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Volumn 106, Issue 3, 2002, Pages 717-722

Theoretical determination of two structural forms of the active site in cadmium-containing phosphotriesterases

Author keywords

[No Author keywords available]

Indexed keywords

X-RAY CRYSTAL STRUCTURES;

EID: 0037165455     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp013064k     Document Type: Article
Times cited : (47)

References (40)
  • 26
    • 0004190995 scopus 로고    scopus 로고
    • (b) Basis sets were obtained from the Extensible Computational Chemistry Environment Basis Set Database, Version 1999, as developed and distributed by the Molecular Science Computing Facility, Environmental and Molecular Sciences Laboratory, which is part of the Pacific Northwest Laboratory, P.O. Box 999, Richland, WA 99352, and funded by the U.S. Department of Energy. The Pacific Northwest Laboratory is a multi-program laboratory operated by Battelle Memorial Institue for the U.S. Department of Energy under contract DE-AC06-76RLO 1830. Contact David Feller or Karen Schuchardt for further information.
    • (1999) Extensible Computational Chemistry Environment Basis Set Database, Version 1999
  • 38
    • 0011137639 scopus 로고    scopus 로고
    • note
    • 2+-substituted PTE. In addition, the calculated free energies of models 2 and 2a so close that both had chances to exist in the crystal depending on the condition of crystal growth. Assuming that the reported crystal existed in the structural form like model 2a, the second bridging ligand may be regarded as a hydroxide plus a water molecule which strongly hydrogen-bonds to the hydroxide. When the bridging hydroxide plus a water molecule hydrogen-bonded to the hydroxide is modeled as a simple hydroxide (or water), its position is expected to be an average of the real hydroxide and the real water molecule. According to this assumption, the average distance between the second bridging ligand and the two cadmiun ions in model 2a should be ∼3.03 Å compared to the corresponding average value, ∼2.26 Å, for model 2. Further assuming that the reported crystal is close to a simple 1:1 mixture of two structural forms such as models 2 and 2a, the average distance between the second bridging ligand and the two cadmiun ions should be close to ∼2.65 Å which is in excellent agreement with the experimental value of ∼2.7 Å.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.