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Volumn 13, Issue 13, 2007, Pages 3617-3629

Theoretical evaluation of the substrate-assisted catalysis mechanism for the hydrolysis of phosphate monoester dianions

Author keywords

Density functional calculations; Hydrolyses; Phosphate esters; Reaction mechanisms; Substrate assisted catalysis

Indexed keywords

DINITROPHENYL PHOSPHATE; HYDROLYSES; PHOSPHATE ESTERS; SUBSTRATE ASSISTED CATALYSIS;

EID: 34250338776     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200601458     Document Type: Article
Times cited : (30)

References (79)
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    • Ed, M. L. Sinnot, Academic Press, London
    • A.C. Hengge, in Comprehensive Biological Catalysis, Vol.1 (Ed.: M. L. Sinnot), Academic Press, London, 1998, pp. 517-542.
    • (1998) Comprehensive Biological Catalysis , vol.1 , pp. 517-542
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    • [14] This half-life is even longer than what is thought to be the age of the universe (≈13.7 billions years).
    • [14] This half-life is even longer than what is thought to be the age of the universe (≈13.7 billions years).
  • 16
    • 34250331314 scopus 로고    scopus 로고
    • This expression reflects the requirement for an unfavorable preequilibrium proton transfer prior to the nucleophilic attack of OH on DNPP, as neither OH- nor DNPP is the predominant species at any pH; the equilibrium constant Keq, 10-11.2 is determined from the difference in the pKa constants of DNPP, 4.5)[17] and water 15.7
    • [17] and water (15.7).
  • 23
    • 34250346211 scopus 로고    scopus 로고
    • Gaussian 98 Revision A. 11, M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, V. G. Zakrzewski, J. A. Montgomery, Jr, R.E. Stratmann, J. C. Burant, S. Dapprich, J. M. Millam, A. D. Daniels, K. N. Kudin, M. C. Strain, O. Farkas, J. Tomasi, V. Barone, M. Cossi, R. Cammi, B. Mennucci, C. Pomelli, C. Adamo, S. Clifford, J. Ochterski, G. A. Petersson, P. Y. Ayala, Q. Cui, K. Morokuma, P. Salvador, J. J. Dannenberg, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. Cioslowski, J. V. Ortiz, A. G. Baboul, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. Gomperts, R. L. Martin, D. J. Fox, T. Keith, M. A. Al-Laham, C. Y. Peng, A. Nanayakkara, M. Challacombe, P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, J. L. Andres, C. Gonzalez, M. Head-Gordon, E. S. Replogle, J. A. Pople, Gaussian, Inc, Pittsburgh PA, 2001
    • Gaussian 98 (Revision A. 11). M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, V. G. Zakrzewski, J. A. Montgomery, Jr., R.E. Stratmann, J. C. Burant, S. Dapprich, J. M. Millam, A. D. Daniels, K. N. Kudin, M. C. Strain, O. Farkas, J. Tomasi, V. Barone, M. Cossi, R. Cammi, B. Mennucci, C. Pomelli, C. Adamo, S. Clifford, J. Ochterski, G. A. Petersson, P. Y. Ayala, Q. Cui, K. Morokuma, P. Salvador, J. J. Dannenberg, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. Cioslowski, J. V. Ortiz, A. G. Baboul, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. Gomperts, R. L. Martin, D. J. Fox, T. Keith, M. A. Al-Laham, C. Y. Peng, A. Nanayakkara, M. Challacombe, P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, J. L. Andres, C. Gonzalez, M. Head-Gordon, E. S. Replogle, J. A. Pople, Gaussian, Inc., Pittsburgh PA, 2001.
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    • See, for example, ref. [22] and the following: a X. Lopez, M. Schaefer, A. Dejaegere, M. Karplus, J. Am. Chem. Soc. 2002, 124, 5010-5018;
    • See, for example, ref. [22] and the following: a) X. Lopez, M. Schaefer, A. Dejaegere, M. Karplus, J. Am. Chem. Soc. 2002, 124, 5010-5018;
  • 34
    • 34250339012 scopus 로고    scopus 로고
    • -1) with the values obtained from the valence-only calculations using our pseudopotentials and basis sets.
    • -1) with the values obtained from the valence-only calculations using our pseudopotentials and basis sets.
  • 45
    • 34250320628 scopus 로고    scopus 로고
    • - attack at the P center.
    • - attack at the P center.
  • 55
    • 34250326428 scopus 로고    scopus 로고
    • Note that there is no proton transfer either when the reaction takes place through the slightly less stable (by ≈0.8kcal mol-1 in enthalpy) transition-state structure TS1a in which the O3-H3 and P-O4 bonds are perfectly aligned O4-P-O3-H3, 3.8°
    • -1 in enthalpy) transition-state structure TS1a in which the O3-H3 and P-O4 bonds are perfectly aligned (O4-P-O3-H3 = 3.8°).
  • 56
    • 34250334835 scopus 로고    scopus 로고
    • -1.
    • -1.
  • 57
    • 34250319054 scopus 로고    scopus 로고
    • B is the Boltzmann constant, R is the gas constant, T is the absolute temperature, h is the Planck constant, and ΔG is the free energy of activation.
    • B is the Boltzmann constant, R is the gas constant, T is the absolute temperature, h is the Planck constant, and ΔG is the free energy of activation.
  • 58
    • 34250333962 scopus 로고    scopus 로고
    • [15]
    • [15]
  • 60
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    • [55] and water (15.7).
    • [55] and water (15.7).
  • 63
    • 34250344970 scopus 로고    scopus 로고
    • [58]and water (15.7).
    • [58]and water (15.7).
  • 65
    • 34250312189 scopus 로고    scopus 로고
    • -1.
    • -1.
  • 67
    • 34250348487 scopus 로고    scopus 로고
    • - and PP, the negative charge accumulated on the phenolate oxygen atom in the transition state is greater if the phosphate hydrogen atom is oriented toward the leaving group rather than toward the attacking hydroxide (despite the fact that shorter P-O bond distances to the leaving group are involved in this case). This observation suggests that for aryl esters, the hydrogen-bond interaction between the phosphoryl proton and the phenolate oxygen atom introduces an energetic incentive to increase the amount of negative charge on this oxygen atom.
    • - and PP, the negative charge accumulated on the phenolate oxygen atom in the transition state is greater if the phosphate hydrogen atom is oriented toward the leaving group rather than toward the attacking hydroxide (despite the fact that shorter P-O bond distances to the leaving group are involved in this case). This observation suggests that for aryl esters, the hydrogen-bond interaction between the phosphoryl proton and the phenolate oxygen atom introduces an energetic incentive to increase the amount of negative charge on this oxygen atom.
  • 68
    • 34250322790 scopus 로고    scopus 로고
    • A similar βlg, value of -0.27 has been reported for the hydrolysis reaction of phosphate monoester monoanions[15] for which experimental evidence suggest that the leaving group is protonated in the transition state
    • [15] for which experimental evidence suggest that the leaving group is protonated in the transition state.
  • 74
    • 34250355304 scopus 로고    scopus 로고
    • The pH-rate profile data provided in ref. [67] regarding the AP-catalyzed reaction suggest, however, that phosphate monoester substrates bind and react with AP as dianions.
    • The pH-rate profile data provided in ref. [67] regarding the AP-catalyzed reaction suggest, however, that phosphate monoester substrates bind and react with AP as dianions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.