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The Antibacterial Activity and Mechanism of Ginkgolic Acid C15:1

The Antibacterial Activity and Mechanism of Ginkgolic Acid C15:1

Zhebin Hua, Caie Wu, Gongjian Fan, Zhenxing Tang, Fuliang Cao

BMC Biotechnol. 2017 Jan 14;17(1):5.

PMID: 28088196

Abstract:

Background:
The present study investigated the antibacterial activity and underlying mechanisms of ginkgolic acid (GA) C15:1 monomer using green fluorescent protein (GFP)-labeled bacteria strains.
Results:
GA presented significant antibacterial activity against Gram-positive bacteria but generally did not affect the growth of Gram-negative bacteria. The studies of the antibacterial mechanism indicated that large amounts of GA (C15:1) could penetrate GFP-labeled Bacillus amyloliquefaciens in a short period of time, and as a result, led to the quenching of GFP in bacteria. In vitro results demonstrated that GA (C15:1) could inhibit the activity of multiple proteins including DNA polymerase. In vivo results showed that GA (C15:1) could significantly inhibit the biosynthesis of DNA, RNA and B. amyloliquefaciens proteins.
Conclusion:
We speculated that GA (C15:1) achieved its antibacterial effect through inhibiting the protein activity of B. amyloliquefaciens. GA (C15:1) could not penetrate Gram-negative bacteria in large amounts, and the lipid soluble components in the bacterial cell wall could intercept GA (C15:1), which was one of the primary reasons that GA (C15:1) did not have a significant antibacterial effect on Gram-negative bacteria.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP22910607	Ginkgolic acid C15:1		22910-60-7	Price

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