118845] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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10
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Buchanan BB, Arnon DI. Ferredoxins: chemistry and function in photosynthesis, nitrogen fixation, and fermentative metabolism. ADVANCES IN ENZYMOLOGY AND RELATED AREAS OF MOLECULAR BIOLOGY 2006; 33:119-76. [PMID: 4393906 DOI: 10.1002/9780470122785.ch3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Schiffler B, Zöllner A, Bernhardt R. Stripping down the mitochondrial cholesterol hydroxylase system, a kinetics study. J Biol Chem 2004; 279:34269-76. [PMID: 15181009 DOI: 10.1074/jbc.m402798200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The origin of steroid hormones in mammals is cholesterol that is metabolized by the mitochondrial CYP11A1 system. The cytochrome P450 is fed with reduction equivalents via a small electron transfer chain consisting of NADPH, adrenodoxin reductase, and adrenodoxin. Though the redox behavior of the individual protein components has been studied previously, the kinetics of the system in its entirety has not yet been analyzed. In this study we combine surface plasmon resonance experiments to determine the binding constants for the different pairs of redox partners with measurements of the pre-steady-state kinetics of the different reaction steps of this system and steady-state kinetics. We could correlate the individual protein-protein interactions with the effect of distinct reduction-oxidation steps on the overall catalytic activity of the CYP11A1 system. For the first time, we were able to follow the reduction of each of the protein components of this system within one measurement when we mixed all oxidized protein components with NADPH. These measurements allowed the determination of the individual apparent rate constants for the reduction of all three proteins involved. In addition, variation of the ionic strength in these experiments revealed different optimum salt concentrations for the reduction of adrenodoxin reductase and adrenodoxin, respectively, and unraveled dramatically changing reduction rates of CYP11A1 by adrenodoxin.
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Affiliation(s)
- Burkhard Schiffler
- Naturwissenschaftlich-Technische Fakultät III, FR 8.8-Biochemie, Universität des Saarlandes, P. O. Box 151150, D-66041 Saarbrücken, Germany
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12
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Ropp JD, Gunsalus IC, Sligar SG. Cloning and expression of a member of a new cytochrome P-450 family: cytochrome P-450lin (CYP111) from Pseudomonas incognita. J Bacteriol 1993; 175:6028-37. [PMID: 8376348 PMCID: PMC206685 DOI: 10.1128/jb.175.18.6028-6037.1993] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Cytochrome P-450lin catalyzes the 8-methyl hydroxylation of linalool as the first committed step of its utilization by Pseudomonas incognita as the sole carbon source. By using a polymerase chain reaction-based cloning strategy, a 2.1-kb DNA fragment containing the cytochrome P-450lin gene (linC) was isolated. An open reading frame of 406 amino acids has been identified as that of P-450lin on the basis of amino acid sequence data from peptides of the native protein. Heterologous expression of functional holoprotein is exhibited by Escherichia coli transformed with pUC18 containing the subcloned linC gene under constitutive transcriptional control of the lac promoter. The G+C content of linC was found to be 55% overall and 58% in the third codon position. An optimized amino acid sequence alignment of P-450lin with cytochrome P-450cam shows that the two enzymes have only 25% identity. P-450lin was found to exhibit the expected conservation in the axial cysteine heme ligand-containing peptide and the threonine region postulated to form an O2-binding pocket (T. L. Poulos, B. C. Finzel, and A. J. Howard, J. Mol. Biol. 195:687-700, 1987). The low amino acid sequence identity between P-450lin and all other P-450 sequences has shown that P-450lin is the first member of the CYP111 P-450 gene family.
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Affiliation(s)
- J D Ropp
- Department of Biochemistry, University of Illinois, Urbana 61801
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Shimizu C, Tomita S, Matsuo Y, Miyatake A, Ichikawa Y. Determination of the amino acid sequence of adreno-ferredoxin from sheep adrenocortical mitochondria. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1992; 24:281-8. [PMID: 1733794 DOI: 10.1016/0020-711x(92)90259-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1. An adreno-ferredoxin was purified from sheep adrenocortical mitochondria. 2. Its amino acid composition and amino acid sequence were determined chemically. 3. It was found to be composed of 127 amino acid residues, including two tyrosyl residues. 4. The amino acid sequences of various ferredoxins of the two iron and two sulfur type were compared with respect to amino acid homology.
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Affiliation(s)
- C Shimizu
- Department of Biochemistry, Kagawa Medical School, Japan
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14
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Abstract
Bovine adrenocortical ferredoxin (adreno-ferredoxin) was purified from adrenocortical mitochondria by an improved method that included hydrophobic chromatography on Toyopearl gels. The purified ferredoxin was electrophoretically homogeneous. It was further separated into five fractions by hydrophobic chromatography on a TSK-gel phenyl-5PW column with a high-pressure liquid chromatography system. The properties of the three main fractions were examined. The fractions had identical absorption spectra and almost the same activity in an NADPH-cytochrome c reducing system. Their amino-terminal sequences all corresponded to the reported sequence, but the carboxyl-terminal residues were glycine or serine, not alanine as reported. These results indicate that these adreno-ferredoxins had additional amino acid residues at the carboxyl end. It seems that adreno-ferredoxin extracted from mitochondria undergoes proteolytic attack during purification to become heterogeneous.
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Boggaram V, Zuber MX, Waterman MR. Turnover of newly synthesized cytochromes P-450scc and P-45011 beta and adrenodoxin in bovine adrenocortical cells in monolayer culture: effect of adrenocorticotropin. Arch Biochem Biophys 1984; 231:518-23. [PMID: 6329102 DOI: 10.1016/0003-9861(84)90416-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The turnover of newly synthesized cytochromes P-450scc and P-45011 beta, and adrenodoxin was investigated in bovine adrenocortical cells in primary monolayer cultures. Cells were pulse-radiolabeled with [35S]methionine, and specific newly synthesized enzymes were immunoisolated at various times following labeling and quantitated. Adrenocorticotropin (ACTH) treatment did not alter the average turnover rate of total cellular proteins or that of total mitochondrial proteins. The half-life of total cellular proteins of control and ACTH-treated cells was determined to be 20.5 and 23 h, respectively. The half-life of mitochondrial proteins of control and ACTH-treated cells was determined to be 42.5 and 44 h, respectively. The turnover rate of newly synthesized cytochrome P-450scc was approximately the same as total mitochondrial protein (t1/2 = 38 h), and was unchanged by ACTH treatment (t1/2 = 42 h). ACTH treatment did not greatly alter the turnover rate of adrenodoxin. The half-life of adrenodoxin from control and ACTH-treated cells was determined to be 20 and 17 h, respectively. However, ACTH treatment appeared to increase the half-life of cytochrome P-45011 beta from 16 h in control cells to 24 h in treated cells. The differential rate of turnover of mitochondrial proteins studied here supports the contention that mitochondria are subject to heterogeneous degradation. It appears that chronic treatment of bovine adrenocortical cells in culture with ACTH leads to increased steroidogenic capacity, primarily as a result of increased synthesis of steroidogenic enzymes, although, as shown for cytochrome P-45011 beta, ACTH action might also increase steroidogenic capacity by increasing the half-life of this steroid hydroxylase.
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Boggaram V, Simpson ER, Waterman MR. Induction of synthesis of bovine adrenocortical cytochromes P-450scc, P-45011 beta, P-450C21, and adrenodoxin by prostaglandins E2 and F2 alpha and cholera toxin. Arch Biochem Biophys 1984; 231:271-9. [PMID: 6329096 DOI: 10.1016/0003-9861(84)90388-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
To further elucidate the mechanisms by which ACTH (adrenocorticotropin) exerts its long-term action to maintain normal levels of adrenocortical cytochromes P-450 and related enzymes, the abilities of cholera toxin and prostaglandins E2 and F2 alpha to induce the synthesis of cytochromes P-450scc, P-45011 beta, and P-450C21 and adrenodoxin have been examined. These effectors stimulate the production of cyclic AMP and thus steroidogenesis in the adrenal cortex. Using bovine adrenocortical cells in primary monolayer culture, we have shown that treatment with cholera toxin results in increased synthesis of cytochromes P-450scc and P-45011 beta and adrenodoxin, similar to the effect observed upon ACTH treatment. Prostaglandins E2 and F2 alpha are less effective at inducing the synthesis of the mitochondrial cytochromes P-450, and do not seem to induce the synthesis of adrenodoxin. Furthermore, cholera toxin was found to be less effective at inducing the synthesis of microsomal cytochrome P-450C21 than ACTH, and no more effective than the prostaglandins. Thus, while it appears that elevation of cyclic AMP levels is a necessary step leading to increased synthesis of adrenocortical forms of cytochrome P-450, the detailed mechanism of this induction will be found to be different for each of the different enzymes.
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Adrenodoxin biosynthesis by bovine adrenal cells in monolayer culture. Induction by adrenocorticotropin. J Biol Chem 1982. [DOI: 10.1016/s0021-9258(18)33371-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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18
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Waterman MR. ACTH-mediated induction of synthesis and activity of cytochrome P-450s and related enzymes in cultured bovine adrenocortical cells. Xenobiotica 1982; 12:773-86. [PMID: 6188284 DOI: 10.3109/00498258209038949] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
1. Cytochromes P-450sec and P-450(11) beta, adrenodoxin and adrenodoxin reductase, mitochondrial components of the adrenocortical steroid hydroxylase pathway, are synthesized as higher molecular weight precursors; cytochrome P-450C-21, a microsomal component of this pathway, is synthesized as the mature form. 2. Synthesis of the above mitochondrial components is induced by ACTH in a co-ordinated fashion. Synthesis of cytochrome P-450C-21 and NADPH-cytochrome P-450 reductase is also induced by ACTH, however, the induction of these microsomal components is not co-ordinated with that of the mitochondrial components. 3. Following treatment of cultured cells with ACTH, the pattern of glucocorticoid output changes from approximately equal amounts of cortisol and corticosterone to predominately cortisol within 24 h. This change results from a large induction of cytochrome P-450(17) alpha activity in response to ACTH. 4. Bovine adrenocortical cells in culture become refractory to continued treatment with ACTH. This refractoriness is manifested in terms of steroid output; synthesis of cytochromes P-450scc, P-450(11) beta and P-450C-21, adrenodoxin and adrenodoxin reductase; and activities of cholesterol side-chain cleavage, 11 beta-hydroxylase and 17 alpha-hydroxylase.
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Kitagawa T, Sakamoto H, Sugiyama T, Yamano T. Formation of the semiquinone form in the anaerobic reduction of adrenodoxin reductase by NADPH. Resonance Raman, EPR, and optical spectroscopic evidence. J Biol Chem 1982. [DOI: 10.1016/s0021-9258(18)33680-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Hepatic and Extrahepatic Mixed‐Function Oxidases. Compr Physiol 1977. [DOI: 10.1002/cphy.cp090126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Griffin BW, Peterson JA, Werringloer J, Estabrook RW. Chemistry of soluble and membrane-bound cytochrome P-450. Ann N Y Acad Sci 1975; 244:107-31. [PMID: 166589 DOI: 10.1111/j.1749-6632.1975.tb41526.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Estabrook RW, Martinez-Zedillo G, Young S, Peterson JA, McCarthy J. The interaction of steroids with liver microsomal cytochrome P-450--a general hypothesis. JOURNAL OF STEROID BIOCHEMISTRY 1975; 6:419-25. [PMID: 1186236 DOI: 10.1016/0022-4731(75)90166-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Mukai K, Huang JJ, Kimura T. Studies on adrenal steroid hydroxylases Chemical and enzymatic properties of selenium derivatives of adrenal iron-sulfur protein. ACTA ACUST UNITED AC 1974. [DOI: 10.1016/0005-2795(74)90424-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Estabrook RW, Mason JI, Baron J, Lambeth D, Waterman M. Drugs, alcohol and sex hormones: a molecular perspective of the receptivity of cytochrome P-450. Ann N Y Acad Sci 1973; 212:27-49. [PMID: 4155925 DOI: 10.1111/j.1749-6632.1973.tb47584.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Vainio H. Action of chaotropic agents on drug-metabolizing enzymes in hepatic microsomes. BIOCHIMICA ET BIOPHYSICA ACTA 1973; 307:152-61. [PMID: 4145745 DOI: 10.1016/0005-2736(73)90033-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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27
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28
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Baron J, Taylor WE, Masters BS. Immunochemical studies on electron transport chains involving cytochrome P-450. The role of the iron-sulfur protein, adrenodoxin, in mixed-function oxidation reactions. Arch Biochem Biophys 1972; 150:105-15. [PMID: 4402150 DOI: 10.1016/0003-9861(72)90016-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Mason JI, Boyd GS. The cholesterol side-chain cleavage enzyme system in mitochondria of human term placenta. EUROPEAN JOURNAL OF BIOCHEMISTRY 1971; 21:308-21. [PMID: 4398212 DOI: 10.1111/j.1432-1033.1971.tb01471.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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30
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Lebeault JM, Lode ET, Coon MJ. Fatty acid and hydrocarbon hydroxylation in yeast: role of cytochrome P-450 in Candida tropicalis. Biochem Biophys Res Commun 1971; 42:413-9. [PMID: 5542889 DOI: 10.1016/0006-291x(71)90386-x] [Citation(s) in RCA: 115] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Huang JJ, Kimura T. Does reduced nicotinamide adenine dinucleotide phosphate have a dual function in steroid hydroxylation reactions in adrenal mitochondria? Biochem Biophys Res Commun 1970; 41:737-40. [PMID: 4394649 DOI: 10.1016/0006-291x(70)90075-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Kimura T, Huang JJ. Studies on adrenal steroid hydroxylases: optical absorption spectroscopy of adrenal iron-sulfur protein (adrenodoxin) and its apoprotein. Arch Biochem Biophys 1970; 137:357-64. [PMID: 5439301 DOI: 10.1016/0003-9861(70)90449-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Sulimovici SI, Boyd GS. The cholesterol side-chain cleavage enzymes in steroid hormone-producing tissues. VITAMINS AND HORMONES 1970; 27:199-234. [PMID: 4392822 DOI: 10.1016/s0083-6729(08)61127-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Padmanabhan R, Kimura T. Extrinsic properties of optical activity in adrenal iron-sulfur protein (adrenodoxin). Biochem Biophys Res Commun 1969; 37:363-8. [PMID: 5823941 DOI: 10.1016/0006-291x(69)90743-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Sulimovici S, Boyd GS. The effect of ascorbic acid in vitro on the rat ovarian cholesterol side chain cleavage enzyme system. Steroids 1968; 12:127-49. [PMID: 5693202 DOI: 10.1016/s0039-128x(68)80085-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Suzuki K. Sulfhydryl groups of iron environment in non-heme iron protein (adrenodoxin) as an oxidation-reduction component of steroid 11-beta-hydroxylase from adrenal mitochondria. Biochemistry 1967; 6:1335-41. [PMID: 6068284 DOI: 10.1021/bi00857a016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Ohno H, Suzuki K, Kimura T. A non-heme iron protein from pig testis and its substitution for adrenal non-heme iron protein (adrenodoxin) in steroid 11-beta-hydroxylation. Biochem Biophys Res Commun 1967; 26:651-5. [PMID: 6067710 DOI: 10.1016/s0006-291x(67)80121-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Cushman DW, Tsai RL, Gunsalus IC. The ferroprotein component of a methylene hydroxylase. Biochem Biophys Res Commun 1967; 26:577-83. [PMID: 4383050 DOI: 10.1016/0006-291x(67)90104-0] [Citation(s) in RCA: 94] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Miyake Y, Mason H, Landgraf W. An Electron Spin Resonance Study of Liver and Adrenal Mixed Function Oxidases near the Temperature of Liquid Helium. J Biol Chem 1967. [DOI: 10.1016/s0021-9258(18)96283-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Omura T, Sanders E, Estabrook R, Cooper D, Rosenthal O. Isolation from adrenal cortex of a nonheme iron protein and a flavoprotein functional as a reduced triphosphopyridine nucleotide-cytochrome P-450 reductase. Arch Biochem Biophys 1966. [DOI: 10.1016/0003-9861(66)90108-1] [Citation(s) in RCA: 331] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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