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Volumn 125, Issue 9, 2003, Pages 2462-2474

Fundamental reaction mechanism for cocaine hydrolysis in human butyrylcholinesterase

Author keywords

[No Author keywords available]

Indexed keywords

AMINO ACIDS; CATALYSIS; COMPUTER SIMULATION; ESTERS; GIBBS FREE ENERGY; HYDROLYSIS; MOLECULAR DYNAMICS; PROTONS;

EID: 0242669341     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja020850+     Document Type: Article
Times cited : (135)

References (94)
  • 74
    • 0242445009 scopus 로고    scopus 로고
    • note
    • (b) The energy barrier, 7.6 kcal/mol for the rate-determining step, given in ref 63a was determined by using the calculated total energies plus zero-point vibration energy corrections. Determination of the Gibbs free energy barrier requires the thermal corrections to the Gibbs free energies for all relevant species (cocaine, hydroxide ion, and the first transition state), instead of the zero-point vibration energy corrections. The required thermal corrections to the Gibbs free energies were not presented in ref 63a, and we use these results in this paper for the first time. The value after the thermal correction to Gibbs free energy in the Gaussian98 output actually includes the zero-point vibration energy and all thermal corrections (through corrections to both enthalpy and entropy) to Gibbs free energy. Hence, the Gibbs free energy in the gas phase was evaluated to be the calculated total energy plus the value after the thermal correction to Gibbs free energy. The free energy in solution was determined to be the gas-phase free energy plus the solvent shift obtained from the SVPE or FPCM solvation calculation (see refs 63a and 77 for the solvation method used). So, we obtained the Gibbs free energy barrier of 19.5 kcal/mol for the rate-determining step of the hydroxide ion-catalyzed hydrolysis of cocaine at the benzoyl ester.
  • 82
    • 0003520820 scopus 로고    scopus 로고
    • Vogtle, F., Stoddart, J. F., Shibasaki, M., Eds.; Wiley-VCH: Weinheim, Germany
    • (b) Tantillo, D. J.; Houk, K. N. In Stimulating Concepts in Chemistry; Vogtle, F., Stoddart, J. F., Shibasaki, M., Eds.; Wiley-VCH: Weinheim, Germany, 1998; p 79.
    • (1998) Stimulating Concepts in Chemistry , pp. 79
    • Tantillo, D.J.1    Houk, K.N.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.