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Application of a 2D-QSAR with a sine normalization method for the biodegradation of fluoroquinolones to poison cyanobacteria

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Abstract

Cyanobacteria are photosynthetic autotrophic aquatic prokaryotes. One of the methods for controlling cyanobacterial blooms is to destroy the phycobiliproteins required for photosynthesis. In this study, to improve the biodegradation of the fluoroquinolones through inhibit cyanobacteria, the molecular docking scores of 32 fluoroquinolones (FQs) with four categories of phycobiliproteins from cyanobacteria were calculated after sine normalization to characterize the binding ability between them. A two-dimensional quantitative structure-activity relationship (2D-QSAR) model was constructed based on the comprehensive scores. Danofloxacin (DAN) with the highest comprehensive score was chosen for molecular modification. When docking with four categories of phycobiliproteins from cyanobacteria, the docking values of DAN-11 and DAN-16 were increased up to 35.75%. Moreover, their functional characteristics and environmentally friendly predictive values were improved. When the DAN-11 and DAN-16 molecules docked with the other cyanobacterial phycobiliproteins, indicating that the designed DAN derivatives had general applicability to poison cyanobacteria, the weak interaction forces might increase the binding ability between the DAN derivatives and the receptor phycobiliprotein compared with the target molecule.

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Acknowledgments

We thank Wordvice company (https://wordvice.cn/) for English language editing.

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Minghao Li: Conceptualization, data curation, software, and writing (original draft). Meijin Du: Investigation, methodology. Ruihao Sun: writing (review and editing) and investigation. Wenhui Zhang: Investigation. Yilin Hou: Investigation. Yu Li: Methodology and writing (review and editing).

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Correspondence to Yu Li.

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The authors declare that they have no competing interests.

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Responsible Editor: Vitor Manuel Oliveira Vasconcelos

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Li, M., Du, M., Sun, R. et al. Application of a 2D-QSAR with a sine normalization method for the biodegradation of fluoroquinolones to poison cyanobacteria. Environ Sci Pollut Res 28, 11302–11316 (2021). https://doi.org/10.1007/s11356-020-11366-y

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  • DOI: https://doi.org/10.1007/s11356-020-11366-y

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