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Shang W, Li Y, Huang H, Lai F, Roeffaers MBJ, Weng B. Synergistic Redox Reaction for Value-Added Organic Transformation via Dual-Functional Photocatalytic Systems. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04815] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Weike Shang
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, No. 58, YanTa Road, Xi’an 710054, People’s Republic of China
| | - Yuangang Li
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, No. 58, YanTa Road, Xi’an 710054, People’s Republic of China
| | - Haowei Huang
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Feili Lai
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Maarten B. J. Roeffaers
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Bo Weng
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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2
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Senkała S, Małecki JG, Vasylieva M, Łabuz A, Nosek K, Piwowarczyk K, Czyż J, Schab-Balcerzak E, Janeczek H, Korzec M. Hydrolysis of Schiff bases with phenyl-ethynyl-phenyl system: The importance for biological and physicochemical studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 212:112020. [PMID: 32957072 DOI: 10.1016/j.jphotobiol.2020.112020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 08/08/2020] [Accepted: 09/07/2020] [Indexed: 12/11/2022]
Abstract
A series of new Schiff bases containing the phenyl-ethynyl-phenyl system was synthesized and their thermal stability, photophysical and electrochemical properties were investigated. Moreover, DFT calculations were performed to obtain the optimized ground-state geometry and distribution of the HOMO and LUMO levels as well as IR spectra of the prepared compounds. It was found that, the photoluminescence of synthesized imines was negligible in all investigated organic solvents except for the PBS/ACN mixture. As was proved in further studies, this phenomenon was related to the partial hydrolysis of imines, which is the source of the fluorogenic aldehyde causing the aggreggacion incrased-emision effect. In further research, due to the susceptibility of the azomethines to partial hydrolysis, the biological activity of 2-{(E)-[4-(phenylethynyl) phenyl]imino}phenol (1b), substrate (2-aminophenol) and Cu(II)-1b complex was analyzed. The biological tests showed, that 1b (as example of imine resveratrol analogue), demonstrated its increased cytostatic activity in prostate cancer cellular system. It was proved that the non-hydrolyzed imine was crucial for the cytotoxic effect. This activity could be ascribed to its Cu(II) complexing capability as showed in our previous research.
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Affiliation(s)
- Sandra Senkała
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Jan Grzegorz Małecki
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland
| | - Marharyta Vasylieva
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland; Silesian University of Technology, Faculty of Chemistry, Department of Physical Chemistry and Technology of Polymers, Strzody 9 44-100, Gliwice, Poland
| | - Aleksandra Łabuz
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Cracow, Poland
| | - Katarzyna Nosek
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Cracow, Poland
| | - Katarzyna Piwowarczyk
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Cracow, Poland
| | - Jarosław Czyż
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Cracow, Poland
| | - Ewa Schab-Balcerzak
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland
| | - Mateusz Korzec
- Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland.
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3
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Lence E, Maneiro M, Sanz‐Gaitero M, Raaij MJ, Thompson P, Hawkins AR, González‐Bello C. Self‐Immolation of a Bacterial Dehydratase Enzyme by its Epoxide Product. Chemistry 2020; 26:8035-8044. [DOI: 10.1002/chem.202000759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Emilio Lence
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Jenaro de la Fuente s/n 15782 Santiago de Compostela Spain
| | - María Maneiro
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Jenaro de la Fuente s/n 15782 Santiago de Compostela Spain
| | - Marta Sanz‐Gaitero
- Departamento de Estructura de MacromoléculasCentro Nacional de Biotecnología (CSIC) Campus Cantoblanco 28049 Madrid Spain
| | - Mark J. Raaij
- Departamento de Estructura de MacromoléculasCentro Nacional de Biotecnología (CSIC) Campus Cantoblanco 28049 Madrid Spain
| | - Paul Thompson
- Newcastle University Biosciences InstituteThe Medical SchoolNewcastle University Framlington Place Newcastle upon Tyne NE2 4HH UK
| | - Alastair R. Hawkins
- Newcastle University Biosciences InstituteThe Medical SchoolNewcastle University Framlington Place Newcastle upon Tyne NE2 4HH UK
| | - Concepción González‐Bello
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Jenaro de la Fuente s/n 15782 Santiago de Compostela Spain
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4
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Photocatalytic synthesis of Schiff base compounds in the coupled system of aromatic alcohols and nitrobenzene using CdXZn1−XS photocatalysts. J Catal 2018. [DOI: 10.1016/j.jcat.2017.12.025] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Specific chemical modification of bacterial type I dehydroquinase – opportunities for drug discovery. Future Med Chem 2015; 7:2371-83. [DOI: 10.4155/fmc.15.145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Type I dehydroquinase (DHQ1) is a class I aldolase enzyme that catalyzes the reversible dehydration of 3-dehydroquinic acid to form 3-dehydroshikimic acid by multistep mechanism that involves the formation of Schiff-base species. DHQ1 is present in plants and several bacterial sources but it does not have any counterpart in human cells. It has been suggested that DHQ1 may act as a virulence factor in vivo and therefore a promising target in the search for new antivirulence agents to combat widespread antibiotic resistance. This review covers recent progress in the structure-based design and chemical modifications caused by selective irreversible inhibitors. Computational studies aimed at understanding the experimentally obtained covalent modifications and inhibitory potencies of these inhibitors are also described.
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Chen BS, Otten LG, Hanefeld U. Stereochemistry of enzymatic water addition to C=C bonds. Biotechnol Adv 2015; 33:526-46. [PMID: 25640045 DOI: 10.1016/j.biotechadv.2015.01.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/09/2015] [Accepted: 01/09/2015] [Indexed: 12/20/2022]
Abstract
Water addition to carbon-carbon double bonds using hydratases is attracting great interest in biochemistry. Most of the known hydratases are involved in primary metabolism and to a lesser extent in secondary metabolism. New hydratases have recently been added to the toolbox, both from natural sources or artificial metalloenzymes. In order to comprehensively understand how the hydratases are able to catalyse the water addition to carbon-carbon double bonds, this review will highlight the mechanistic and stereochemical studies of the enzymatic water addition to carbon-carbon double bonds, focusing on the syn/anti-addition and stereochemistry of the reaction.
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Affiliation(s)
- Bi-Shuang Chen
- Biokatalyse, Gebouw voor Scheikunde, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Linda G Otten
- Biokatalyse, Gebouw voor Scheikunde, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Ulf Hanefeld
- Biokatalyse, Gebouw voor Scheikunde, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628 BL Delft, The Netherlands.
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Tizón L, Maneiro M, Peón A, Otero JM, Lence E, Poza S, van Raaij MJ, Thompson P, Hawkins AR, González-Bello C. Irreversible covalent modification of type I dehydroquinase with a stable Schiff base. Org Biomol Chem 2015; 13:706-16. [DOI: 10.1039/c4ob01782j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural and computational studies carried out with two epoxides provide insight into the irreversible inhibition of type I dehydroquinase.
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Affiliation(s)
- Lorena Tizón
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - María Maneiro
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Antonio Peón
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - José M. Otero
- Departamento de Bioquímica y Biología Molecular and CIQUS
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Emilio Lence
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Sergio Poza
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Mark J. van Raaij
- Departamento de Estructura de Macromoléculas
- Centro Nacional de Biotecnología (CSIC)
- 28049 Madrid
- Spain
| | - Paul Thompson
- Institute of Cell and Molecular Biosciences
- Medical School
- University of Newcastle upon Tyne
- Newcastle upon Tyne NE2 4HH
- UK
| | - Alastair R. Hawkins
- Institute of Cell and Molecular Biosciences
- Medical School
- University of Newcastle upon Tyne
- Newcastle upon Tyne NE2 4HH
- UK
| | - Concepción González-Bello
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS)
- Universidad de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
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8
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Insights into substrate binding and catalysis in bacterial type I dehydroquinase. Biochem J 2014; 462:415-24. [DOI: 10.1042/bj20140614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The crystal structure of S. typhi type I dehydroquinase in complex with (2R)-3-methyl-3-dehydroquinic acid is described. A previously unknown key role of several conserved residues and a detailed knowledge of the substrate binding process is detailed.
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Light SH, Antanasijevic A, Krishna SN, Caffrey M, Anderson WF, Lavie A. Crystal structures of type I dehydroquinate dehydratase in complex with quinate and shikimate suggest a novel mechanism of Schiff base formation. Biochemistry 2014; 53:872-80. [PMID: 24437575 PMCID: PMC3985847 DOI: 10.1021/bi4015506] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
![]()
A component of the shikimate biosynthetic
pathway, dehydroquinate
dehydratase (DHQD) catalyzes the dehydration of 3-dehydroquniate (DHQ)
to 3-dehydroshikimate. In the type I DHQD reaction mechanism a lysine
forms a Schiff base intermediate with DHQ. The Schiff base acts as
an electron sink to facilitate the catalytic dehydration. To address
the mechanism of Schiff base formation, we determined structures of
the Salmonella enterica wild-type DHQD in complex
with the substrate analogue quinate and the product analogue shikimate.
In addition, we determined the structure of the K170M mutant (Lys170
being the Schiff base forming residue) in complex with quinate. Combined
with nuclear magnetic resonance and isothermal titration calorimetry
data that revealed altered binding of the analogue to the K170M mutant,
these structures suggest a model of Schiff base formation characterized
by the dynamic interplay of opposing forces acting on either side
of the substrate. On the side distant from the substrate 3-carbonyl
group, closure of the enzyme’s β8−α8 loop
is proposed to guide DHQ into the proximity of the Schiff base-forming
Lys170. On the 3-carbonyl side of the substrate, Lys170 sterically
alters the position of DHQ’s reactive ketone, aligning it at
an angle conducive for nucleophilic attack. This study of a type I
DHQD reveals the interplay between the enzyme and substrate required
for the correct orientation of a functional group constrained within
a cyclic substrate.
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Affiliation(s)
- Samuel H Light
- Center for Structural Genomics of Infectious Diseases and Department of Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University , Chicago, Illinois 60611, United States
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Light SH, Anderson WF, Lavie A. Reassessing the type I dehydroquinate dehydratase catalytic triad: kinetic and structural studies of Glu86 mutants. Protein Sci 2013; 22:418-24. [PMID: 23341204 DOI: 10.1002/pro.2218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 01/07/2013] [Accepted: 01/09/2013] [Indexed: 11/10/2022]
Abstract
Dehydroquinate dehydratase (DHQD) catalyzes the third reaction in the biosynthetic shikimate pathway. Type I DHQDs are members of the greater aldolase superfamily, a group of enzymes that contain an active site lysine that forms a Schiff base intermediate. Three residues (Glu86, His143, and Lys170 in the Salmonella enterica DHQD) have previously been proposed to form a triad vital for catalysis. While the roles of Lys170 and His143 are well defined-Lys170 forms the Schiff base with the substrate and His143 shuttles protons in multiple steps in the reaction-the role of Glu86 remains poorly characterized. To probe Glu86's role, Glu86 mutants were generated and subjected to biochemical and structural study. The studies presented here demonstrate that mutant enzymes retain catalytic proficiency, calling into question the previously attributed role of Glu86 in catalysis and suggesting that His143 and Lys170 function as a catalytic dyad. Structures of the Glu86Ala (E86A) mutant in complex with covalently bound reaction intermediate reveal a conformational change of the His143 side chain. This indicates a predominant steric role for Glu86, to maintain the His143 side chain in position consistent with catalysis. The structures also explain why the E86A mutant is optimally active at more acidic conditions than the wild-type enzyme. In addition, a complex with the reaction product reveals a novel, likely nonproductive, binding mode that suggests a mechanism of competitive product inhibition and a potential strategy for the design of therapeutics.
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Affiliation(s)
- Samuel H Light
- Center for Structural Genomics of Infectious Diseases and Department of Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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