Predicting Glycerophosphoinositol Identities in Lipidomic Datasets Using VaLID (Visualization and Phospholipid Identification)—An Online Bioinformatic Search Engine

Table 1

Total number of species from each subclass that is included in VaLID.

Phospholipid subclass	LIPIDMAPS classification	Abbreviation	Number of species*
Glycerophosphates	GP10	PA	92073
Glyceropyrophosphates	GP11	PPA	92073
Glycerophosphocholines	GP01	PC	92073
Glycerophosphoethanolamines	GP02	PE	92073
Glycerophosphoglycerols	GP04	PG	92073
Glycerophosphoglycerophosphates	GP05	PGP	92073
Glycerophosphoinositols	GP06-09	PI, PIPx	736584
Glycerophosphoserines	GP03	PS	92073
Cytidine 5′-diphosphate glycerols	GP13	CDP-DG	92073
		Total	1473168

∗The calculated number of species does not include lipids formed by changing the position of the double bond beyond those represented in VaLID’s structural models. Each lipid m/z has been calculated for exact and average masses and can be searched using even and odd carbon chains with mass tolerance ranging from ±0.0001 to ±2 and MS ion modes [M + H]⁺, [M + K]⁺, [M + Li]⁺, [M + Na]⁺, [M – H]⁻, or [M (Neutral)].