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Liao H, Pan H, Yao J, Zhu R, Bao W. Essential amino acid residues and catalytic mechanism of trans-epoxysuccinate hydrolase for production of meso-tartaric acid. Biotechnol Lett 2024:10.1007/s10529-024-03490-3. [PMID: 38740717 DOI: 10.1007/s10529-024-03490-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/17/2024] [Accepted: 04/14/2024] [Indexed: 05/16/2024]
Abstract
OBJECTIVES This study aimed to discuss the essential amino acid residues and catalytic mechanism of trans-epoxysuccinate hydrolase from Pseudomonas koreensis for the production of meso-tartaric acid. RESULTS The optimum conditions of the enzyme were 45 °C and pH 9.0, respectively. It was strongly inhibited by Zn2+, Mn2+ and SDS. Michaelis-Menten enzyme kinetics analysis gave a Km value of 3.50 mM and a kcat of 99.75 s-1, with an exceptional EE value exceeding 99.9%. Multiple sequence alignment and homology modeling revealed that the enzyme belonged to MhpC superfamily and possessed a typical α/β hydrolase folding structure. Site-directed mutagenesis indicated H34, D104, R105, R108, D128, Y147, H149, W150, Y211, and H272 were important catalytic residues. The 18O-labeling study suggested the enzyme acted via two-step catalytic mechanism. CONCLUSIONS The structure and catalytic mechanism of trans-epoxysuccinate hydrolase were first reported. Ten residues were critical for its catalysis and a two-step mechanism by an Asp-His-Asp catalytic triad was proposed.
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Affiliation(s)
- Hongxiu Liao
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | | | - Jinfeng Yao
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Ronglin Zhu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Wenna Bao
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China.
- Zhejiang Provincial Key Laboratory for Chemical and Biological Processing Technology of Farm Products, Hangzhou, 310023, China.
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Xu Y, Shen Y, Du C, Liu L, Wu H, Ji Q. Spiro[benzoxazine-piperidin]-one derivatives as chitin synthase inhibitors and antifungal agents: Design, synthesis and biological evaluation. Eur J Med Chem 2022; 243:114723. [DOI: 10.1016/j.ejmech.2022.114723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/04/2022]
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Nagy L, Béke F, Juhász L, Kovács T, Juhász-Tóth É, Docsa T, Tóth A, Gergely P, Somsák L, Bai P. Glycogen phosphorylase inhibitor, 2,3-bis[(2E)-3-(4-hydroxyphenyl)prop-2-enamido] butanedioic acid (BF142), improves baseline insulin secretion of MIN6 insulinoma cells. PLoS One 2020; 15:e0236081. [PMID: 32960890 PMCID: PMC7508380 DOI: 10.1371/journal.pone.0236081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 06/30/2020] [Indexed: 12/17/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM), one of the most common metabolic diseases, is characterized by insulin resistance and inadequate insulin secretion of β cells. Glycogen phosphorylase (GP) is the key enzyme in glycogen breakdown, and contributes to hepatic glucose production during fasting or during insulin resistance. Pharmacological GP inhibitors are potential glucose lowering agents, which may be used in T2DM therapy. A natural product isolated from the cultured broth of the fungal strain No. 138354, called 2,3-bis(4-hydroxycinnamoyloxy)glutaric acid (FR258900), was discovered a decade ago. In vivo studies showed that FR258900 significantly reduced blood glucose levels in diabetic mice. We previously showed that GP inhibitors can potently enhance the function of β cells. The purpose of this study was to assess whether an analogue of FR258900 can influence β cell function. BF142 (Meso-Dimethyl 2,3-bis[(E)-3-(4-acetoxyphenyl)prop-2-enamido]butanedioate) treatment activated the glucose-stimulated insulin secretion pathway, as indicated by enhanced glycolysis, increased mitochondrial oxidation, significantly increased ATP production, and elevated calcium influx in MIN6 cells. Furthermore, BF142 induced mTORC1-specific phosphorylation of S6K, increased levels of PDX1 and insulin protein, and increased insulin secretion. Our data suggest that BF142 can influence β cell function and can support the insulin producing ability of β cells.
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Affiliation(s)
- Lilla Nagy
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ferenc Béke
- Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - László Juhász
- Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Tünde Kovács
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Éva Juhász-Tóth
- Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Tibor Docsa
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Tóth
- Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Pál Gergely
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - László Somsák
- Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Péter Bai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- MTA-DE Lendület Laboratory of Cellular Metabolism, Debrecen, Hungary
- Research Center for Molecular Medicine, University of Debrecen, Debrecen, Hungary
- * E-mail:
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Li B, Wang K, Zhang R, Li B, Shen Y, Ji Q. Design, synthesis and biological evaluation of novel diazaspiro[4.5]decan-1-one derivatives as potential chitin synthase inhibitors and antifungal agents. Eur J Med Chem 2019; 182:111669. [DOI: 10.1016/j.ejmech.2019.111669] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/16/2019] [Accepted: 08/30/2019] [Indexed: 01/18/2023]
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Spasov AA, Chepljaeva NI, Vorob’ev ES. Glycogen phosphorylase inhibitors in the regulation of carbohydrate metabolism in type 2 diabetes. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1068162016020138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Juhász L, Varga G, Sztankovics A, Béke F, Docsa T, Kiss-Szikszai A, Gergely P, Kóňa J, Tvaroška I, Somsák L. Structure-Activity Relationships of Glycogen Phosphorylase Inhibitor FR258900 and Its Analogues: A Combined Synthetic, Enzyme Kinetics, and Computational Study. Chempluschem 2014. [DOI: 10.1002/cplu.201402181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Nagy L, Docsa T, Szántó M, Brunyánszki A, Hegedűs C, Márton J, Kónya B, Virág L, Somsák L, Gergely P, Bai P. Glycogen phosphorylase inhibitor N-(3,5-dimethyl-Benzoyl)-N'-(β-D-glucopyranosyl)urea improves glucose tolerance under normoglycemic and diabetic conditions and rearranges hepatic metabolism. PLoS One 2013; 8:e69420. [PMID: 23936011 PMCID: PMC3723905 DOI: 10.1371/journal.pone.0069420] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 06/10/2013] [Indexed: 12/22/2022] Open
Abstract
Glycogen phosphorylase (GP) catalyzes the breakdown of glycogen and largely contributes to hepatic glucose production making GP inhibition an attractive target to modulate glucose levels in diabetes. Hereby we present the metabolic effects of a novel, potent, glucose-based GP inhibitor (KB228) tested in vitro and in vivo under normoglycemic and diabetic conditions. KB228 administration enhanced glucose sensitivity in chow-fed and obese, diabetic mice that was a result of higher hepatic glucose uptake. Besides improved glucose sensitivity, we have observed further unexpected metabolic rearrangements. KB228 administration increased oxygen consumption that was probably due to the overexpression of uncoupling protein-2 (UCP2) that was observed in animal and cellular models. Furthermore, KB228 treatment induced mammalian target of rapamycin complex 2 (mTORC2) in mice. Our data demonstrate that glucose based GP inhibitors are capable of reducing glucose levels in mice under normo and hyperglycemic conditions. Moreover, these GP inhibitors induce accommodation in addition to GP inhibition - such as enhanced mitochondrial oxidation and mTORC2 signaling – to cope with the glucose influx and increased glycogen deposition in the cells, however the molecular mechanism of accommodation is unexplored.
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Affiliation(s)
- Lilla Nagy
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
| | - Tibor Docsa
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
| | - Magdolna Szántó
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
- Cell Biology and Signaling Research Group of the Hungarian Academy of Sciences, Debrecen, Hungary
| | - Attila Brunyánszki
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
| | - Csaba Hegedűs
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
| | - Judit Márton
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
| | - Bálint Kónya
- Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary
| | - László Virág
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
- Cell Biology and Signaling Research Group of the Hungarian Academy of Sciences, Debrecen, Hungary
| | - László Somsák
- Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary
| | - Pál Gergely
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
- Cell Biology and Signaling Research Group of the Hungarian Academy of Sciences, Debrecen, Hungary
| | - Péter Bai
- Department of Medical Chemistry, University of Debrecen Medical and Health Science Center, Debrecen, Hungary
- Cell Biology and Signaling Research Group of the Hungarian Academy of Sciences, Debrecen, Hungary
- * E-mail:
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