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Fadler RE, Al Ouahabi A, Qiao B, Carta V, König NF, Gao X, Zhao W, Zhang Y, Lutz JF, Flood AH. Chain Entropy Beats Hydrogen Bonds to Unfold and Thread Dialcohol Phosphates inside Cyanostar Macrocycles To Form [3]Pseudorotaxanes. J Org Chem 2021; 86:4532-4546. [PMID: 33636075 PMCID: PMC8063573 DOI: 10.1021/acs.joc.0c02887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The recognition of substituted phosphates underpins many processes including DNA binding, enantioselective catalysis, and recently template-directed rotaxane synthesis. Beyond ATP and a few commercial substrates, however, little is known about how substituents effect organophosphate recognition. Here, we examined alcohol substituents and their impact on recognition by cyanostar macrocycles. The organophosphates were disubstituted by alcohols of various chain lengths, dipropanol, dihexanol, and didecanol phosphate, each accessed using modular solid-phases syntheses. Based on the known size-selective binding of phosphates by π-stacked dimers of cyanostars, threaded [3]pseudorotaxanes were anticipated. While seen with butyl substituents, pseudorotaxane formation was disrupted by competitive OH···O- hydrogen bonding between both terminal hydroxyls and the anionic phosphate unit. Crystallography also showed formation of a backfolded propanol conformation resulting in an 8-membered ring and a perched cyanostar assembly. Motivated by established entropic penalties accompanying ring formation, we reinstated [3]pseudorotaxanes by extending the size of the substituent to hexanol and decanol. Chain entropy overcomes the enthalpically favored OH···O- contacts to favor random-coil conformations required for seamless, high-fidelity threading of dihexanol and didecanol phosphates inside cyanostars. These studies highlight how chain length and functional groups on phosphate's substituents can be powerful design tools to regulate binding and control assembly formation during phosphate recognition.
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Affiliation(s)
- Rachel E Fadler
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Abdelaziz Al Ouahabi
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Bo Qiao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Veronica Carta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Niklas F König
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Xinfeng Gao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Wei Zhao
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Yankai Zhang
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Jean-François Lutz
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR22, Strasbourg, 67034, France
| | - Amar H Flood
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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2
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Mikkola S, Lönnberg T, Lönnberg H. Phosphodiester models for cleavage of nucleic acids. Beilstein J Org Chem 2018; 14:803-837. [PMID: 29719577 PMCID: PMC5905247 DOI: 10.3762/bjoc.14.68] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/12/2018] [Indexed: 12/12/2022] Open
Abstract
Nucleic acids that store and transfer biological information are polymeric diesters of phosphoric acid. Cleavage of the phosphodiester linkages by protein enzymes, nucleases, is one of the underlying biological processes. The remarkable catalytic efficiency of nucleases, together with the ability of ribonucleic acids to serve sometimes as nucleases, has made the cleavage of phosphodiesters a subject of intensive mechanistic studies. In addition to studies of nucleases by pH-rate dependency, X-ray crystallography, amino acid/nucleotide substitution and computational approaches, experimental and theoretical studies with small molecular model compounds still play a role. With small molecules, the importance of various elementary processes, such as proton transfer and metal ion binding, for stabilization of transition states may be elucidated and systematic variation of the basicity of the entering or departing nucleophile enables determination of the position of the transition state on the reaction coordinate. Such data is important on analyzing enzyme mechanisms based on synergistic participation of several catalytic entities. Many nucleases are metalloenzymes and small molecular models offer an excellent tool to construct models for their catalytic centers. The present review tends to be an up to date summary of what has been achieved by mechanistic studies with small molecular phosphodiesters.
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Affiliation(s)
- Satu Mikkola
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
| | - Tuomas Lönnberg
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
| | - Harri Lönnberg
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
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3
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Bím D, Svobodová E, Eigner V, Rulíšek L, Hodačová J. Copper(II) and Zinc(II) Complexes of Conformationally Constrained Polyazamacrocycles as Efficient Catalysts for RNA Model Substrate Cleavage in Aqueous Solution at Physiological pH. Chemistry 2016; 22:10426-37. [DOI: 10.1002/chem.201601175] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Bím
- Department of Organic Chemistry, Faculty of Chemical Technology; University of Chemistry and Technology; Technická 5 166 28 Prague 6 Czech Republic), Fax: (+420) 220-444-288
- Institute of Organic Chemistry and Biochemistry; v.v.i. and Gilead Sciences Research Center, Academy of Sciences of the Czech Republic; Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Eva Svobodová
- Department of Organic Chemistry, Faculty of Chemical Technology; University of Chemistry and Technology; Technická 5 166 28 Prague 6 Czech Republic), Fax: (+420) 220-444-288
| | - Václav Eigner
- Department of Solid State Chemistry, Faculty of Chemical Technology; University of Chemistry and Technology; Technická 5 166 28 Prague 6 Czech Republic
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry; v.v.i. and Gilead Sciences Research Center, Academy of Sciences of the Czech Republic; Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Jana Hodačová
- Department of Organic Chemistry, Faculty of Chemical Technology; University of Chemistry and Technology; Technická 5 166 28 Prague 6 Czech Republic), Fax: (+420) 220-444-288
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Ferreira CMH, Pinto ISS, Soares EV, Soares HMVM. (Un)suitability of the use of pH buffers in biological, biochemical and environmental studies and their interaction with metal ions – a review. RSC Adv 2015. [DOI: 10.1039/c4ra15453c] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The present work reviews, discusses and update the metal complexation characteristics of thirty one buffers commercially available. Additionally, their impact on the biological systems is also presented and discussed.
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Affiliation(s)
- Carlos M. H. Ferreira
- REQUIMTE/LAQV
- Department of Chemical Engineering
- Faculty of Engineering
- University of Porto
- Porto
| | - Isabel S. S. Pinto
- REQUIMTE/LAQV
- Department of Chemical Engineering
- Faculty of Engineering
- University of Porto
- Porto
| | - Eduardo V. Soares
- Bioengineering Laboratory
- Chemical Engineering Department
- ISEP-School of Engineering of Polytechnic Institute of Porto
- Porto
- Portugal
| | - Helena M. V. M. Soares
- REQUIMTE/LAQV
- Department of Chemical Engineering
- Faculty of Engineering
- University of Porto
- Porto
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5
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Váňa J, Sedlák M, Hanusek J. Influence of Cu(II) Ions on the Mechanism of the Ring Transformation ofS-(2-Oxotetrahydrofuran-3-yl)-N-(4-methoxyphenyl)isothiouronium Bromide. INT J CHEM KINET 2013. [DOI: 10.1002/kin.20761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jiří Váňa
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; CZ-532 10 Pardubice; The Czech Republic
| | - Miloš Sedlák
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; CZ-532 10 Pardubice; The Czech Republic
| | - Jiří Hanusek
- Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; CZ-532 10 Pardubice; The Czech Republic
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Korhonen H, Koivusalo T, Toivola S, Mikkola S. There is no universal mechanism for the cleavage of RNA model compounds in the presence of metal ion catalysts. Org Biomol Chem 2013; 11:8324-39. [DOI: 10.1039/c3ob41554f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Desbouis D, Troitsky IP, Belousoff MJ, Spiccia L, Graham B. Copper(II), zinc(II) and nickel(II) complexes as nuclease mimetics. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.12.005] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Korhonen H, Mikkola S, Williams NH. The mechanism of cleavage and isomerisation of RNA promoted by an efficient dinuclear Zn2+ complex. Chemistry 2011; 18:659-70. [PMID: 22162262 DOI: 10.1002/chem.201100721] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Indexed: 11/11/2022]
Abstract
The cleavage and isomerisation of uridine 3'-alkylphosphates was studied in the presence of a dinuclear Zn(2+) complex, 3. The rate acceleration of the cleavage by 1 mM 3 is approximately 10(6)-fold under neutral conditions. Most remarkably, the complex also promotes the isomerisation of phosphodiester bonds, although the rate-enhancement is more modest: under neutral conditions complex 3 (1 mM) catalyses isomerisation by about 500-fold. The observation of this reaction shows that the reactions of these substrates catalysed by 3 proceed through a stepwise mechanism involving an intermediate phosphorane. A β(lg) value of -0.92 was determined for the 3-promoted cleavage reaction, and modest kinetic solvent deuterium isotope effects ranging from 1.5 to 2.8 were observed. Isomerisation was less sensitive to the nature of the esterifying group, with a β value of -0.5, and the kinetic solvent deuterium isotope effects were less than 1.5. Most of these characteristics of the 3-promoted cleavage are very similar to those for the cleavage of nucleoside 3'-phosphotriesters. These data are explained by a mechanism in which the complex primarily acts as an electrophilic catalyst neutralising the charge on the phosphate and stabilising an intermediate phosphorane, with general acid catalysis promoting the cleavage reaction. In contrast to the behaviour of triesters, isomerisation is significantly slower than cleavage; this suggests that the changes in geometry that occur during isomerisation lead to a much less stable complex between 3 and the phosphorane intermediate.
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Affiliation(s)
- Heidi Korhonen
- Department of Chemistry, 20014 University of Turku, Turku, Finland
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10
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Kady IO. Transesterification of Phosphotriester Paraoxon Catalyzed by ZnCl2Supported on Silica Gel. CHEM LETT 2008. [DOI: 10.1246/cl.2008.744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Das S, Brudvig GW, Crabtree RH. Molecular recognition in homogeneous transition metal catalysis: a biomimetic strategy for high selectivity. Chem Commun (Camb) 2008:413-24. [DOI: 10.1039/b710355g] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Remarkable acceleration on the transesterification reaction of 2-hydroxypropyl-p-nitrophenyl phosphate by ionic liquids. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2006.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Jiang W, Xu B, Lin Q, Li J, Fu H, Zeng X, Chen H. Cleavage of phosphate diesters mediated by Zn(II) complex in Gemini surfactant micelles. J Colloid Interface Sci 2007; 311:530-6. [PMID: 17445825 DOI: 10.1016/j.jcis.2007.02.056] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2006] [Revised: 02/15/2007] [Accepted: 02/17/2007] [Indexed: 11/16/2022]
Abstract
The cleavage of 2-hydroxypropyl p-nitrophenyl phosphate (HPNP) catalyzed by the Zn(II)-biap (biap: N,N-bis(2-ethyl-5-methylimidazole-4-ylmethyl)aminopropane) complex has been investigated spectrophotometrically in a micellar solution of cationic Gemini surfactant 16-2-16 [bis(hexadecyldimethylammonium)ethane bromide] and CTAB (hexadecyltrimethylammonium bromide) at 25+/-0.1 degrees C. The experimental results reveal that a higher rate of acceleration (about 2016-fold) of HPNP cleavage promoted by the Zn(II)-biap complex has been observed in the 16-2-16 micellar solution in comparison with the background rate (k(0)) of HPNP spontaneous cleavage at 25 degrees C. Reaction rates of HPNP cleavage in CTAB micellar solutions are only about 40% of that in Gemini 16-2-16 micelles under comparable conditions. In addition, the cleavage rates of HPNP in Gemini micelles and in CTAB micelles are respectively 29.5 times and 12 times faster than that in aqueous buffer. Especially, a "sandwich absorptive mode" has been proposed to explain the acceleration of HPNP cleavage in a cationic micellar solution.
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Affiliation(s)
- Weidong Jiang
- Key Laboratory of Green Chemistry & Technology, Sichuan University, Ministry of Education, Sichuan Chengdu 610064, People's Republic of China
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14
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Cheng SQ, Wang YR, Yan JF, Zeng X. Hydrolysis of phosphodiester catalyzed by analogous dinuclear Cu(II) complex in CTAB micellar solution. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.05.049] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Synthesis, Characterization and Phosphodiester Bond Cleavage Studies of the Dinuclear, Thioacetatocobalt(II) of 3-methylsulfanylpropionic Acid Complex. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-005-6371-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Zhong H, Yuanjie S, Rong‐rong Z, Xiang‐guang M, Xian‐cheng Z. Metallomicellar Catalytic Hydrolysis of NPP by CuIINiIIHeterodinuclear Complexes Containing Diamine Groups in Brij35 Micellar Solution. J DISPER SCI TECHNOL 2005. [DOI: 10.1081/dis-200062984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Vichard C, Kaden TA. Phosphate diester hydrolysis in biological relevant compounds by dinuclear metal complexes. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.12.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Zhu L, dos Santos O, Koo CW, Rybstein M, Pape L, Canary JW. Geometry-dependent phosphodiester hydrolysis catalyzed by binuclear copper complexes. Inorg Chem 2004; 42:7912-20. [PMID: 14632508 DOI: 10.1021/ic0340985] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two isomeric binuclear ligands PBTPA and MBTPA and their copper(II) complexes were prepared and examined for hydrolysis of a model phosphodiester substrate: bis(p-nitrophenyl)phosphate. A bell-shaped pH vs rate profile, which is in agreement with one mechanism proposed for bimetallonucleases/phosphatases, was observed for the binuclear complex of copper(II) and PBTPA. At pH 8.4, a maximum rate of 1.14 x 10(-6) s(-1)--more than 10(4)-fold over uncatalyzed reactions--was achieved. However, the analogous complex of MBTPA did not show significant rate enhancement. The binuclear complex of copper(II) and PBTPA also showed 10-fold acceleration over mononuclear complex of copper(II) and tris(2-pyridylmethyl)amine (TPA) catalyzed reaction. A phage phiX174 DNA assay showed that the complex of copper(II) and PBTPA promoted supercoiled phage phiX174 DNA relaxation under both aerobic and anaerobic conditions, in contrast to the hydrolytic inactivity of the mononuclear complex of copper(II) and TPA.
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Affiliation(s)
- Lei Zhu
- Department of Chemistry, New York University, New York, New York 10003, USA
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19
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Buncel E, Nagelkerke R, Thatcher GRJ. Alkali metal ion catalysis in nucleophilic displacement by ethoxide ion on p-nitrophenyl phenylphosphonate: Evidence for multiple metal ion catalysis. CAN J CHEM 2003. [DOI: 10.1139/v02-202] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In continuation of our studies of alkali metal ion catalysis and inhibition at carbon, phosphorus, and sulfur centers, the role of alkali metal ions in nucleophilic displacement reactions of p-nitrophenyl phenylphosphonate (PNPP) has been examined. All alkali metal ions studied acted as catalysts. Alkali metal ions added as inert salts increased the rate while decreased rate resulted on M+ complexation with 18-crown-6 ether. Kinetic analysis indicated the interaction of possibly three potassium ions, four sodium ions, and five lithium ions in the transition state of the reactions of ethoxide with PNPP. Pre-association of the anionic substrate with two metals ions in the ground state gave the best fit to the experimental data of the sodium system. Thus, the study gives evidence of the role of several metal ions in nucleophilic displacement reactions of ethoxide with anionic PNPP, both in the ground state and in the transition state. Molecular modeling of the anionic transition state implies that the size of the monovalent cation and the steric requirement of the pentacoordinate transition state are the primary limitations on the number of cations that can be brought to bear to stabilize the transition state and catalyze nucleophilic substitution at phosphorus. The bearing of the present work on metal ion catalysis in enzyme systems is discussed, in particular enzymes that catalyze phosphoryl transfer, which often employ multiple metal ions. Our results, both kinetic and modeling, reveal the importance of electrostatic stabilization of the transition state for phosphoryl transfer that may be effected by multiple cations, either monovalent metal ions or amino acid residues. The more such cations can be brought into contact with the anionic transition state, the greater the catalysis observed.Key words: alkali metal ion catalysis, nucleophilic displacement at phosphorus, multiple metal ion catalysis, phosphoryl transfer.
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Molard Y, Parrot-Lopez H. Molecular scaffolds for di-metallic complexation: the synthesis, characterisation and complexation properties of tetrakis-terpyridinyl-calix[4]arene. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01386-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Vichard C, Kaden TA. Phosphate and phosphonate ester hydrolysis promoted by dinuclear metal complexes. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)00997-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Gajda T, Krämer R, Jancsó A. Structure, Equilibrium and Ribonuclease Activity of Copper(II) and Zinc(II) Complexes Formed with a Dinucleating Bis-Imidazole Ligand. Eur J Inorg Chem 2000. [DOI: 10.1002/1099-0682(200007)2000:7<1635::aid-ejic1635>3.0.co;2-j] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Acceleration of acid-catalyzed transesterification of 2-hydroxypropyl-p-nitrophenyl phosphate by organic solvents. Org Lett 2000; 2:377-80. [PMID: 10814327 DOI: 10.1021/ol991321m] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] Transesterification of 2-hydroxypropyl-p-nitrophenyl phosphate in the presence of 0.092 M HClO4 is 50-5000 times faster in acetonitrile, 1,4-dioxane, methanol, ethanol, N,N-dimethylformamide, or dimethyl sulfoxide than in water. This demonstrates the importance of tuning the microenvironments in designing synthetic nucleases.
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24
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Suh J. Designing active sites of synthetic artificial enzymes. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1068-7459(00)80008-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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25
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Molenveld P, Stikvoort WMG, Kooijman H, Spek AL, Engbersen JFJ, Reinhoudt DN. Dinuclear and Trinuclear Zn(II) Calix[4]arene Complexes as Models for Hydrolytic Metallo-Enzymes. Synthesis and Catalytic Activity in Phosphate Diester Transesterification. J Org Chem 1999. [DOI: 10.1021/jo982201f] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Molenveld
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Wendy M. G. Stikvoort
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Huub Kooijman
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Johan F. J. Engbersen
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - David N. Reinhoudt
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Suh J, Hong SH. Catalytic Activity of Ni(II)−Terpyridine Complex in Phosphodiester Transesterification Remarkably Enhanced by Self-Assembly of Terpyridines on Poly(ethylenimine). J Am Chem Soc 1998. [DOI: 10.1021/ja982705v] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junghun Suh
- Contribution from the Department of Chemistry and Center for Molecular Catalysis, Seoul National University, Seoul 151-742, Korea
| | - Sang Hyun Hong
- Contribution from the Department of Chemistry and Center for Molecular Catalysis, Seoul National University, Seoul 151-742, Korea
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27
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Molenveld P, Engbersen JFJ, Kooijman H, Spek AL, Reinhoudt DN. Efficient Catalytic Phosphate Diester Cleavage by the Synergetic Action of Two Cu(II) Centers in a Dinuclear Cis-Diaqua Cu(II) Calix[4]arene Enzyme Model. J Am Chem Soc 1998. [DOI: 10.1021/ja9805324] [Citation(s) in RCA: 138] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Molenveld
- Contribution from the Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Johan F. J. Engbersen
- Contribution from the Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Huub Kooijman
- Contribution from the Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Contribution from the Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - David N. Reinhoudt
- Contribution from the Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Liu S, Luo Z, Hamilton AD. Schnelle und hochselektive Spaltung von cyclischen Ribonucleosid-2′,3′-monophosphaten durch zweikernige CuII-Komplexe. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971092341] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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