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Additivity or cooperativity: which model can predict the influence of simultaneous incorporation of two or more functionalities in a ligand molecule?

Abstract：

:Predicting how binding affinity responds to ligand structural modifications in structure-activity relationship studies (SAR) is a major challenge in medicinal chemistry. This is particularly true when two or more of these modifications are carried out simultaneously. In this study, we present binding affinity data from several series of thermolysin inhibitors in which simultaneous structural modifications were investigated to determine whether they are cooperative or additive. Data revealed that, while additivity is at work in some cases, cooperativity is more commonly demonstrated. Cooperativity and additivity were then correlated with ligand descriptors, such as the spacing and the topological features of the modified groups, in a manner that may provide guidance as to when each model should be utilized. Cooperativity was particularly associated with contiguous groups and small unbranched hydrophobic side chain. Additivity, on the other hand, was associated with moderately distant hydrophobic group combinations and side chain branching. Such correlations can improve the predictability of SAR studies and can provide a starting point for additional investigations that may lead to further significant enhancements in the current scoring functions.

journal_name

Eur J Med Chem

journal_title

European journal of medicinal chemistry

authors

Nasief NN,Hangauer D

doi

10.1016/j.ejmech.2014.11.056

subject

Has Abstract

pub_date

2015-01-27 00:00:00

pages

897-915

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(14)01098-8

journal_volume

90

pub_type

杂志文章

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