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A large-scale comparative analysis of affinity, thermodynamics and functional characteristics of interactions of twelve cytochrome P450 isoforms and their redox partners. Biochimie 2019; 162:156-166. [DOI: 10.1016/j.biochi.2019.04.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/24/2019] [Indexed: 12/16/2022]
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Ershov PV, Mezentsev YV, Kopylov AT, Yablokov EO, Svirid AV, Lushchyk AY, Kaluzhskiy LA, Gilep AA, Usanov SA, Medvedev AE, Ivanov AS. Affinity Isolation and Mass Spectrometry Identification of Prostacyclin Synthase (PTGIS) Subinteractome. BIOLOGY 2019; 8:E49. [PMID: 31226805 PMCID: PMC6628129 DOI: 10.3390/biology8020049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/06/2019] [Accepted: 06/18/2019] [Indexed: 01/04/2023]
Abstract
Prostacyclin synthase (PTGIS; EC 5.3.99.4) catalyzes isomerization of prostaglandin H2 to prostacyclin, a potent vasodilator and inhibitor of platelet aggregation. At present, limited data exist on functional coupling and possible ways of regulating PTGIS due to insufficient information about protein-protein interactions in which this crucial enzyme is involved. The aim of this study is to isolate protein partners for PTGIS from rat tissue lysates. Using CNBr-activated Sepharose 4B with covalently immobilized PTGIS as an affinity sorbent, we confidently identified 58 unique proteins by mass spectrometry (LC-MS/MS). The participation of these proteins in lysate complex formation was characterized by SEC lysate profiling. Several potential members of the PTGIS subinteractome have been validated by surface plasmon resonance (SPR) analysis. SPR revealed that PTGIS interacted with full-length cytochrome P450 2J2 and glutathione S-transferase (GST). In addition, PTGIS was shown to bind synthetic peptides corresponding to sequences of for GSTA1, GSTM1, aldo-keto reductase (AKR1A1), glutaredoxin 3 (GLRX3) and histidine triad nucleotide binding protein 2 (HINT2). Prostacyclin synthase could potentially be involved in functional interactions with identified novel protein partners participating in iron and heme metabolism, oxidative stress, xenobiotic and drugs metabolism, glutathione and prostaglandin metabolism. The possible biological role of the recognized interaction is discussed in the context of PTGIS functioning.
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Affiliation(s)
- Pavel V Ershov
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Yuri V Mezentsev
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Arthur T Kopylov
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Evgeniy O Yablokov
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Andrey V Svirid
- Laboratory of Molecular Diagnostics and Biotechnology, Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, 5, bld. 2 V.F. Kuprevich str., 220141 Minsk, Belarus.
| | - Aliaksandr Ya Lushchyk
- Laboratory of Molecular Diagnostics and Biotechnology, Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, 5, bld. 2 V.F. Kuprevich str., 220141 Minsk, Belarus.
| | - Leonid A Kaluzhskiy
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Andrei A Gilep
- Laboratory of Molecular Diagnostics and Biotechnology, Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, 5, bld. 2 V.F. Kuprevich str., 220141 Minsk, Belarus.
| | - Sergey A Usanov
- Laboratory of Molecular Diagnostics and Biotechnology, Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, 5, bld. 2 V.F. Kuprevich str., 220141 Minsk, Belarus.
| | - Alexey E Medvedev
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
| | - Alexis S Ivanov
- Department of Proteomic Research and Mass Spectrometry, Institute of Biomedical Chemistry (IBMC), 10 Pogodinskaya str., 119121 Moscow, Russia.
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Ershov PV, Yablokov ЕO, Florinskaya AV, Mezentsev YV, Kaluzhskiy LА, Tumilovich AM, Gilep АА, Usanov SA, Ivanov АS. SPR-Based study of affinity of cytochrome P450s / redox partners interactions modulated by steroidal substrates. J Steroid Biochem Mol Biol 2019; 187:124-129. [PMID: 30468857 DOI: 10.1016/j.jsbmb.2018.11.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/26/2018] [Accepted: 11/19/2018] [Indexed: 11/29/2022]
Abstract
The goal of this work was to test the hypothesis that the affinity of protein-protein interactions in the cytochrome P450-dependent monooxygenase system is modulated by the low-molecular-weight compounds (substrates or inhibitors). The surface plasmon resonance (SPR) based study was carried out using the recombinant protein preparations of three microsomal cytochromes P450 (CYP17A1, CYP21A2, and CYP2C19) and their redox partners: cytochrome b5 (CYB5A), NADPH - cytochrome P450 reductase (CPR), and also iron-sulfur protein adrenodoxin (Adx). As a result, we have revealed some specificity of the influence of the steroid substrates on the binding affinity of CYPs with their redox partners, namely: the lack of effect on CPR/CYPs and Adx/CYP complex formation, and a significant effect on interactions between CYB5A and steroidogenic CYPs. The equilibrium dissociation constant (Kd) value of the CYB5A/CYP17A1 complex decreased by 5 times in the presence of progesterone (P4), which was due to a 10 times increase in the association rate constant (kon). In this case, a twofold increase in the dissociation rate constant (koff) value of CYB5A/CYP17A1 complex formation was observed. It was also demonstrated that the affinity of CYB5A/CYP17A1 interaction increased in the presence of two other steroidal substrates 17α-hydroxyprogesterone and pregnenolone and that effect was comparable with P4. In contrast, only the twofold decrease in the affinity of CYB5A/CYP21A2 interaction in the presence of P4 was caused by a slight increase in the koff value (the kon value of the complex did not change). This indicates a different format of the steroidal substrates effects expressed in a change in the stability of the CYB5A/CYPs complexes. Thus, it was found that P4 modulated the both kinetic and equilibrium constants of CYB5A/CYP17A1 and CYB5/CYP21A2 complex formation and complexes, while not affecting the CYB5A/CYP2C19 interaction (2C19 is the cytochrome P450 isoenzyme possessing broad substrate specificity), thereby indicating a specific influence of steroidal substrates on interactions involving steroidogenic CYPs. Our results are consistent with current understanding of the role of CYB5A as a regulator of cytochrome P450 activity in P450-dependent monooxygenase system.
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Affiliation(s)
- P V Ershov
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia.
| | - Е O Yablokov
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia
| | - A V Florinskaya
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia
| | - Yu V Mezentsev
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia
| | - L А Kaluzhskiy
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia
| | - A M Tumilovich
- Institute of Bioorganic Chemistry National Academy of Science of Belarus, 220141, Minsk, Kuprevicha str. 5/2, Belarus
| | - А А Gilep
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia; Institute of Bioorganic Chemistry National Academy of Science of Belarus, 220141, Minsk, Kuprevicha str. 5/2, Belarus
| | - S A Usanov
- Institute of Bioorganic Chemistry National Academy of Science of Belarus, 220141, Minsk, Kuprevicha str. 5/2, Belarus
| | - А S Ivanov
- Federal State Budgetary Institution "V.N. Orekhovich Research Institute of Biomedical Chemistry", 119121, Moscow, Pogodinskaya str. 10, building 8, Russia
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Ershov PV, Mezentsev YV, Yablokov EO, Kaluzhskiy LA, Florinskaya AV, Svirid AV, Gilep AA, Usanov SA, Medvedev AE, Ivanov AS. Specificity of Isatin Interaction with Cytochromes P450. BIOCHEMISTRY (MOSCOW), SUPPLEMENT SERIES B: BIOMEDICAL CHEMISTRY 2018. [DOI: 10.1134/s1990750818020026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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