Extraribosomal cyclic tetradepsipeptides beauverolides: profiling and modeling the fragmentation pathways

. 2004 Aug ; 39 (8) : 949-60.

Jazyk angličtina Země Velká Británie, Anglie Médium print

Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid15329847

Profiling of cyclic tetradepsipeptides beauverolides was tested as a chemotaxonomic tool for fungal strain identification/discrimination. Two new tetradepsipeptides, beauverolides Q and R, were characterized by tandem mass spectrometry. Specific elimination of 113 atomic mass units from both protonated and sodiated molecules of beauverolides is ubiquitous for all 12 most dominant congeners evaluated in this profiling study. Reconstruction of the total ion chromatogram, according to this neutral fragment release, was used for data filtering and selectivity enhancement. Selective ring opening and fragment ion formation of beauverolide I are discussed in detail utilizing high-level theoretical modeling of the fragmentation pathways.

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CYCLONE--a utility for de novo sequencing of microbial cyclic peptides

. 2013 Aug ; 24 (8) : 1177-84. [epub] 20130524

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