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Cephalosol (1), a potent antimicrobial secondary metabolite with a new carbon skeleton, was characterized from the culture of Cephalosporium acremonium IFB-E007 that used to reside as an endophyte in Trachelospermum jasminoides (Apocynaceae). Its structure and absolute configuration were unambiguously determined by spectroscopic and computational approaches.

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Two novel probe-label-free electrochemical aptasensors based on methylene blue (MB)-anchored graphene oxide (GO) amplification were developed for thrombin (TB) and ATP detection, taking advantage of the specific binding affinity of the aptamer towards the target and the different affinities of GO for MB, ssDNA, dsDNA, and G-quadruplex.Scheme 1 Design of aptasensors for TB (A) and ATP (B) detection based on MBanchored GO amplification.

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