Journal
CELLS
Volume 7, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/cells7020013
Keywords
polo-like kinase-1 inhibitors; quantitative structure-activity relationships; half-maximal inhibitory concentration; replacement method; molecular descriptors
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Funding
- National Scientific and Technical Research Council (CONICET) of Argentina [PIP11220130100311]
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A structurally diverse dataset of 530 polo-like kinase-1 (PLK1) inhibitors is compiled from the ChEMBL database and studied by means of a conformation-independent quantitative structure-activity relationship (QSAR) approach. A large number (26,761) of molecular descriptors are explored with the main intention of capturing the most relevant structural characteristics affecting the bioactivity. The structural descriptors are derived with different freeware, such as PaDEL, Mold(2), and QuBiLs-MAS; such descriptor software complements each other and improves the QSAR results. The best multivariable linear regression models are found with the replacement method variable subset selection technique. The balanced subsets method partitions the dataset into training, validation, and test sets. It is found that the proposed linear QSAR model improves previously reported models by leading to a simpler alternative structure-activity relationship.
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