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Kalaivani G, Sivanesan A, Kannan A, Sevvel R. Generating monomeric 5-coordinated microperoxidase-11 using carboxylic acid functionalized silver nanoparticles: A surface-enhanced resonance Raman scattering analysis. Colloids Surf B Biointerfaces 2016; 146:722-30. [DOI: 10.1016/j.colsurfb.2016.07.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 07/03/2016] [Accepted: 07/06/2016] [Indexed: 12/14/2022]
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2
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Mimetic biomembrane–AuNPs–graphene hybrid as matrix for enzyme immobilization and bioelectrocatalysis study. Talanta 2015; 143:438-441. [DOI: 10.1016/j.talanta.2015.05.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/05/2015] [Accepted: 05/10/2015] [Indexed: 12/12/2022]
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Arvadia P, Narwaley M, Whittal RM, Siraki AG. 4-Aminobenzoic acid hydrazide inhibition of microperoxidase-11: catalytic inhibition by reactive metabolites. Arch Biochem Biophys 2011; 515:120-6. [PMID: 21840294 DOI: 10.1016/j.abb.2011.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 07/27/2011] [Accepted: 07/29/2011] [Indexed: 11/30/2022]
Abstract
Inhibition of human peroxidase enzymes such as myeloperoxidase or eosinophil peroxidase represents a novel therapeutic area, for which there are no current clinical therapeutics. We utilized 4-aminobenzoic acid hydrazide which was reported to be a potent irreversible inhibitor of myeloperoxidase to gain insight into the role of reactive metabolites in catalytic inhibition. In order to carry out detailed studies, we used a model peroxidase, microperoxidase-11 (MP-11). We investigated the heme spectrum of MP-11 in the presence of 4-ABAH and found that heme bleaching occurred that was irreversible. This coincided with an absence of catalytic activity. The spin trap 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) was able to significantly prevent inactivation of peroxidase activity, therefore, we performed ESR spin trapping studies and detected a carbonyl carbon-centered radical of 4-ABAH. In order to determine if the free radical metabolites became bound to MP-11, we performed high-resolution MALDI with elemental analysis to determine the change in elemental composition that occurred in these reactions. These masses were assigned to free radical metabolites of 4-ABAH and were not observed in reactions containing DMPO. We conclude that the 4-ABAH free radical metabolites which were bound to MP-11 were involved in the catalytic inhibition and were scavenged by DMPO.
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Affiliation(s)
- Pratik Arvadia
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
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Lykourinou V, Chen Y, Wang XS, Meng L, Hoang T, Ming LJ, Musselman RL, Ma S. Immobilization of MP-11 into a Mesoporous Metal–Organic Framework, MP-11@mesoMOF: A New Platform for Enzymatic Catalysis. J Am Chem Soc 2011; 133:10382-5. [DOI: 10.1021/ja2038003] [Citation(s) in RCA: 499] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vasiliki Lykourinou
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Yao Chen
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Xi-Sen Wang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Le Meng
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Tran Hoang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Li-June Ming
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Ronald L. Musselman
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Shengqian Ma
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
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O'Reilly NJ, Magner E. The effect of solvent on the catalytic properties of microperoxidase-11. Phys Chem Chem Phys 2011; 13:5304-13. [DOI: 10.1039/c0cp02321c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Ernesto G. Mata
- a Instituto de Química Orgánica de Síntesis (CONICET-UNR), Facultad de Ciencias Bioguímicas y Farmacéuticas. Universidad Nacional de Rosario , Casilla de Correo 991, 2000, Rosario, Argentina
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Choe YK, Nagase S. Effect of the axial cysteine ligand on the electronic structure and reactivity of high-valent iron(IV) oxo-porphyrins (Compound I): A theoretical study. J Comput Chem 2005; 26:1600-11. [PMID: 16155883 DOI: 10.1002/jcc.20302] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The effect of axial ligands on the reactivity of high-valent iron(IV) oxo-porphyrins (Compound I) was investigated using the B3LYP hybrid density functional method. We studied alkane hydroxylation using four models: Compound I with thiolate, imidazole, phenolate, and chloride anions as axial ligands. The first three ligands were employed as models for cysteinate, histidine, and tyrosinate, respectively. Our calculations show that anionic ligands and neutral ligands favor different electronic states for stationary points in the reaction coordinate, and the calculated energy barrier and energy of several reaction intermediates show similar values. A remarkable effect of axial ligands was found in the final product release step. Our calculations show that the thiolate ligand weakens a bond between heme and an alcohol. In contrast, the imidazole ligand significantly increases the interaction between heme and an alcohol, which causes the catalytic cycle to be less efficient.
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Affiliation(s)
- Yoong-Kee Choe
- Research Institute for Computational Sciences, National Institute of Advanced Industrial Science and Technology, Center-2, Umezono 1-1-1, Tsukuba 305-8578, Japan.
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Oyadomari M, Kabuto M, Wariishi H, Tanaka H. Manganese (II) oxidation by microperoxidase-11 in hydrophilic organic media. Biochem Eng J 2003. [DOI: 10.1016/s1369-703x(02)00184-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Veeger C. Does P450-type catalysis proceed through a peroxo-iron intermediate? A review of studies with microperoxidase. J Inorg Biochem 2002; 91:35-45. [PMID: 12121760 DOI: 10.1016/s0162-0134(02)00393-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Recent stopped-flow kinetics demonstrated the existence of an intermediate before the occurrence of the final product of the reaction of both iron-containing microperoxidase-8 (Fe(III)MP-8) and manganese-containing microperoxidase-8 (Mn(III)MP-8) with H(2)O(2). The intermediate was assigned to be (hydro)peroxo-iron. With both mini-catalysts the final state obtained after 30-40 ms showed a resemblance to PorM(IV)MP-8[double bond]O(R(+)*); (R(+)*) is a radical located at the peptide. Quantum mechanical calculations indicate that hydroperoxo-iron is inactive as a catalytic intermediate in cytochrome P450 (P450)-type catalysis. Instead, the calculations suggest that peroxo-iron acts as the catalytic intermediate in P450-type catalysis. In addition, the calculations demonstrate that, although less likely, the possibility that oxenoid-iron acts as a catalytic intermediate in P450 catalysis cannot be fully excluded. An interesting aspect of the reactions catalysed by MP-8 is the possibility that, in view of the reversibility of the reactions between (hydro)peroxo-iron and oxenoid-iron, H(2)O plays a decisive role, at least in some cytochromes P450, in the removal of halogens, avoiding the production of compounds hazardous to the organism.
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Affiliation(s)
- Cees Veeger
- Laboratory of Biochemistry, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands.
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Effective oxygen transfer reaction catalyzed by microperoxidase-11 during sulfur oxidation of dibenzothiophene. Enzyme Microb Technol 2002. [DOI: 10.1016/s0141-0229(01)00514-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Reversible formation of high-valent-iron-oxo porphyrin intermediates in heme-based catalysis: revisiting the kinetic model for horseradish peroxidase. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)06111-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Osman AM, Boeren S, Boersma MG, Veeger C, Rietjens IM. Microperoxidase/H2O2-mediated alkoxylating dehalogenation of halophenol derivatives in alcoholic media. Proc Natl Acad Sci U S A 1997; 94:4295-9. [PMID: 9113983 PMCID: PMC20716 DOI: 10.1073/pnas.94.9.4295] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The results of this study report the H2O2-driven microperoxidase-8 (MP8)-catalyzed dehalogenation of halophenols such as 4-fluorophenol, 4-chlorophenol, 4-bromophenol, and 2-fluorophenol in alcoholic solvents. In methanol, the conversion of the para-halophenols and 2-fluorophenol to, respectively, 4-methoxyphenol and 2-methoxyphenol, as the major dehalogenated products is observed. In ethanol, 4-ethoxyphenol is the principal dehalogenated product formed from 4-fluorophenol. Two mechanisms are suggested for this MP8-dependent alkoxylating dehalogenation reaction. In one of these mechanisms the oxene resonant form of compound I of MP8 is suggested to react with methanol forming a cofactor-peroxide-alkyl intermediate. This intermediate reacts with the reactive pi-electrons of the substrate, leading to the formation of the alkoxyphenols and the release of the fluorine substituent as fluoride anion.
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Affiliation(s)
- A M Osman
- Department of Biochemistry, Agricultural University, Dreijenlaan 3, 6703 HA, Wageningen, The Netherlands
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Spee JH, Boersma MG, Veeger C, Samyn B, Van Beeumen J, Warmerdam G, Canters GW, Van Dongen WM, Rietjens IM. The influence of the peptide chain on the kinetics and stability of microperoxidases. EUROPEAN JOURNAL OF BIOCHEMISTRY 1996; 241:215-20. [PMID: 8898909 DOI: 10.1111/j.1432-1033.1996.0215t.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Microperoxidases with increasing lengths of the peptide attached to the heme moiety have been isolated after proteolytic digestion of horse-heart cytochrome c (microperoxidases 6, 8, and 11) and of cytochrome c550 from Thiobacillus versutus (microperoxidase 17). The different microperoxidases catalyze the H2O2-dependent para-hydroxylation of aniline relatively efficiently but are rapidly inactivated under turnover conditions. The horse-heart cytochrome-c-derived microperoxidases have identical values for Vmax but show a decrease of the K(m) for aniline and a higher stability when the attached peptide is longer. The kinetic constants obtained for microperoxidase 17, differ markedly from the microperoxidases derived from horse-heart cytochrome c. Possible factors underlying the observed differences are discussed.
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Affiliation(s)
- J H Spee
- Department of Biochemistry, Agricultural University, Wageningen, The Netherlands
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Osman AM, Koerts J, Boersma MG, Boeren S, Veeger C, Rietjens IM. Microperoxidase/H2O2-catalyzed aromatic hydroxylation proceeds by a cytochrome-P-450-type oxygen-transfer reaction mechanism. EUROPEAN JOURNAL OF BIOCHEMISTRY 1996; 240:232-8. [PMID: 8797858 DOI: 10.1111/j.1432-1033.1996.0232h.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The mechanism of aromatic hydroxylation of aniline and phenol derivatives in a H2O2-driven microperoxidase-8(MP8)-catalyzed reaction was investigated. It was shown that the reaction was not inhibited by the addition of scavengers of superoxide anion or hydroxyl radicals, which demonstrates that the reaction mechanism differs from that of the aromatic hydroxylation catalyzed by a horseradish peroxidase/ dihydroxyfumarate system. Additional experiments with 18O-labelled H2 18O2 demonstrated that the oxygen incorporated into aniline to give 4-aminophenol originates from H2O2. Furthermore, it was found that the addition of ascorbic acid efficiently blocks all peroxidase-type reactions that can be catalyzed by the MP8/H2O2 system, but does not inhibit the aromatic hydroxylation of aniline and phenol derivatives. Together, these observations exclude reaction mechanisms for the aromatic hydroxylation that proceed through peroxidase-type mechanisms in which the oxygen incorporated into the substrate originates from O2 or H2O. The mechanism instead seems to proceed by an initial attack of the high-valent iron-oxo intermediate of MP8 on the pi-electrons of the aromatic ring of the substrate leading to product formation by a cytochrome-P-450-type of sigma-O-addition or oxygen-rebound mechanism. This implies that MP8, which has a histidyl and not a cysteinate fifth axial ligand, is able to react by a cytochrome-P-450-like oxygen-transfer reaction mechanism.
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Affiliation(s)
- A M Osman
- Department of Biochemistry, Agricultural University, Wageningen, The Netherlands
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Koerts J, Boeren S, Vervoort J, Weiss R, Veeger C, Rietjens IM. Interaction between the substrate and the high-valent-iron-oxo porphyrin cofactor as a possible factor influencing the regioselectivity of cytochrome P450 catalysed aromatic ring hydroxylation of 3-fluoro(methyl)anilines. Chem Biol Interact 1996; 99:129-46. [PMID: 8620563 DOI: 10.1016/0009-2797(95)03664-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In the present study the in vitro and in vivo aromatic ring hydroxylation of a series of amino and/or methyl containing fluorobenzenes, i.e. 3-fluoro(methyl)anilines, was investigated and compared to the calculated density distribution of the reactive frontier pi-electrons of the aromatic substrate. This was done (1) to study to what extent the regioselectivity of the aromatic ring hydroxylation of the 3-fluoro(methyl)anilines could be predicted on the basis of the calculated chemical reactivity, as was previously observed for a series of fluorinated benzenes and monofluoroanilines, and (2) to investigate which factors contribute to possible deviations from the predictions on the basis of the calculated chemical reactivity. Results obtained show that the in vitro and in vivo aromatic ring hydroxylation of the series of 3-fluoro(methyl)anilines correlates qualitatively with the calculated frontier orbital density distribution for electrophilic attack by the cytochrome P450(FeO)3+ species. These results indicate that the HOMO/HOMO-1 frontier orbital densities, i.e. the chemical reactivity of the carbon centres for an electrophilic attack, predict the preferential as well as the non-reactive sites for cytochrome P450 catalysed aromatic ring hydroxylation of the tested model compounds. The absolute values, however, deviated in a systematic way; C4 para hydroxylation being observed to a higher extent than expected on the basis of chemical reactivity and C2/C6 ortho hydroxylation being observed to a lower extent than expected. Additional experiments were performed using different microsomal preparations and microperoxidase-8. The latter is a mini-heme protein of eight amino acids without a substrate binding site. In incubations of the model compounds with different types of microsomal preparations, as well as with MP-8 and purified reconstructed cytochrome P4502B1, similar systematic deviations between the predicted and observed regioselectivity of aromatic hydroxylation were observed. These results show that the regioselectivity of aromatic ring hydroxylation of the 3-fluoro(methyl)anilines cannot be predominantly ascribed to an interaction between the substrate and the substrate binding site of the cytochromes P450 dictating a specific stereoselective positioning of the substrate in the active site. More likely, the systematic deviations between the observed and predicted regioselectivity of hydroxylation of the tested model substrates should be ascribed to an (orienting) interaction between the substrate and the activated cytochrome P450(FeO)3+ cofactor.
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Affiliation(s)
- J Koerts
- Department of Biochemistry, Agricultural University, Wageningen, The Netherlands
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Cnubben NH, Vervoort J, Boersma MG, Rietjens IM. The effect of varying halogen substituent patterns on the cytochrome P450 catalysed dehalogenation of 4-halogenated anilines to 4-aminophenol metabolites. Biochem Pharmacol 1995; 49:1235-48. [PMID: 7763304 DOI: 10.1016/0006-2952(95)00043-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The cytochrome P450 catalysed biotransformation of 4-halogenated anilines was studied in vitro with special emphasis on the dehalogenation to 4-aminophenol metabolites. The results demonstrated that a fluorine substituent at the C4 position was more easily eliminated from the aromatic ring than a chloro-, bromo- or iodo-substituent. HPLC analysis of in vitro biotransformation patterns revealed that the dehalogenation of the C4-position was accompanied by formation of non-halogenated 4-aminophenol, without formation of NIH-shifted metabolites. Changes in the apparent Vmax for the microsomal oxidative dehalogenation appeared to correlate with the electronegativity of the halogen substituent at C4, the fluorine substituent being the one most easily eliminated. A similar decrease in the rate of dehalogenation from a fluoro- to a chloro- to a bromo- to an iodo-substituent was observed in a system with purified reconstituted cytochrome P450 IIB1, in a tertiair butyl hydroperoxide supported microsomal cytochrome P450 system as well as in a system with microperoxidase 8. This microperoxidase 8 is a haem-based mini-enzyme without a substrate binding site, capable of catalysing cytochrome P450-like reaction chemistry. Together, these results excluded the possibility that the difference in the rate of dehalogenation with a varying C4-halogen substituent arose from a change in the contribution of cytochrome P450 enzymes involved in oxidative dehalogenation with a change in the halogen substituent. Rather, they strongly suggested that the difference was indeed due to an intrinsic electronic parameter of the various C4 halogenated anilines dependent on the type of halogen substituent. Additional in vitro experiments with polyfluorinated anilines demonstrated that elimination of the C4-fluorine substituent became more difficult upon the introduction of additional electron withdrawing fluorine substituents in the aniline-ring. 19F-NMR analysis of the metabolite patterns showed that the observed decrease in 4-aminophenol formation was accompanied by a metabolic switch to 2-aminophenols and N-hydroxyanilines, while products resulting from NIH-type mechanisms were not observed. For a C4-chloro-, bromo-, or iodo-substituted 2-fluoroaniline the Vmax for the oxidative dehalogenation was reduced by the additional electron withdrawing fluorine substituent at the C2 position in a similar way.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- N H Cnubben
- Department of Biochemistry, Agricultural University, Wageningen, The Netherlands
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Mabrouk PA. First direct interfacial electron transfer between a biomolecule and a solid electrode in non-aqueous media: Direct electrochemistry of microperoxidase-11 at glassy carbon in dimethyl sulfoxide solution. Anal Chim Acta 1995. [DOI: 10.1016/0003-2670(94)00559-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Colonna S, Gaggereo N, Carrea G, Pasta P. The microperoxidase-11 catalyzed oxidation of sulfides is enantioselective. Tetrahedron Lett 1994. [DOI: 10.1016/0040-4039(94)88440-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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