The LIPID MAPS Structure Database (LMSD) is a relational database encompassing structures and annotations of biologically relevant lipids. As of 01/21/2019, LMSD contains 43307 unique lipid structures, making it the largest public lipid-only database in the world.More about LMSD | Classification-based search | Text/ontology-based search | Structure-based search | Programmatic Access | Download
The LIPID MAPS Gene/Proteome Database (LMPD) is comprised of lipid-related genes and proteins; LMPD contains data for over 8,500 genes and over 12,500 proteins from Homo sapiens, Mus musculus, Rattus norvegicus, Saccharomyces cerevisiae, Caenorhabditis elegans, Escherichia coli, Macaca mulata, Drosophila melanogaster, Arabidopsis thaliana and Danio rerio.Search LMPD by keyword or database ID | Browse LMPD by Gene Ontology (GO) annotations | Download
|Human (Homo sapiens)||1116||2273|
|Mouse (Mus musculus)||1082||1504|
|Rat (Rattus norvegicus)||1258||1315|
|Rhesus monkey (Macaca mulata)||891||1634|
|Yeast (Saccharomyces cerevisiae (s288c))||720||720|
|E. coli (Escherichia coli(K12))||245||245|
|C. elegans (Caenorhabditis elegans)||595||868|
|Drosophila (Drosophila melanogaster)||404||1064|
|Arabidopsis (Arabidopsis thaliana)||1829||2447|
|Zebrafish (Danio rerio)||638||647|
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 and a hierarchy of sum composition, chain composition and exact structures may be browsed for the various lipid classes. Reperesented categories are glycerolipids (MG, DG, TG, MGDG, DGDG, SQDG), glycerophospholipids (PC, PE, PS, PG, PI, PA, PGP, PIP(n), CL) and sphingolipids (Cer, SM, CerP, PE-Cer, PI-Cer, GlcCer, GalCer, LacCer). There are also a number of computationally generated fatty acyls (prostanes, furans) and sphingolipids (glycosphingolipids) that have been imported from LMSD. LMISSD currently has over 1.1 million structures (~ 25,000 of which overlap with LMSD). All entries have a LIPID MAPS ID, molfile, SMILES, InChIKey, exact mass, formula, systematic name and a set of abbreviations for sum composition, chain composition and exact structure.
COMP_DB is a virtual database composed of major classes of lipid species, generated from a list of commonly occuring acyl/alkyl chains. These "Bulk" lipid species indicate the number of carbons and number of double bonds, but not chain positions or double bond regiochemistry and geometry.
COMP_DB will generally return a higher number of lipids, however many of those may not be relevant to mammalian samples. If users prefer to search on a list that is more applicable to plasma or cells, then LMSD is recommended.