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Record Information
Version3.6
Creation Date2005-11-16 15:48:42 UTC
Update Date2013-05-29 19:25:18 UTC
HMDB IDHMDB00269
Secondary Accession NumbersNone
Metabolite Identification
Common NameSphinganine
DescriptionSphinganine is a blocker postlysosomal cholesterol transport by inhibition of low-density lipoprotein-induced esterification of cholesterol and cause unesterified cholesterol to accumulate in perinuclear vesicles. It has been suggested the possibility that endogenous sphinganine may inhibit cholesterol transport in Niemann-Pick Type C (NPC) disease. (PMID 1817037 ).
Structure
Thumb
Synonyms
  1. 2-Amino-D-erythro-1,3-Octadecanediol
  2. C18-dihydro-Sphingosine
  3. C18-Dihydrosphingosine
  4. D-Erythro-1,3-Dihydroxy-2-aminooctadecane
  5. D-Erythro-2-Amino-1,3-octadecanediol
  6. D-Erythro-C18-Dihydrosphingosine
  7. D-Erythro-Sphinganine
  8. Dihydro-C18-sphingosine
  9. Dihydrosphingosine
  10. Erythro-Sphinganine
  11. Octadecasphinganine
  12. Sphinganine
  13. [R-(R*,S*)]-2-amino-1,3-Octadecanediol
Chemical FormulaC18H39NO2
Average Molecular Weight301.5078
Monoisotopic Molecular Weight301.298079497
IUPAC Name(2S,3R)-2-aminooctadecane-1,3-diol
Traditional Namesphinganine
CAS Registry Number764-22-7
SMILES
CCCCCCCCCCCCCCC[C@@H](O)[C@@H](N)CO
InChI Identifier
InChI=1S/C18H39NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(21)17(19)16-20/h17-18,20-21H,2-16,19H2,1H3/t17-,18+/m0/s1
InChI KeyOTKJDMGTUTTYMP-ZWKOTPCHSA-N
Chemical Taxonomy
KingdomOrganic Compounds
Super ClassLipids
ClassSphingolipids
Sub ClassN/A
Other Descriptors
  • 2-aminooctadecane-1,3-diol(ChEBI)
  • Aliphatic Acyclic Compounds
  • Sphinganines(KEGG)
  • Sphinganines(Lipidmaps)
Substituents
  • 1,2 Aminoalcohol
  • Primary Alcohol
  • Primary Aliphatic Amine (Alkylamine)
  • Secondary Alcohol
Direct ParentSphingolipids
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
  • Food
Biofunction
  • Cell signaling
  • Fuel and energy storage
  • Fuel or energy source
  • Membrane integrity/stability
Application
  • Nutrients
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Cytoplasm
  • Extracellular
  • Membrane (predicted from logP)
  • Endoplasmic reticulum
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.0045ALOGPS
logP5.2ALOGPS
logP4.77ChemAxon
logS-4.8ALOGPS
pKa (Strongest Acidic)14.42ChemAxon
pKa (Strongest Basic)9.29ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area66.48 Å2ChemAxon
Rotatable Bond Count16ChemAxon
Refractivity90.93 m3·mol-1ChemAxon
Polarizability40.49 Å3ChemAxon
Spectra
SpectraGC-MSMS/MSLC-MS1D NMR2D NMR
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane (predicted from logP)
  • Endoplasmic reticulum
Biofluid Locations
  • Blood
  • Urine
Tissue Location
  • Fibroblasts
  • Intestine
  • Kidney
  • Liver
  • Platelet
  • Spleen
  • Stratum Corneum
  • Thyroid Gland
Pathways
NameSMPDB LinkKEGG Link
Sphingolipid MetabolismSMP00034map00500
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.011 +/- 0.00033 uMAdult (>18 years old)BothNormal details
UrineDetected and Quantified0.00023 +/- 0.00020 umol/mmol creatinineAdult (>18 years old)BothNormal details
UrineDetected and Quantified0.000013 +/- 0.0000059 umol/mmol creatinineAdult (>18 years old)FemaleNormal details
Abnormal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
UrineDetected and Quantified0.00011 +/- 0.00015 umol/mmol creatinineAdult (>18 years old)FemalePregnancy details
Associated Disorders and Diseases
Disease References
Pregnancy
  1. Ribar S, Mesaric M, Sedic M: Sphingoid bases as possible diagnostic parameters. Croat Med J. 2003 Apr;44(2):165-70. Pubmed: 12698507
Associated OMIM IDsNone
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB021924
KNApSAcK IDNot Available
Chemspider ID82609
KEGG Compound IDC00836
BioCyc IDNot Available
BiGG ID36159
Wikipedia LinkNot Available
NuGOwiki LinkHMDB00269
Metagene LinkHMDB00269
METLIN ID5268
PubChem Compound91486
PDB IDNot Available
ChEBI ID16566
References
Synthesis ReferenceRoush, William R.; Adam, Michael A. Directed openings of 2,3-epoxy alcohols via reactions with isocyanates: synthesis of (+)-erythro-dihydrosphingosine. Journal of Organic Chemistry (1985), 50(20), 3752-7.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Ribar S, Mesaric M, Bauman M: High-performance liquid chromatographic determination of sphinganine and sphingosine in serum and urine of subjects from an endemic nephropathy area in Croatia. J Chromatogr B Biomed Sci Appl. 2001 Apr 25;754(2):511-9. Pubmed: 11339295
  2. van der Westhuizen L, Shephard GS, van Schalkwyk DJ: The effect of repeated gavage doses of fumonisin B1 on the sphinganine and sphingosine levels in vervet monkeys. Toxicon. 2001 Jul;39(7):969-72. Pubmed: 11223085
  3. van der Westhuizen L, Brown NL, Marasas WF, Swanevelder S, Shephard GS: Sphinganine/sphingosine ratio in plasma and urine as a possible biomarker for fumonisin exposure in humans in rural areas of Africa. Food Chem Toxicol. 1999 Dec;37(12):1153-8. Pubmed: 10654591
  4. Deguchi H, Yegneswaran S, Griffin JH: Sphingolipids as bioactive regulators of thrombin generation. J Biol Chem. 2004 Mar 26;279(13):12036-42. Epub 2004 Jan 13. Pubmed: 14722105
  5. Flamand N, Justine P, Bernaud F, Rougier A, Gaetani Q: In vivo distribution of free long-chain sphingoid bases in the human stratum corneum by high-performance liquid chromatographic analysis of strippings. J Chromatogr B Biomed Appl. 1994 Jun 3;656(1):65-71. Pubmed: 7952048
  6. Martinez G, Jimenez-Sanchez G, Divry P, Vianey-Saban C, Riudor E, Rodes M, Briones P, Ribes A: Plasma free fatty acids in mitochondrial fatty acid oxidation defects. Clin Chim Acta. 1997 Nov 28;267(2):143-54. Pubmed: 9469249
  7. Berg C, Trofast C, Bengtsson T: Platelets induce reactive oxygen species-dependent growth of human skin fibroblasts. Eur J Cell Biol. 2003 Nov;82(11):565-71. Pubmed: 14703013
  8. Voss KA, Plattner RD, Riley RT, Meredith FI, Norred WP: In vivo effects of fumonisin B1-producing and fumonisin B1-nonproducing Fusarium moniliforme isolates are similar: fumonisins B2 and B3 cause Mycopathologia. 1998;141(1):45-58. Pubmed: 9725030
  9. Bouchon B, Portoukalian J, Orgiazzi J, Bornet H: Selective enrichment of phytosphingosine in glycosphingolipids of isolated human thyrocytes as compared to the whole thyroid. Biochem Biophys Res Commun. 1987 Mar 30;143(3):827-31. Pubmed: 3566758
  10. Dragusin M, Gurgui C, Schwarzmann G, Hoernschemeyer J, van Echten-Deckert G: Metabolism of the unnatural anticancer lipid safingol, L-threo-dihydrosphingosine, in cultured cells. J Lipid Res. 2003 Sep;44(9):1772-9. Epub 2003 Jun 1. Pubmed: 12777464
  11. Sharma N, He Q, Sharma RP: Sphingosine kinase activity confers resistance to apoptosis by fumonisin B1 in human embryonic kidney (HEK-293) cells. Chem Biol Interact. 2004 Dec 30;151(1):33-42. Pubmed: 15607760
  12. Bibel DJ, Aly R, Shinefield HR: Topical sphingolipids in antisepsis and antifungal therapy. Clin Exp Dermatol. 1995 Sep;20(5):395-400. Pubmed: 8593716
  13. Dyatlovitskaya EV, Kandyba AG, Kozlov AM, Somova OG: Sphinganine in sphingomyelins of tumors and mouse regenerating liver. Biochemistry (Mosc). 2001 May;66(5):502-4. Pubmed: 11405884
  14. Zimber A, Chedeville A, Gespach C, Abita JP: Inhibition of proliferation and induction of monocytic differentiation on HL60 human promyelocytic leukemia cells treated with bile acids in vitro. Int J Cancer. 1994 Oct 1;59(1):71-7. Pubmed: 7927907
  15. Rodriguez-Lafrasse C, Rousson R, Pentchev PG, Louisot P, Vanier MT: Free sphingoid bases in tissues from patients with type C Niemann-Pick disease and other lysosomal storage disorders. Biochim Biophys Acta. 1994 May 25;1226(2):138-44. Pubmed: 8204660
  16. Roff CF, Goldin E, Comly ME, Cooney A, Brown A, Vanier MT, Miller SP, Brady RO, Pentchev PG: Type C Niemann-Pick disease: use of hydrophobic amines to study defective cholesterol transport. Dev Neurosci. 1991;13(4-5):315-9. Pubmed: 1817037

Only showing the first 50 proteins. There are 60 proteins in total.

Enzymes

General function:
Involved in catalytic activity
Specific function:
Catalyzes the conversion of phosphatidic acid (PA) to diacylglycerol (DG). In addition it hydrolyzes lysophosphatidic acid (LPA), ceramide-1-phosphate (C-1-P) and sphingosine-1-phosphate (S-1-P). The relative catalytic efficiency is PA > C-1-P > LPA > S-1-P.
Gene Name:
PPAP2C
Uniprot ID:
O43688
Molecular weight:
32573.435
Reactions
Sphinganine 1-phosphate + Water → Sphinganine + Phosphoric aciddetails
General function:
Involved in catalytic activity
Specific function:
Broad-specificity phosphohydrolase that dephosphorylates exogenous bioactive glycerolipids and sphingolipids. Catalyzes the conversion of phosphatidic acid (PA) to diacylglycerol (DG). Pivotal regulator of lysophosphatidic acid (LPA) signaling in the cardiovascular system. Major enzyme responsible of dephosphorylating LPA in platelets, which terminates signaling actions of LPA. May control circulating, and possibly also regulate localized, LPA levels resulting from platelet activation. It has little activity towards ceramide-1-phosphate (C-1-P) and sphingosine-1-phosphate (S-1-P). The relative catalytic efficiency is LPA > PA > S-1-P > C-1-P. It's down-regulation may contribute to the development of colon adenocarcinoma.
Gene Name:
PPAP2A
Uniprot ID:
O14494
Molecular weight:
32155.715
Reactions
Sphinganine 1-phosphate + Water → Sphinganine + Phosphoric aciddetails
General function:
Involved in catalytic activity
Specific function:
Catalyzes the conversion of phosphatidic acid (PA) to diacylglycerol (DG). In addition it hydrolyzes lysophosphatidic acid (LPA), ceramide-1-phosphate (C-1-P) and sphingosine-1-phosphate (S-1-P). The relative catalytic efficiency is LPA = PA > C-1-P > S-1-P. May be involved in cell adhesion and in cell-cell interactions.
Gene Name:
PPAP2B
Uniprot ID:
O14495
Molecular weight:
35115.61
Reactions
Sphinganine 1-phosphate + Water → Sphinganine + Phosphoric aciddetails
General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
Catalyzes the formation of some glycolipid via the addition of N-acetylgalactosamine (GalNAc) in alpha-1,3-linkage to some substrate. Glycolipids probably serve for adherence of some pathogens
Gene Name:
GBGT1
Uniprot ID:
Q8N5D6
Molecular weight:
40126.9
General function:
Involved in N-acetylglucosaminylphosphatidylinositol de
Specific function:
Involved in the second step of GPI biosynthesis. De-N-acetylation of N-acetylglucosaminyl-phosphatidylinositol.
Gene Name:
PIGL
Uniprot ID:
Q9Y2B2
Molecular weight:
28530.965
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltransferase activity
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGQ
Uniprot ID:
Q9BRB3
Molecular weight:
65343.25
General function:
Involved in biosynthetic process
Specific function:
Necessary for the synthesis of N-acetylglucosaminyl-phosphatidylinositol, the very early intermediate in GPI-anchor biosynthesis.
Gene Name:
PIGA
Uniprot ID:
P37287
Molecular weight:
54126.065
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltr
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGH
Uniprot ID:
Q14442
Molecular weight:
21080.415
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltr
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGP
Uniprot ID:
P57054
Molecular weight:
18089.055
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltransferase activity
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGC
Uniprot ID:
Q92535
Molecular weight:
33582.18
General function:
Involved in diacylglycerol kinase activity
Specific function:
Catalyzes the phosphorylation of sphingosine to form sphingosine 1-phosphate (SPP), a lipid mediator with both intra- and extracellular functions. Also acts on D-erythro-sphingosine and to a lesser extent sphinganine, but not other lipids, such as D,L-threo-dihydrosphingosine, N,N-dimethylsphingosine, diacylglycerol, ceramide, or phosphatidylinositol.
Gene Name:
SPHK1
Uniprot ID:
Q9NYA1
Molecular weight:
42517.245
Reactions
Adenosine triphosphate + Sphinganine → ADP + Sphinganine 1-phosphatedetails
General function:
Involved in diacylglycerol kinase activity
Specific function:
Catalyzes the phosphorylation of sphingosine to form sphingosine 1-phosphate (SPP), a lipid mediator with both intra- and extracellular functions. Also acts on D-erythro-dihydrosphingosine, D-erythro-sphingosine and L-threo-dihydrosphingosine. Binds phosphoinositides.
Gene Name:
SPHK2
Uniprot ID:
Q9NRA0
Molecular weight:
69216.375
Reactions
Adenosine triphosphate + Sphinganine → ADP + Sphinganine 1-phosphatedetails
General function:
Involved in lipid metabolic process
Specific function:
Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid.
Gene Name:
ASAH1
Uniprot ID:
Q13510
Molecular weight:
44045.27
General function:
Involved in sphingolipid activator protein activity
Specific function:
Binds gangliosides and stimulates ganglioside GM2 degradation. It stimulates only the breakdown of ganglioside GM2 and glycolipid GA2 by beta-hexosaminidase A. It extracts single GM2 molecules from membranes and presents them in soluble form to beta-hexosaminidase A for cleavage of N-acetyl-D-galactosamine and conversion to GM3
Gene Name:
GM2A
Uniprot ID:
P17900
Molecular weight:
20838.1
General function:
Involved in immune response
Specific function:
T-cell surface glycoprotein CD1e, soluble is required for the presentation of glycolipid antigens on the cell surface. The membrane-associated form is not active
Gene Name:
CD1E
Uniprot ID:
P15812
Molecular weight:
43626.1
General function:
Involved in cholesterol binding
Specific function:
May be involved in the regulation of the lipid composition of sperm membranes during the maturation in the epididymis
Gene Name:
NPC2
Uniprot ID:
P61916
Molecular weight:
16570.1
General function:
Involved in sphingosine N-acyltransferase activity
Specific function:
May be either a bona fide (dihydro)ceramide synthase or a modulator of its activity. When overexpressed in cells is involved in the production of sphingolipids containing mainly one fatty acid donor (N-linked stearoyl- (C18) ceramide) in a fumonisin B1-independent manner (By similarity).
Gene Name:
CERS1
Uniprot ID:
P27544
Molecular weight:
Not Available
Reactions
Acyl-CoA + Sphinganine → Coenzyme A + Dihydroceramidedetails
General function:
Involved in immune response
Specific function:
Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells
Gene Name:
CD1D
Uniprot ID:
P15813
Molecular weight:
37717.0
General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
Mannosyltransferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers the first alpha-1,4-mannose to GlcN-acyl-PI during GPI precursor assembly
Gene Name:
PIGM
Uniprot ID:
Q9H3S5
Molecular weight:
49459.2
General function:
Involved in transferase activity, transferring acyl groups
Specific function:
Probable acetyltransferase, which acetylates the inositol ring of phosphatidylinositol during biosynthesis of GPI-anchor. Acetylation during GPI-anchor biosynthesis is not essential for the subsequent mannosylation and is usually removed soon after the attachment of GPIs to proteins (By similarity).
Gene Name:
PIGW
Uniprot ID:
Q7Z7B1
Molecular weight:
Not Available
General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the reduction of 3-ketodihydrosphingosine (KDS) to dihydrosphingosine (DHS).
Gene Name:
KDSR
Uniprot ID:
Q06136
Molecular weight:
36186.785
Reactions
Sphinganine + NADP → 3-Dehydrosphinganine + NADPHdetails
Sphinganine + NADP → 3-Dehydrosphinganine + NADPH + Hydrogen Iondetails
General function:
Involved in GPI anchor biosynthetic process
Specific function:
Essential component of glycosylphosphatidylinositol- mannosyltransferase 1 which transfers the first of the 4 mannoses in the GPI-anchor precursors during GPI-anchor biosynthesis. Probably acts by stabilizing the mannosyltransferase PIGM
Gene Name:
PIGX
Uniprot ID:
Q8TBF5
Molecular weight:
28788.1
General function:
Involved in transferase activity, transferring glycosyl groups
Specific function:
Mannosyltransferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers a fourth mannose to some trimannosyl-GPIs during GPI precursor assembly. The presence of a fourth mannose in GPI is facultative and only scarcely detected, suggesting that it only exists in some tissues
Gene Name:
PIGZ
Uniprot ID:
Q86VD9
Molecular weight:
63472.6
General function:
Involved in galactosyltransferase activity
Specific function:
Beta-1,3-N-acetylglucosaminyltransferase that plays a key role in the synthesis of lacto- or neolacto-series carbohydrate chains on glycolipids, notably by participating in biosynthesis of HNK-1 and Lewis X carbohydrate structures. Has strong activity toward lactosylceramide (LacCer) and neolactotetraosylceramide (nLc(4)Cer; paragloboside), resulting in the synthesis of Lc(3)Cer and neolactopentaosylceramide (nLc(5)Cer), respectively. Probably plays a central role in regulating neolacto-series glycolipid synthesis during embryonic development.
Gene Name:
B3GNT5
Uniprot ID:
Q9BYG0
Molecular weight:
44052.295
General function:
Involved in galactosyltransferase activity
Specific function:
Catalyzes the transfer of Gal to GlcNAc-based acceptors with a preference for the core3 O-linked glycan GlcNAc(beta1,3)GalNAc structure. Can use glycolipid LC3Cer as an efficient acceptor
Gene Name:
B3GALT5
Uniprot ID:
Q9Y2C3
Molecular weight:
36188.9
General function:
Involved in transferase activity, transferring glycosyl groups
Specific function:
Mannosyltransferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers the third alpha-1,2-mannose to Man2-GlcN-acyl-PI during GPI precursor assembly
Gene Name:
PIGB
Uniprot ID:
Q92521
Molecular weight:
65055.9
General function:
Involved in GPI anchor biosynthetic process
Specific function:
Involved in GPI-anchor biosynthesis through the transfer of ethanolamine phosphate to the third mannose of GPI
Gene Name:
PIGF
Uniprot ID:
Q07326
Molecular weight:
24889.3
General function:
Involved in catalytic activity
Specific function:
Ethanolamine phosphate transferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers ethanolamine phosphate to the GPI second mannose
Gene Name:
PIGG
Uniprot ID:
Q5H8A4
Molecular weight:
108171.7
General function:
Involved in catalytic activity
Specific function:
Ethanolamine phosphate transferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers ethanolamine phosphate to the first alpha-1,4-linked mannose of the glycosylphosphatidylinositol precursor of GPI-anchor
Gene Name:
PIGN
Uniprot ID:
O95427
Molecular weight:
105809.2
General function:
Involved in catalytic activity
Specific function:
Ethanolamine phosphate transferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers ethanolamine phosphate to the GPI third mannose which links the GPI-anchor to the C-terminus of the proteins by an amide bond
Gene Name:
PIGO
Uniprot ID:
Q8TEQ8
Molecular weight:
118697.6
General function:
Involved in protein binding
Specific function:
Component of the GPI transamidase complex. Essential for transfer of GPI to proteins, particularly for formation of carbonyl intermediates
Gene Name:
PIGS
Uniprot ID:
Q96S52
Molecular weight:
61655.5
General function:
Involved in protein binding
Specific function:
Component of the GPI transamidase complex. Essential for transfer of GPI to proteins, particularly for formation of carbonyl intermediates
Gene Name:
PIGT
Uniprot ID:
Q969N2
Molecular weight:
65699.0
General function:
Involved in GPI anchor biosynthetic process
Specific function:
Component of the GPI transamidase complex. May be involved in the recognition of either the GPI attachment signal or the lipid portion of GPI
Gene Name:
PIGU
Uniprot ID:
Q9H490
Molecular weight:
50051.2
General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
Alpha-1,6-mannosyltransferase involved in glycosylphosphatidylinositol-anchor biosynthesis. Transfers the second mannose to the glycosylphosphatidylinositol during GPI precursor assembly
Gene Name:
PIGV
Uniprot ID:
Q9NUD9
Molecular weight:
55712.1
General function:
Involved in GPI anchor biosynthetic process
Specific function:
Component of the GPI-GlcNAc transferase (GPI-GnT) complex in the endoplasmic reticulum, a complex that catalyzes transfer of GlcNAc from UDP-GlcNAc to an acceptor phosphatidylinositol, the first step in the production of GPI- anchors for cell surface proteins. May act by regulating the catalytic subunit PIGA
Gene Name:
PIGY
Uniprot ID:
Q3MUY2
Molecular weight:
8057.5
General function:
Involved in glycolipid transporter activity
Specific function:
Involved in TGN-to-plasma membrane transport and in the formation of post-Golgi constitutive carriers. May play a role in ensuring the coordination of the budding and the fission reactions
Gene Name:
PLEKHA8
Uniprot ID:
Q96JA3
Molecular weight:
58306.0
General function:
Involved in hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides
Specific function:
Hydrolyzes only phytoceramide into phytosphingosine and free fatty acid. Does not have reverse activity.
Gene Name:
ACER3
Uniprot ID:
Q9NUN7
Molecular weight:
Not Available
Reactions
Dihydroceramide + Water → Fatty acid + Sphinganinedetails
General function:
Involved in hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides
Specific function:
Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid. Unsaturated long-chain ceramides are the best substrates, saturated long-chain ceramides and unsaturated very long-chain ceramides are good substrates, whereas saturated very long-chain ceramides and short-chain ceramides were poor substrates. The substrate preference is D-erythro-C(18:1)-, C(20:1)-, C(20:4)-ceramide > D-erythro-C(16:0)-, C(18:0), C(20:0)-ceramide > D-erythro-C(24:1)-ceramide > D-erythro-C(12:0)-ceramide, D-erythro-C(14:0)-ceramides > D-erythro-C(24:0)-ceramide > D-erythro-C(6:0)-ceramide. Inhibits the maturation of protein glycosylation in the Golgi complex, including that of integrin beta-1 (ITGB1) and of LAMP1, by increasing the levels of sphingosine. Inhibits cell adhesion by reducing the level of ITGB1 in the cell surface. May have a role in cell proliferation and apoptosis that seems to depend on the balance between sphingosine and sphingosine-1-phosphate.
Gene Name:
ACER2
Uniprot ID:
Q5QJU3
Molecular weight:
31308.85
Reactions
Dihydroceramide + Water → Fatty acid + Sphinganinedetails
General function:
Involved in catalytic activity
Specific function:
Non-lysosomal glucosylceramidase that catalyzes the conversion of glucosylceramide to free glucose and ceramide. Involved in sphingomyelin generation and prevention of glycolipid accumulation. May also catalyze the hydrolysis of bile acid 3-O-glucosides, however, the relevance of such activity is unclear in vivo.
Gene Name:
GBA2
Uniprot ID:
Q9HCG7
Molecular weight:
104648.13
General function:
Involved in diacylglycerol kinase activity
Specific function:
Not Available
Gene Name:
SPHK1
Uniprot ID:
Q96GK1
Molecular weight:
43943.9
General function:
Involved in hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides
Specific function:
Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid at an optimal pH of 8.0. Has a highly restricted substrate specificity for the natural stereoisomer of ceramide with D-erythro-sphingosine but not D-ribo-phytosphingosine or D-erythro-dihydrosphingosine as a backbone. May have a role in regulating the levels of bioactive lipids ceramide and sphingosine 1-phosphate, as well as complex sphingolipids (By similarity).
Gene Name:
ACER1
Uniprot ID:
Q8TDN7
Molecular weight:
31095.165
Reactions
Dihydroceramide + Water → Fatty acid + Sphinganinedetails
General function:
Involved in sequence-specific DNA binding transcription factor activity
Specific function:
May be either a bona fide (dihydro)ceramide synthase or a modulator of its activity. When overexpressed in cells is involved in the production of sphingolipids containing mainly one fatty acid donor (N-linked palmitoyl- (C16) ceramide) in a fumonisin B1-independent manner (By similarity).
Gene Name:
CERS5
Uniprot ID:
Q8N5B7
Molecular weight:
Not Available
Reactions
Acyl-CoA + Sphinganine → Coenzyme A + Dihydroceramidedetails
General function:
Involved in cysteine-type endopeptidase activity
Specific function:
Mediates GPI anchoring in the endoplasmic reticulum, by replacing a protein's C-terminal GPI attachment signal peptide with a pre-assembled GPI. During this transamidation reaction, the GPI transamidase forms a carbonyl intermediate with the substrate protein
Gene Name:
PIGK
Uniprot ID:
Q92643
Molecular weight:
45251.4
General function:
Involved in tubulin binding
Specific function:
Essential for GPI-anchoring of precursor proteins but not for GPI synthesis. Acts before or during formation of the carbonyl intermediate
Gene Name:
GPAA1
Uniprot ID:
O43292
Molecular weight:
67622.5
General function:
Involved in glycolipid transporter activity
Specific function:
Not Available
Gene Name:
PLEKHA9
Uniprot ID:
O95397
Molecular weight:
43538.3
General function:
Involved in glycolipid transporter activity
Specific function:
Not Available
Gene Name:
GLTPD2
Uniprot ID:
A6NH11
Molecular weight:
31641.2
General function:
Involved in glycolipid transporter activity
Specific function:
Not Available
Gene Name:
PLEKHA8
Uniprot ID:
B5MDU3
Molecular weight:
49308.8
General function:
Involved in immune response
Specific function:
Antigen-presenting protein that binds self and non-self lipid and glycolipid antigens and presents them to T-cell receptors on natural killer T-cells
Gene Name:
CD1A
Uniprot ID:
P06126
Molecular weight:
37077.1
General function:
Involved in glycolipid transporter activity
Specific function:
Not Available
Gene Name:
GLTPD1
Uniprot ID:
Q5TA50
Molecular weight:
24364.8
General function:
Involved in immune response
Specific function:
Antigen-presenting protein that binds self and non-self lipid and glycolipid antigens and presents them to T-cell receptors on natural killer T-cells
Gene Name:
CD1C
Uniprot ID:
P29017
Molecular weight:
37653.7

Only showing the first 50 proteins. There are 60 proteins in total.