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Benchoam D, Cuevasanta E, Roman JV, Banerjee R, Alvarez B. Acidity of persulfides and its modulation by the protein environments in sulfide quinone oxidoreductase and thiosulfate sulfurtransferase. J Biol Chem 2024; 300:107149. [PMID: 38479599 PMCID: PMC11039317 DOI: 10.1016/j.jbc.2024.107149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/12/2024] [Accepted: 02/28/2024] [Indexed: 04/23/2024] Open
Abstract
Persulfides (RSSH/RSS-) participate in sulfur metabolism and are proposed to transduce hydrogen sulfide (H2S) signaling. Their biochemical properties are poorly understood. Herein, we studied the acidity and nucleophilicity of several low molecular weight persulfides using the alkylating agent, monobromobimane. The different persulfides presented similar pKa values (4.6-6.3) and pH-independent rate constants (3.2-9.0 × 103 M-1 s-1), indicating that the substituents in persulfides affect properties to a lesser extent than in thiols because of the larger distance to the outer sulfur. The persulfides had higher reactivity with monobromobimane than analogous thiols and putative thiols with the same pKa, providing evidence for the alpha effect (enhanced nucleophilicity by the presence of a contiguous atom with high electron density). Additionally, we investigated two enzymes from the human mitochondrial H2S oxidation pathway that form catalytic persulfide intermediates, sulfide quinone oxidoreductase and thiosulfate sulfurtransferase (TST, rhodanese). The pH dependence of the activities of both enzymes was measured using sulfite and/or cyanide as sulfur acceptors. The TST half-reactions were also studied by stopped-flow fluorescence spectroscopy. Both persulfidated enzymes relied on protonated groups for reaction with the acceptors. Persulfidated sulfide quinone oxidoreductase appeared to have a pKa of 7.8 ± 0.2. Persulfidated TST presented a pKa of 9.38 ± 0.04, probably due to a critical active site residue rather than the persulfide itself. The TST thiol reacted in the anionic state with thiosulfate, with an apparent pKa of 6.5 ± 0.1. Overall, our study contributes to a fundamental understanding of persulfide properties and their modulation by protein environments.
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Affiliation(s)
- Dayana Benchoam
- Laboratorio de Enzimología, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay; Graduate Program in Chemistry, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Ernesto Cuevasanta
- Laboratorio de Enzimología, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay; Unidad de Bioquímica Analítica, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Joseph V Roman
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Ruma Banerjee
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Beatriz Alvarez
- Laboratorio de Enzimología, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay.
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Al‐Dahmani ZM, Hadian M, Ruiz‐Moreno AJ, Maria SA, Batista FA, Zhang R, Luo Y, Sadremomtaz A, van der Straat R, Spoor M, Dolga AM, Dekker FJ, S S AD, van Goor H, Groves MR. Identification and characterization of a small molecule that activates thiosulfate sulfurtransferase and stimulates mitochondrial respiration. Protein Sci 2023; 32:e4794. [PMID: 37800277 PMCID: PMC10594923 DOI: 10.1002/pro.4794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/10/2023] [Accepted: 09/24/2023] [Indexed: 10/07/2023]
Abstract
The enzyme Thiosulfate sulfurtransferase (TST, EC 2.8.1.1), is a positive genetic predictor of diabetes type 2 and obesity. As increased TST activity protects against the development of diabetic symptoms in mice, an activating compound for TST may provide therapeutic benefits in diabetes and obesity. We identified a small molecule activator of human TST through screening of an inhouse small molecule library. Kinetic studies in vitro suggest that two distinct isomers of the compound are required for full activation as well as an allosteric mode of activation. Additionally, we studied the effect of TST protein and the activator on TST activity through mitochondrial respiration. Molecular docking and molecular dynamics (MD) approaches supports an allosteric site for the binding of the activator, which is supported by the lack of activation in the Escherichia coli. mercaptopyruvate sulfurtransferase. Finally, we show that increasing TST activity in isolated mitochondria increases mitochondrial oxygen consumption.
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Affiliation(s)
- Zeyana M. Al‐Dahmani
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
| | - Mojgan Hadian
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Angel J. Ruiz‐Moreno
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | | | - Fernando A. Batista
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of Microbiology StructureInstitute of PasteurParisFrance
| | - Ran Zhang
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Yang Luo
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
- Department of Pharmacy, Molecular PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Afsaneh Sadremomtaz
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
- Department of NanoengineeringUniversity of North Carolina Agriculture and Technical StateGreensboroNorth CarolinaUSA
- Department of NanoengineeringJoint School of Nanoscience and NanoengineeringGreensboroNorth CarolinaUSA
| | - Robin van der Straat
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Mette Spoor
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Amalia M. Dolga
- Department of Pharmacy, Molecular PharmacologyUniversity of GroningenGroningenThe Netherlands
| | - Frank J. Dekker
- Department of Pharmaceutical Gene ModulationUniversity of GroningenGroningenThe Netherlands
| | - Alexander Dömling S S
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Harry van Goor
- Department of Pathology and Medical BiologyUniversity Medical Center GroningenGroningenThe Netherlands
| | - Matthew R. Groves
- Department of Pharmacy and Drug DesignUniversity of GroningenGroningenThe Netherlands
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Abstract
We have been studying the general aspects of the functions of H2S and polysulfides, and the enzymes involved in their biosynthesis, for more than 20 years. Our aim has been to elucidate novel physiological and pathological functions of H2S and polysulfides, and unravel the regulation of the enzymes involved in their biosynthesis, including cystathionine β-synthase (EC 4.2.1.22), cystathionine γ-lyase (EC 4.4.1.1), thiosulfate sulfurtransferase (rhodanese, EC 2.8.1.1), and 3-mercaptopyruvate sulfurtransferase (EC 2.8.1.2). Physiological and pathological functions, alternative biosynthetic processes, and additional functions of H2S and polysulfides have been reported. Further, the structure and reaction mechanisms of related enzymes have also been reported. We expect this issue to advance scientific knowledge regarding the detailed functions of H2S and polysulfides as well as the general properties and regulation of the enzymes involved in their metabolism. We would like to cover four topics: the physiological and pathological functions of H2S and polysulfides, the mechanisms of the biosynthesis of H2S and polysulfides, the properties of the biosynthetic enzymes, and the regulation of enzymatic activity. The knockout mouse technique is a useful tool to determine new physiological functions, especially those of H2S and polysulfides. In the future, we shall take a closer look at symptoms in the human congenital deficiency of each enzyme. Further studies on the regulation of enzymatic activity by in vivo substances may be the key to finding new functions of H2S and polysulfides.
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Affiliation(s)
- Noriyuki Nagahara
- Nippon Medical School, Isotope Research Institute, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
- Correspondence: (N.N.); (M.W.); Tel.: +81-3-3822-2131 (N.N.); +48-12-4227400 (M.W.)
| | - Maria Wróbel
- Faculty of Medicine, Jagiellonian University Medical College, Kopernika 7 Cracow, 31-034 Krakow, Poland
- Correspondence: (N.N.); (M.W.); Tel.: +81-3-3822-2131 (N.N.); +48-12-4227400 (M.W.)
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Akahoshi N, Minakawa T, Miyashita M, Sugiyama U, Saito C, Takemoto R, Honda A, Kamichatani W, Kamata S, Anan Y, Ishii I. Increased Urinary 3-Mercaptolactate Excretion and Enhanced Passive Systemic Anaphylaxis in Mice Lacking Mercaptopyruvate Sulfurtransferase, a Model of Mercaptolactate-Cysteine Disulfiduria. Int J Mol Sci 2020; 21:ijms21030818. [PMID: 32012740 PMCID: PMC7038117 DOI: 10.3390/ijms21030818] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/24/2020] [Accepted: 01/25/2020] [Indexed: 12/19/2022] Open
Abstract
Mercaptopyruvate sulfurtransferase (Mpst) and its homolog thiosulfate sulfurtransferase (Tst = rhodanese) detoxify cyanide to thiocyanate. Mpst is attracting attention as one of the four endogenous hydrogen sulfide (H2S)/reactive sulfur species (RSS)-producing enzymes, along with cystathionine β-synthase (Cbs), cystathionine γ-lyase (Cth), and cysteinyl-tRNA synthetase 2 (Cars2). MPST deficiency was found in 1960s among rare hereditary mercaptolactate-cysteine disulfiduria patients. Mpst-knockout (KO) mice with enhanced liver Tst expression were recently generated as its model; however, the physiological roles/significances of Mpst remain largely unknown. Here we generated three independent germ lines of Mpst-KO mice by CRISPR/Cas9 technology, all of which maintained normal hepatic Tst expression/activity. Mpst/Cth-double knockout (DKO) mice were generated via crossbreeding with our previously generated Cth-KO mice. Mpst-KO mice were born at the expected frequency and developed normally like Cth-KO mice, but displayed increased urinary 3-mercaptolactate excretion and enhanced passive systemic anaphylactic responses when compared to wild-type or Cth-KO mice. Mpst/Cth-DKO mice were also born at the expected frequency and developed normally, but excreted slightly more 3-mercaptolactate in urine compared to Mpst-KO or Cth-KO mice. Our Mpst-KO, Cth-KO, and Mpst/Cth-DKO mice, unlike semi-lethal Cbs-KO mice and lethal Cars2-KO mice, are useful tools for analyzing the unknown physiological roles of endogenous H2S/RSS production.
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Witholt SJ, Sankaranarayanan R, Garen CR, Cherney MM, Cherney LT, James MNG. Expression, purification, crystallization and preliminary X-ray analysis of Rv3117, a probable thiosulfate sulfurtransferase (CysA3) from Mycobacterium tuberculosis. Acta Crystallogr Sect F Struct Biol Cryst Commun 2008; 64:541-4. [PMID: 18540071 PMCID: PMC2496863 DOI: 10.1107/s1744309108014449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Accepted: 05/13/2008] [Indexed: 05/26/2023]
Abstract
The gene product of open reading frame Rv3117 from Mycobacterium tuberculosis (Mtb) strain H37Rv is annotated as encoding a probable rhodanese-like thiosulfate sulfurtransferase (MtbCysA3). MtbCysA3 was expressed and purified and then crystallized using the sitting-drop vapour-diffusion method. X-ray diffraction data were collected and processed to a maximum resolution of 2.5 A. The crystals belong to the monoclinic space group P2(1), with unit-cell parameters a = 38.86, b = 91.43, c = 83.57 A, beta = 96.6 degrees . Preliminary diffraction data shows that two molecules are present in the asymmetric unit; this corresponds to a V(M) of 2.4 A(3) Da(-1).
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Affiliation(s)
- Sarah J. Witholt
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Ramasamy Sankaranarayanan
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Craig R. Garen
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Maia M. Cherney
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Leonid T. Cherney
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Michael N. G. James
- Protein Structure and Function Group, Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
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