LIPID MAPS® Highlights — September, 2018

New tools and a new in-silico database

  • LipidFinder: A computational workflow for discovery of lipidsLipidFinder is an open-source Python workflow that searches a number of different databases to obtain putative identification of lipids, and assigns them to a class based on the LIPID MAPS classification system. The software quickly distinguishes and quantifies lipid-like features from contaminants, adducts and noise in high resolution liquid chromatography/mass spectrometry (LC/MS) datasets that have been pre-aligned using XCMS.
  • Search a computationally-generated database of oxidized glycerophospholipid chain-composition masses — A virtual database composed of major classes of oxidized lipid species has been generated from a list of commonly occuring acyl/alkyl chains (listed below). Chain positions and double bond regiochemistry and geometry are not specified. Search the database by entering a list of precursor ion m/z values in the text box, optionally restrict the search to certain lipid classes and then select an appropriate ion type and mass tolerance range.
  • LIPID MAPS In-Silico Structure Database (LMISSD) — The LIPID MAPS In-Silico Structure Database (LMISSD) is a relational database generated by computational expansion of headgroups and chains for a large number of commonly occurring lipid classes. It has been designed from an analytical chemistry perspective such that a hierarchy of sum composition, chain composition and exact structures may be browsed for the various lipid classes. It contains over 1.1 million structures and is a separate entity from the curated LIPID MAPS Structure Database (LMSD) which is a repository for experimentally identified lipids.

Lipidomic Profiling:
Hear it From an Expert
Bill Christie
Lipid Matters
A Personal Blog by Bill Christie
September 12, 2018

Another new fatty acid caught my eye this week that is novel in terms of both structure and function, i.e. one containing a tetrahydrofuran ring, i.e. (+)-(2S, 3S, 5R)-tetrahydro-3-hydroxy-5-[(1R)-1-hydroxyhexyl]-2-furanoctanoic acid, which is shown to be a secreted pheromone that…

Lipid of the Month
September, 2018
Oleic acid
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Oleic acid (Systematic Name:9Z-octadecenoic acid) is a monounaturated fatty acid whose name derives from the latin word 'oleum', which means oil. It is the most common fatty acid in nature, typically occurring in esterified form in glycerolipids and phospholipids. …

Tweets by LIPID MAPS®

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LIPID MAPS® Structure Database (LMSD) and Classification System

View lipid structures from a database of over 42,000 structures based on the first internationally accepted classification system.

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LIPID MAPS® Gene/Protein Database (LMPD)

A database of lipid-related genes and proteins a database of over 8500 genes and 12500 proteins across 10 major species

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Lipidomics Experimental Data

Submit your own lipidomics data, or view, access and analyze over 500 studies deposited in public repositories, as well as that generated by the LIPID MAPS® Consortium.

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Mass Spectrometry Tools

Perform MS searches on LMSD and high resolution LCMS datasets. Calculate exact mass of lipid ions or predict MS/MS spectra

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Lipid Structure Drawing Tools

Lipid structure-drawing tools for over 50 lipid classes available through online interfaces and REST services.

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Statistical Analyses Tools and Interfaces

Load your own table of processed data grouped by experimental conditions and perform online statistical analyses

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