Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides

The Feature-based Molecular Networking (FBMN) is a well-known approach for mapping and identifying structures and analogues. However, in the absence of prior knowledge about the molecular class, assessing specific fragments and clusters requires time-consuming manual validation. This study demonstra...

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Main Authors: Denise M. Selegato, Ana C. Zanatta, Alan C. Pilon, Juvenal H. Veloso, Ian Castro-Gamboa
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-08-01
Series:Frontiers in Molecular Biosciences
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmolb.2023.1238475/full
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author Denise M. Selegato
Ana C. Zanatta
Alan C. Pilon
Juvenal H. Veloso
Ian Castro-Gamboa
author_facet Denise M. Selegato
Ana C. Zanatta
Alan C. Pilon
Juvenal H. Veloso
Ian Castro-Gamboa
author_sort Denise M. Selegato
collection DOAJ
description The Feature-based Molecular Networking (FBMN) is a well-known approach for mapping and identifying structures and analogues. However, in the absence of prior knowledge about the molecular class, assessing specific fragments and clusters requires time-consuming manual validation. This study demonstrates that combining FBMN and Mass Spec Query Language (MassQL) is an effective strategy for accelerating the decoding mass fragmentation pathways and identifying molecules with comparable fragmentation patterns, such as beauvericin and its analogues. To accomplish this objective, a spectral similarity network was built from ESI-MS/MS experiments of Fusarium oxysporum at various collision energies (CIDs) and paired with a MassQL search query for conserved beauvericin ions. FBMN analysis revealed that sodiated and protonated ions clustered differently, with sodiated adducts needing more collision energy and exhibiting a distinct fragmentation pattern. Based on this distinction, two sets of particular fragments were discovered for the identification of these hexadepsipeptides: ([M + H]+) m/z 134, 244, 262, and 362 and ([M + Na]+) m/z 266, 284 and 384. By using these fragments, MassQL accurately found other analogues of the same molecular class and annotated beauvericins that were not classified by FBMN alone. Furthermore, FBMN analysis of sodiated beauvericins at 70 eV revealed subclasses with distinct amino acid residues, allowing distinction between beauvericins (beauvericin and beauvericin D) and two previously unknown structural isomers with an unusual methionine sulfoxide residue. In summary, our integrated method revealed correlations between adduct types and fragmentation patterns, facilitated the detection of beauvericin clusters, including known and novel analogues, and allowed for the differentiation between structural isomers.
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spelling doaj.art-e70170df81bb42ef95b12f7b89df87572023-08-01T08:50:35ZengFrontiers Media S.A.Frontiers in Molecular Biosciences2296-889X2023-08-011010.3389/fmolb.2023.12384751238475Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptidesDenise M. Selegato0Ana C. Zanatta1Alan C. Pilon2Juvenal H. Veloso3Ian Castro-Gamboa4Nucleus of Bioassays, Biosynthesis, and Ecophysiology of Natural Products (NuBBE), Institute of Chemistry, São Paulo State University (UNESP), Araraquara, BrazilNúcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Faculdade de Ciências Farmacêuticas, São Paulo University (USP), São Paulo, BrazilNucleus of Bioassays, Biosynthesis, and Ecophysiology of Natural Products (NuBBE), Institute of Chemistry, São Paulo State University (UNESP), Araraquara, BrazilNucleus of Bioassays, Biosynthesis, and Ecophysiology of Natural Products (NuBBE), Institute of Chemistry, São Paulo State University (UNESP), Araraquara, BrazilNucleus of Bioassays, Biosynthesis, and Ecophysiology of Natural Products (NuBBE), Institute of Chemistry, São Paulo State University (UNESP), Araraquara, BrazilThe Feature-based Molecular Networking (FBMN) is a well-known approach for mapping and identifying structures and analogues. However, in the absence of prior knowledge about the molecular class, assessing specific fragments and clusters requires time-consuming manual validation. This study demonstrates that combining FBMN and Mass Spec Query Language (MassQL) is an effective strategy for accelerating the decoding mass fragmentation pathways and identifying molecules with comparable fragmentation patterns, such as beauvericin and its analogues. To accomplish this objective, a spectral similarity network was built from ESI-MS/MS experiments of Fusarium oxysporum at various collision energies (CIDs) and paired with a MassQL search query for conserved beauvericin ions. FBMN analysis revealed that sodiated and protonated ions clustered differently, with sodiated adducts needing more collision energy and exhibiting a distinct fragmentation pattern. Based on this distinction, two sets of particular fragments were discovered for the identification of these hexadepsipeptides: ([M + H]+) m/z 134, 244, 262, and 362 and ([M + Na]+) m/z 266, 284 and 384. By using these fragments, MassQL accurately found other analogues of the same molecular class and annotated beauvericins that were not classified by FBMN alone. Furthermore, FBMN analysis of sodiated beauvericins at 70 eV revealed subclasses with distinct amino acid residues, allowing distinction between beauvericins (beauvericin and beauvericin D) and two previously unknown structural isomers with an unusual methionine sulfoxide residue. In summary, our integrated method revealed correlations between adduct types and fragmentation patterns, facilitated the detection of beauvericin clusters, including known and novel analogues, and allowed for the differentiation between structural isomers.https://www.frontiersin.org/articles/10.3389/fmolb.2023.1238475/fullMS/MS fragmentationbeauvericinfeature-based molecular networkingMassQLPCA
spellingShingle Denise M. Selegato
Ana C. Zanatta
Alan C. Pilon
Juvenal H. Veloso
Ian Castro-Gamboa
Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
Frontiers in Molecular Biosciences
MS/MS fragmentation
beauvericin
feature-based molecular networking
MassQL
PCA
title Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
title_full Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
title_fullStr Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
title_full_unstemmed Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
title_short Application of feature-based molecular networking and MassQL for the MS/MS fragmentation study of depsipeptides
title_sort application of feature based molecular networking and massql for the ms ms fragmentation study of depsipeptides
topic MS/MS fragmentation
beauvericin
feature-based molecular networking
MassQL
PCA
url https://www.frontiersin.org/articles/10.3389/fmolb.2023.1238475/full
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