Salient Aspects of PBP2A-inhibition; A QSAR Study.

Abstract:

BACKGROUND:Inhibition of penicillin binding protein 2A (PBP2A) represents a sound drug design strategy in combatting Methicillin resistant Staphylococcus aureus (MRSA). Considering the urgent need for effective antimicrobials in combatting MRSA infections, we have developed a statistically robust ensemble of molecular descriptors (1, 2, & 3-D) from compounds targeting PBP2A in vivo. METHODS:37 (training set: 26, test set: 11) PBP2A-inhibitors were submitted for descriptor generation after which an unsupervised, non-exhaustive genetic algorithm (GA) was deployed for fishing out the best descriptor subset. Assignment of descriptors to a regression model was accomplished with the Partial Least Square (PLS) algorithm. At the end, an ensemble of 30 descriptors accurately predicted the ligand bioactivity, IC50 (R = 0.9996, R2 = 0.9992, R2 a = 0.9949, SEE =, 0.2297 Q2 LOO = 0.9741). RESULTS AND CONCLUSION:Inferentially, we noticed that the overall efficacy of this model greatly depends on atomic polarizability and negative charge (electron) density. Besides the formula derived, the high dimensional model also offers critical insights into salient cheminformatics parameter to note during hit-to-lead PBP2A-antagonist optimization.

authors

Ogunleye AJ,Eniafe GO,Inyang OK,Adewumi B,Omotuyi OI

doi

10.2174/1573409914666180516114314

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

363-369

issue

4

eissn

1573-4099

issn

1875-6697

pii

CAD-EPUB-90466

journal_volume

14

pub_type

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