PROBING THE UNDERLYING BASIS FOR THE BINDING-SPECIFICITY OF CALICHEAMICIN GAMMA(1)(I) - A MOLECULAR-DYNAMICS STUDY

被引:13
作者
LANGLEY, DR [1 ]
DOYLE, TW [1 ]
BEVERIDGE, DL [1 ]
机构
[1] WESLEYAN UNIV,DEPT CHEM,HALL ATWATER LABS,MIDDLETOWN,CT 06457
基金
美国国家卫生研究院;
关键词
D O I
10.1016/S0040-4020(01)80625-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Six different models of the DNA-calicheamicin complex were constructed to investigate the mode of binding of the rhamnose, thiobenzoate and thiosugar residues of the carbohydrate-thiabenzoate tail of calicheamicin with DNA. The stability of each model was tested in a 500 psec solvated molecular dynamics simulation. Five of the six models predicted the correct DNA hydrogen abstraction pattern. However, only one model was found to be consistent with air of the available experimental data and provided a clear rationale for the observed 5'-TCCT/3'AGGA sequence specificity.
引用
收藏
页码:1379 / 1396
页数:18
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