Um modelo para a interação de bisamidinas aromáticas com o B-DNA foi estabelecido através de estudos de relações estruturas-propriedades derivadas dos cálculos de descritores tridimensionais WHIM-3D. Uma análise de componentes principais, PCA, dos descritores revelou três componentes principais significativas e agrupou as bisamidinas em diferentes conformações: estendida, semi-estendida e semifechada com interações tipo π-π e também por ligações de hidrogênio. O método SIMCA classificou as conformações de acordo com essas características. A interação das 29 bisamidinas estudadas com o B-DNA dá-se através de suas propriedades de forma, distribuição e dimensão.A proposed model for the interaction of bisamidine analogues with the B-DNA receptor is established by structure-property relationship studies derived from 3D-WHIM descriptor calculations. Three classes, each with relevant information about structural relationships, were determined by PCA and SIMCA analyses for molecular conformations described by 3D-WHIM descriptors for a set of 29 bisamidines with antileishmaniasis and anti-PCP activities. Shape, distribution and dimension properties mostly govern the interaction of bisamidines with B-DNA through the minor groove AT rich regions.
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