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Volumn 106, Issue 19, 2002, Pages 4988-4997

Quantum mechanics studies of the intrinsic conformation of trehalose

Author keywords

[No Author keywords available]

Indexed keywords

DENSITY FUNCTIONAL THEORY; DISACCHARIDE TREHALOSE; ENERGY SURFACE; GAUCHE LINKAGE CONFORMATION; LINKAGE TORSION ANGLES; MOLECULAR ORBITAL; MOLECULE CRYSTAL STRUCTURE; SOLVATION;

EID: 0037118414     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp020126d     Document Type: Article
Times cited : (36)

References (64)
  • 33
    • 0034351346 scopus 로고    scopus 로고
    • The trehalose surfaces were not published in this work, but the average energies of the crystalline conformations were tabulated.
    • French, A. D.; Kelterer, A.-M.; Johnson, G. P.; Dowd, M. K.; Cramer, C. J. J. Mol. Graphics Mol. Modelling 2000, 18, 95-107. The trehalose surfaces were not published in this work, but the average energies of the crystalline conformations were tabulated.
    • (2000) J. Mol. Graphics Mol. Modelling , vol.18 , pp. 95-107
    • French, A.D.1    Kelterer, A.-M.2    Johnson, G.P.3    Dowd, M.K.4    Cramer, C.J.5
  • 39
    • 0002303992 scopus 로고    scopus 로고
    • Carbohydr. Res., 1997, 297, 1-90;
    • (1997) Carbohydr. Res. , vol.297 , pp. 1-90
  • 40
    • 21944456811 scopus 로고    scopus 로고
    • J. Carbohydr. Chem. 1997, 16, 1191-1280;
    • (1997) J. Carbohydr. Chem. , vol.16 , pp. 1191-1280
  • 41
    • 84900403742 scopus 로고    scopus 로고
    • Pure Appl. Chem. 1996, 68, 1919-2008.
    • (1996) Pure Appl. Chem. , vol.68 , pp. 1919-2008
  • 44
    • 0030593397 scopus 로고    scopus 로고
    • note
    • The importance of diffuse functions, represented by the + signs in the 6-311++G** basis set designation, to the correct calculation of the energy when correlation is included was stated in, Csonka, G. I.; Elias, K.; Csizmadia, I. G. Chem. Phys. Letts. 1996, 257 49-60. Our work in ref 39 also reported over-estimation of hydrogen bonding strength with the 6-31G * basis set when the MP2 level of theory was used. In his comments on a draft of our manuscript, Prof. Csonka suggested that less CPU time would be required with the 6-31+G* basis set and the accuracy would be similar. In the present case, the bulk of the computer time was spent on the energy minimizations with the B3LYP/6-31G* level of theory. The succeeding single point calculations with the 6-311++G** basis set added little to the total time required.
    • (1996) Chem. Phys. Letts. , vol.257 , pp. 49-60
    • Csonka, G.I.1    Elias, K.2    Csizmadia, I.G.3
  • 46
    • 0003471204 scopus 로고    scopus 로고
    • Schrodinger, Inc., Portland, Oregon, U.S.A.
    • Jaguar 4.0, Schrodinger, Inc., Portland, Oregon, U.S.A.
    • Jaguar 4.0
  • 47
    • 0011202619 scopus 로고    scopus 로고
    • SURFER is available from Golden Software, Golden Colorado, U.S.A.
    • SURFER is available from Golden Software, Golden Colorado, U.S.A.
  • 51
    • 0011231750 scopus 로고    scopus 로고
    • note
    • The calculations that were redundant because of symmetry were used to test the robustness of the minimizer for these complex systems.
  • 53
    • 0011159204 scopus 로고    scopus 로고
    • MacroModel is available from Schrodinger, Inc., Portland, Oregon, U.S.A.
    • MacroModel is available from Schrodinger, Inc., Portland, Oregon, U.S.A.
  • 57
    • 0011226404 scopus 로고    scopus 로고
    • Chem-X is no longer available.
    • Chem-X is no longer available.
  • 61
    • 0011243169 scopus 로고    scopus 로고
    • note
    • Gridding is a preliminary step in the preparation of contour plots with the SURFER software. A final grid of energy data is prepared by mathematical fitting. Although it would be better if less interpolation were used, our experiences with various grid sizes and isolation of minima shows that the procedure works reasonably well.
  • 62
    • 0011159411 scopus 로고    scopus 로고
    • note
    • The pragmatism of reducing hydrogen bond strength so the surface can best rationalize the crystal structures should be taken in context. Although the calculated relative potential energies of an isolated molecule are being used to predict the molecular shapes in crystals, the crystalline shapes be actually governed by the total free energy of the system and kinetics effects. If the modeling method explicitly provides an opportunity to determine the free energy, then the reduced hydrogen bonding strength may not be appropriate. Furthermore, if neighboring molecules, such as solve are explicitly part of the model, then intramolecular hydrogen bonds may not predominate. There again, reduced hydrogen bonding strength may not be appropriate. Other explanations for the utility of reduced hydrogen bonding strength have been given in ref 33.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.