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Table 6 Multifaceted identification of bovine brain lipid species by LipidXplorer

From: A novel informatics concept for high-throughput shotgun lipidomics based on the molecular fragmentation query language

Lipid classa Number of identified species Number of signature ions FAb FAOb HGb NLb MSc
PC 13 4 X Xd    X X
PC-O 17 4 X X   X X
LPC 4 3 X    X X
Cer 3 2      X X
CL 10 1      X
LCL 2 2      X X
DAG 13 1      X
PE 22 3 X X     X
PE-O 35 3 X X    X
LPE 4 2 X     X
PG 10 3 X X     X
PI 13 4 X X   X   X
PS 10 4 X X    X X
SM 7 2     X X
TAG 25 1      X
  1. aMFQL queries identifying species of these lipid classes are presented in Additional file 15. bFA, acyl anions of fatty acid moieties; FAO, product of the neutral loss of a fatty acid moiety from sn-2 position of the glycerol backbone; HG, fragment of the head group specific for all species of the same lipid class; NL, neutral loss of a fragment specific for all species of the same class; MS, precursor mass. cTwo X symbols indicate that precursor species of this class are detected in two molecular forms (for example, deprotonated ion and acetate adduct), or as doubly and singly charged ions. dTwo X symbols indicate that two signature ions of the same type are observed (for example, two acyl anions of both fatty acid moieties). Cer, ceramides; CL, cardiolipins; DAG, diacylglycerols; LCL, triacyl-lysocardiolipins; LPC, lysophosphatidylcholines; LPE; lyso-phosphatidylethanolamines; PC, phosphatidylcholines; PC-O, 1-alkyl-2-acylglycerophosphocholines; PE, phosphatidylethanolamines; PE-O, 1-alkyl-2-acylglycerophosphoethanolamines; PG, phosphatidylglycerols; PI, phosphatidylinositols; PS, phosphatidylserines; SM, sphingomyelins; TAG, triacylglycerols.