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Selvakumaran B, Murali M, Shanmugavadivel S, Sindhuja V, Sathya V. Impressive promiscuous biomimetic models of ascorbate, amine, and catechol oxidases. J Inorg Biochem 2024; 259:112671. [PMID: 39059176 DOI: 10.1016/j.jinorgbio.2024.112671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/14/2024] [Accepted: 07/21/2024] [Indexed: 07/28/2024]
Abstract
Copper metalloenzymes ascorbate oxidase (AOase), amine oxidase (AmOase), and catechol oxidase (COase) possess copper(II) sites of coordination, which are trimeric, homodimeric, and dimeric, respectively. Two newly mononuclear copper(II) complexes, namely, [Cu(L)(bpy)](ClO4) (1) and [Cu(L)(phen)](ClO4) (2) where HL = Schiff base, have been synthesized. UV-visible, EPR and single-crystal X-ray diffraction examinations were used to validate the geometry in solution and solid state. For complex 1, the metal exhibits a coordination sphere between square pyramidal and trigonal bipyramidal geometry (τ, 0.49). A positive CuII/I redox potential indicates a stable switching between CuII and CuI redox states. Despite the monomeric origin, both homogeneous catalysts (1 or 2) in MeOH were found to favor three distinct chemical transformations, namely, ascorbic acid (H2A) to dehydroascorbic acid (DA), benzylamine (Ph-CH2-NH2) to benzaldehyde (Ph-CHO), and 3,5-di-tert-butylcatechol (3,5-DTBC) to 3,5-di-tert-butylquinone (3,5-DTBQ) [kcat: AOase, 9.6 (1) or 2.0 × 106 h-1(2); AmOase, 13.4 (1) or 9.4 × 106 h-1 (2); COase, 2.0 (1) or 1.9 × 103 h-1 (2)]. They exhibit higher levels of AOase activity as indicated by their kcat values compared to the AOase enzyme. The kcat values for COase activity in buffer solution [5.93 (1) or 2.95 × 105 h-1 (2)] are one order lower than those of the enzymes. This is because of the labile nature of the coordinated donor, the flexibility of the ligand, the simplicity of the catalyst-substrate interaction, and the positive CuII/I redox potential. Interestingly, more efficient catalysis is promoted by 1 and 2 concerning that of other mono- and dicopper(II) complexes.
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Affiliation(s)
- Balasubramaniam Selvakumaran
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Mariappan Murali
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India.
| | - Selvaraj Shanmugavadivel
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Venkatesan Sindhuja
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Velusamy Sathya
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
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Adach A, Tyszka-Czochara M, Daszkiewicz M. An efficient one-pot synthesis of pyrazole complexes formed in situ: synthesis, crystal structure, Hirshfeld surface analysis and in vitro biological properties. Acta Crystallogr C Struct Chem 2023; 79:520-529. [PMID: 38032219 DOI: 10.1107/s2053229623010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023] Open
Abstract
The molecular crystals of monomeric and dimeric pyrazole complexes were prepared via one-pot syntheses. These are dichloridobis(3,5-dimethyl-1H-pyrazole-κN1)cobalt/zinc(0.2/0.8), [Co0.20Zn0.80Cl2(C5H8N2)2] or [Co0.2Zn0.8Cl2(3,5-dmp)2] (1), and bis(μ-3,5-dimethyl-1H-pyrazole)-κ2N1:N2;κ2N2:N1-bis[bromido/chlorido(0.7/0.3)bis(3,5-dimethyl-1H-pyrazole-κN1)cobalt/zinc(0.1/0.9)], [Co0.20Zn1.80Br1.40Cl0.60(C5H7N2)2(C5H8N2)2] or [Co0.1Zn0.9Br0.7Cl0.3(μ-3,5-dmp)(3,5-dmp)]2 (2). The isolated complexes contain 3,5-dimethylpyrazole (3,5-dmp) ligands formed in situ from the decomposition of 1-hydroxymethyl-3,5-dimethylpyrazole. In both isolated complexes, some positional disorder is observed at the metal ions and halogen ligands. The molecular crystals of 1 and 2 are centrosymmetric, with the space groups C2/c and P-1, respectively. Additionally, in the dinuclear complex, the pyrazole ring has a bridging coordination function with respect to the metal ions. Both complexes have good biological activities against cancer cells. The results of an in vitro cytotoxicity study indicated that compounds 1 and 2 showed significant cytotoxicity for cancer cell lines, including hepatic (HepG2 cells), lung (A549 cells) and colon cancer cells (SW 480 and SW 620). Based on the calculated IC50 values against human cancer cell lines, it was found that both complexes demonstrated potent antiproliferative activity combined with great selectivity towards cancer cells. Complex 2 was a more effective cytotoxic agent which, at the same time, exhibited high cytocompatibility. The obtained data are very encouraging and could be useful for anticancer drug discovery.
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Affiliation(s)
- Anna Adach
- Institute of Chemistry, Jan Kochanowski University, 15G Świętokrzyska Str., Kielce 25-406, Poland
| | | | - Marek Daszkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, Wroclaw 50-422, Poland
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Neves A, Tomkowicz Z, Couto RA, Bombazar CC, Amorim SM, Bortoluzzi AJ, Peralta RA. Trinuclear CuII complex containing a new pentadentate ligand: Structure, magnetism, physicochemical properties and catecholase activity. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Jana K, Pramanik U, Ingle KS, Maity R, Mukherjee S, Nayak SK, Chandra Debnath S, Maity T, Maity S, Chandra Samanta B. Copper(II) complexes with NNN and NNO Schiff base ligands as efficient photodegradation agents for methylene blue, preferential BSA binder and biomaterial transplants. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Murali M, Sathya V, Selvakumaran B. Fate of model complexes with monocopper center towards the functional properties of type 2 and type 3 copper oxidases. J Biol Inorg Chem 2021; 26:67-79. [PMID: 33409586 DOI: 10.1007/s00775-020-01837-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/22/2020] [Indexed: 12/27/2022]
Abstract
Green colored mononuclear copper(II) complexes viz. [Cu(L)(bpy)](ClO4) (1) or [Cu(L)(phen)](ClO4) (2) (where H(L) is 2-((2-dimethylamino)ethyliminomethyl)naphthol) show distorted square pyramidal (4 + 1) geometry with CuN4O chromophore. The existence of self-assembled molecular associations indicates the formation of the dimer. Dimeric nature in solution is retained due to the binding of the substrate, encourages steric match between substrate and Cu(II) active site, which favors electron transfer. Interestingly, both the complexes exhibit high-positive redox potential. Therefore, the presence of self-assembled molecular association along with the positive redox potential enhances the catalytic oxidation of ascorbic acid to dehydroascorbic acid or benzylamine to benaldehyde or catechol to o-quinone thereby model the functional properties of type 2 and type 3 copper oxidases. Notably, catalytic activity is effective when compared with other reported mononuclear copper(II) complexes and even superior to many binuclear copper(II) complexes. Existence of self-assembled molecular association in solution along with high-positive redox potential favors electron transfer process in mononuclear copper(II) complexes and models the functional properties of type 2 and type 3 copper oxidases.
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Affiliation(s)
- Mariappan Murali
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli, Tamil Nadu, 620 001, India.
| | - Velusamy Sathya
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli, Tamil Nadu, 620 001, India
| | - Balasubramaniam Selvakumaran
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli, Tamil Nadu, 620 001, India
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Jana K, Maity R, Puschmann H, Mitra A, Ghosh R, Debnath SC, Shukla A, Mahanta AK, Maity T, Samanta BC. A binuclear chloride bridged Cu(II) and a mononuclear Ni(II) complex: Synthesis, crystal structure, photo catalytic and biological studies. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Soliman SM, Elsilk SE, El-Faham A. Synthesis, structure and biological activity of zinc(II) pincer complexes with 2,4-bis(3,5-dimethyl-1H-pyrazol-1-yl)-6-methoxy-1,3,5-triazine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119627] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Soldevila-Sanmartín J, Guerrero M, Choquesillo-Lazarte D, Giner Planas J, Pons J. Dimeric metallacycles and coordination polymers: Zn(II), Cd(II) and Hg(II) complexes of two positional isomers of a flexible N,O-hybrid bispyrazole derived ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Begum K, Begum S, Sheikh C, Miyatake R, Zangrando E. Cis versus trans arrangement of di-thio-carbazate ligands in bis-chelated Ni and Cu complexes. Acta Crystallogr E Crystallogr Commun 2020; 76:692-696. [PMID: 32431934 PMCID: PMC7199265 DOI: 10.1107/s205698902000506x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/09/2020] [Indexed: 11/22/2022]
Abstract
The structures are described of two bis-chelated metal complexes of nickel(II) and copper(II) with S-n-hexyl 3-(1-phenyl-ethyl-idene)di-thio-carbazate Schiff bases in a cis configuration, namely, bis-[S-n-hexyl 3-(1-phenyl-ethyl-idene)di-thio-carbazato-κ2 N 3,S]nickel(II), [Ni(C15H21N2S2)2], and bis-[S-n-hexyl 3-(1-phenyl-ethyl-idene)di-thio-carbazato-κ2 N 3,S]copper(II), [Cu(C15H21N2S2)2]. In both complexes, the metals have distorted square-planar geometries. A search in the Cambridge Structural Database [Groom et al. (2016 ▸). Acta Cryst. B72, 171-179] for bis-chelated nickel(II) and copper(II) complexes with similar Schiff bases retrieved 55 and 36 hits for the two metals, respectively. An analysis of the geometrical parameters of complexes showing cis and trans configurations is reported and the values compared with those for the complexes described in this work.
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Affiliation(s)
- Khurshida Begum
- Department of Physics, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Sabina Begum
- Department of Chemistry, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Chanmiya Sheikh
- Department of Applied Chemistry, Faculty of Engineering, University of Toyama, Gofuku, Toyama 3190, Japan
| | - Ryuta Miyatake
- Center for Environmental Conservation and Research Safety, University of Toyama, Gofuku, Toyama 3190, Japan
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Science, via Giorgieri 1/34127, Trieste, Italy
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Zerrouki A, Abrigach F, Taleb M, El Kadiri S. Design, synthesis, characterization and catechol oxidase activity of novel class of multi-tripodal pyrazole and triazole-based derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-04044-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jana A, Brandão P, Jana H, Jana AD, Mondal G, Bera P, Santra A, Mahapatra AK, Bera P. Synthesis, structure and catalytic promiscuity of a napthyl-pyrazole Mn(II) complex and structure–activity relationships. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1658192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Abhimanyu Jana
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Paula Brandão
- Department of Chemistry, CICECO, University of Aveiro, Aveiro, Portugal
| | - Harekrishna Jana
- Department of Microbiology, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | | | - Gopinath Mondal
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Pradip Bera
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
- Department of Chemistry, Kandi Raj College, Murshidabad, India
| | - Ananyakumari Santra
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Ajit Kumar Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Pulakesh Bera
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
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A highly selective and sensitive sensor with imine and phenyl-ethynyl-phenyl units for the visual and fluorescent detection of copper in water. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111893] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Jana A, Brandão P, Mondal G, Bera P, Santra A, Jana AD, Mokhamatam RB, Manna SK, Bhattacharyya N, Bera P. Synthesis, characterization, cytotoxicity effect and DNA cleavage study of symmetric dinuclear chloro and azido bridged copper(II) complexes of napthyl-pyrazole based ligand. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Synthesis, properties and structure of copper(II) complexes of quinolyl azo derivatives of pyrazole-5-one(thione). Polyhedron 2018. [DOI: 10.1016/j.poly.2018.02.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Synthesis, in vitro evaluation of antibacterial, antifungal and larvicidal activities of pyrazole/pyridine based compounds and their nanocrystalline MS (M = Cu and Cd) derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-2002-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gülzow J, Hörner G, Strauch P, Stritt A, Irran E, Grohmann A. Oxygen Delivery as a Limiting Factor in Modelling Dicopper(II) Oxidase Reactivity. Chemistry 2017; 23:7009-7023. [PMID: 28094884 DOI: 10.1002/chem.201605868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Indexed: 11/10/2022]
Abstract
Deprotonation of ligand-appended alkoxyl groups in mononuclear copper(II) complexes of N,O ligands L1 and L2 , gave dinuclear complexes sharing symmetrical Cu2 O2 cores. Molecular structures of these mono- and binuclear complexes have been characterized by XRD, and their electronic structures by UV/Vis, 1 H NMR, EPR and DFT; moreover, catalytic performance as models of catechol oxidase was studied. The binuclear complexes with anti-ferromagnetically coupled copper(II) centers are moderately active in quinone formation from 3,5-di-tert-butyl-catechol under the established conditions of oxygen saturation, but are strongly activated when additional dioxygen is administered during catalytic turnover. This unforeseen and unprecedented effect is attributed to increased maximum reaction rates vmax , whereas the substrate affinity KM remains unaffected. Oxygen administration is capable of (partially) removing limitations to turnover caused by product inhibition. Because product inhibition is generally accepted to be a major limitation of catechol oxidase models, we think that our observations will be applicable more widely.
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Affiliation(s)
- Jana Gülzow
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Gerald Hörner
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Peter Strauch
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476, Potsdam-Golm, Germany
| | - Anika Stritt
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Andreas Grohmann
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
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