RefMet Compound Details

RefMet ID, RefMet name, exact mass and formula
RefMet ID	RM0158390
RefMet name	LacCer 21:1;O2/17:0
Alternative name	LacCer(d21:1/17:0)
Systematic name	N-(heptadecanoyl)-1-beta-lactosyl-4E-heneicosasphingenine
Synonyms	PubChem Synonyms
Sum Composition	LacCer 38:1;O2	View other entries in RefMet with this sum composition
Exact mass	917.680344 (neutral)	Calculate m/z: (Choose adduct) [M+H]+ [M+H-H2O]+ [M.]+ [M+2H]2+ [M+3H]3+ [M+4H]4+ [M+K]+ [M+2K]2+ [M+2K-H]+ [M+Na]+ [M+2Na]2+ [M+2Na-H]+ [M+Li]+ [M+2Li]2+ [M+NH4]+ [M.CH3]+ [M+Ag]+ [M+H+CH3OH]+ [M+H+CH3CN]+ [M+H+2CH3CN]+ [M+Na+CH3CN]+ [M.NaFormate+H]+ [M.NH4Formate+H]+ [M.TMSi]+ [M.tBuDMSi]+ [M+H-Hexose]+ [M+H-EtnP]+ [M+H-SerP]+ [M-H]- [M-H-H2O]- [M-CH3]- [M-2H]2- [M-3H]3- [M-4H]4- [M+Cl]- [M+OAc]- [M+Na-2H]- [M+K-2H]- [M.Formate]- [M.NaFormate-H]- [M.NH4Formate-H]- [M.F]- [M-H-Ser]- [M.HF2]- M(neutral)    View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
Formula	C50H95NO13	View other entries in RefMet with this formula
Molecular descriptors
Molfile	90533 (Download molfile/View MW Metabolite Database details)
InChI	InChI=1S/C50H95NO13/c1-3-5-7-9-11-13-15-17-19-20-21-23-25-27-29-31-33-39(54)38(51-42(55)34-32-30-28-26-24-22-18-16-14-12-10-8-6-4- 2)37-61-49-47(60)45(58)48(41(36-53)63-49)64-50-46(59)44(57)43(56)40(35-52)62-50/h31,33,38-41,43-50,52-54,56-60H,3-30,32,34-37H2,1- 2H3,(H,51,55)/b33-31+/t38-,39+,40+,41+,43-,44-,45+,46+,47+,48+,49+,50-/m0/s1
InChIKey	KEVIXMDNIHYYHF-CRMMDXJYSA-N	View other enantiomers/diastereomers of this metabolite in RefMet
SMILES	CCCCCCCCCCCCCCCC/C=C/[C@H]([C@H](CO[C@H]1C(C([C@@H]([C@@H](CO)O1)O[C@H]1C(C([C@H]([C@@H](CO)O1)O)O)O)O)O)NC(=O)CCCCCCCCCCCCCCCC)O Run Tanimoto similarity search (with similarity coefficient >=0.6)
Chemical/Biochemical Classification
Super Class	Sphingolipids
Main Class	Glycosphingolipids
Sub Class	Hex2Cer (Dihexosyl ceramides)
Distribution of LacCer 21:1;O2/17:0 in NMDR studies
Species	Plot Species distribution
Sample source	Plot Sample source(tissue) distribution
Platform	Platform (MS/NMR) used for detection
Chromatography	Chromatography methods used for detection
Studies	NMDR Studies reporting LacCer 21:1;O2/17:0
External Links
Pubchem CID	145717477
LIPID MAPS	LMSP05019IOM
KEGG ID	C01290
Structural annotation level
Annotation level	1   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)

Table of KEGG reactions in human pathways involving LacCer 21:1;O2/17:0

Rxn ID	KEGG Reaction	Enzyme
R03354	Glucosylceramide + UDP-alpha-D-galactose <=> Lactosylceramide + UDP	UDP-alpha-D-galactose:beta-D-glucosyl-(1<->1)-ceramide 4-beta-D-galactosyltransferase
R03355	Lactosylceramide + H2O <=> Glucosylceramide + D-Galactose	beta-D-Galactosyl-1,4-beta-D-glucosylceramide galactohydrolase
R05937	CMP-N-acetylneuraminate + Lactosylceramide <=> CMP + GM3	CMP-N-acetylneuraminate + Lactosylceramide <=> CMP + GM3
R05938	UDP-N-acetyl-D-galactosamine + Lactosylceramide <=> UDP + GA2	UDP-N-acetyl-D-galactosamine + Lactosylceramide <=> UDP + GA2
R05971	UDP-N-acetyl-D-glucosamine + Lactosylceramide <=> UDP + Lc3Cer	UDP-N-acetyl-D-glucosamine + Lactosylceramide <=> UDP + Lc3Cer
R12960	3'-Phosphoadenylyl sulfate + Lactosylceramide <=> Adenosine 3',5'-bisphosphate + Lactosylceramide sulfate	3'-phosphoadenylyl-sulfate:lactosylceramide 3'-sulfotransferase
R12961	Lactosylceramide sulfate + H2O <=> Lactosylceramide + Sulfate	lactosylceramide-sulfate sulfohydrolase

Table of KEGG human pathways containing LacCer 21:1;O2/17:0

Pathway ID	Human Pathway	# of reactions
hsa00600	Sphingolipid metabolism	4
hsa00604	Glycosphingolipid biosynthesis - ganglio series	2
hsa01100	Metabolic pathways	2
hsa00601	Glycosphingolipid biosynthesis - lacto and neolacto series	1