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Ion mobility conformational lipid atlas for high confidence lipidomics
Lipids are highly structurally diverse molecules involved in a wide variety of biological processes. Here, we use high precision ion mobility-mass spectrometry to compile a structural database of 456 mass-resolved collision cross sections (CCS) of sphingolipid and glycerophospholipid species. Our CC...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395675/ https://www.ncbi.nlm.nih.gov/pubmed/30816114 http://dx.doi.org/10.1038/s41467-019-08897-5 |
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author | Leaptrot, Katrina L. May, Jody C. Dodds, James N. McLean, John A. |
author_facet | Leaptrot, Katrina L. May, Jody C. Dodds, James N. McLean, John A. |
author_sort | Leaptrot, Katrina L. |
collection | PubMed |
description | Lipids are highly structurally diverse molecules involved in a wide variety of biological processes. Here, we use high precision ion mobility-mass spectrometry to compile a structural database of 456 mass-resolved collision cross sections (CCS) of sphingolipid and glycerophospholipid species. Our CCS database comprises sphingomyelin, cerebroside, ceramide, phosphatidylethanolamine, phosphatidylcholine, phosphatidylserine, and phosphatidic acid classes. Primary differences observed are between lipid categories, with sphingolipids exhibiting 2–6% larger CCSs than glycerophospholipids of similar mass, likely a result of the sphingosine backbone’s restriction of the sn1 tail length, limiting gas-phase packing efficiency. Acyl tail length and degree of unsaturation are found to be the primary structural descriptors determining CCS magnitude, with degree of unsaturation being four times as influential per mass unit. The empirical CCS values and previously unmapped quantitative structural trends detailed in this work are expected to facilitate prediction of CCS in broadscale lipidomics research. |
format | Online Article Text |
id | pubmed-6395675 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63956752019-03-04 Ion mobility conformational lipid atlas for high confidence lipidomics Leaptrot, Katrina L. May, Jody C. Dodds, James N. McLean, John A. Nat Commun Article Lipids are highly structurally diverse molecules involved in a wide variety of biological processes. Here, we use high precision ion mobility-mass spectrometry to compile a structural database of 456 mass-resolved collision cross sections (CCS) of sphingolipid and glycerophospholipid species. Our CCS database comprises sphingomyelin, cerebroside, ceramide, phosphatidylethanolamine, phosphatidylcholine, phosphatidylserine, and phosphatidic acid classes. Primary differences observed are between lipid categories, with sphingolipids exhibiting 2–6% larger CCSs than glycerophospholipids of similar mass, likely a result of the sphingosine backbone’s restriction of the sn1 tail length, limiting gas-phase packing efficiency. Acyl tail length and degree of unsaturation are found to be the primary structural descriptors determining CCS magnitude, with degree of unsaturation being four times as influential per mass unit. The empirical CCS values and previously unmapped quantitative structural trends detailed in this work are expected to facilitate prediction of CCS in broadscale lipidomics research. Nature Publishing Group UK 2019-02-28 /pmc/articles/PMC6395675/ /pubmed/30816114 http://dx.doi.org/10.1038/s41467-019-08897-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Leaptrot, Katrina L. May, Jody C. Dodds, James N. McLean, John A. Ion mobility conformational lipid atlas for high confidence lipidomics |
title | Ion mobility conformational lipid atlas for high confidence lipidomics |
title_full | Ion mobility conformational lipid atlas for high confidence lipidomics |
title_fullStr | Ion mobility conformational lipid atlas for high confidence lipidomics |
title_full_unstemmed | Ion mobility conformational lipid atlas for high confidence lipidomics |
title_short | Ion mobility conformational lipid atlas for high confidence lipidomics |
title_sort | ion mobility conformational lipid atlas for high confidence lipidomics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395675/ https://www.ncbi.nlm.nih.gov/pubmed/30816114 http://dx.doi.org/10.1038/s41467-019-08897-5 |
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