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CERS4 CERS4 CERS2 CERS2 ACER2 ACER2 ACER1 ACER1 DEGS2 DEGS2 CERS6 CERS6 CERK CERK CERS3 CERS3 GBA2 GBA2 UGT8 UGT8 UGCG UGCG DEGS1 DEGS1 SGPP1 SGPP1 PPAP2A PPAP2A GALC GALC SGPP2 SGPP2 PPAP2C PPAP2C UBC UBC SGMS2 SGMS2 PPAP2B PPAP2B ASAH1 ASAH1 ASAH2 ASAH2 CERS1 CERS1 CERS5 CERS5
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splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
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CERKceramide kinase; Catalyzes specifically the phosphorylation of ceramide to form ceramide 1-phosphate. Acts efficiently on natural and analog ceramides (C6, C8, C16 ceramides, and C8-dihydroceramide), to a lesser extent on C2-ceramide and C6-dihydroceramide, but not on other lipids, such as various sphingosines. Binds phosphoinositides (537 aa)
SGPP1sphingosine-1-phosphate phosphatase 1; Has enzymatic activity against both sphingosine 1- phosphate (S1P) and dihydro-S1P. Regulates intracellular and extracellular S1P levels (441 aa)
CERS4ceramide synthase 4; 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 different fatty acid donors (N-linked stearoyl- (C18) or arachidoyl- (C20) ceramides) in a fumonisin B1-independent manner (By similarity) (394 aa)
GALCgalactosylceramidase; Hydrolyzes the galactose ester bonds of galactosylceramide, galactosylsphingosine, lactosylceramide, and monogalactosyldiglyceride. Enzyme with very low activity responsible for the lysosomal catabolism of galactosylceramide, a major lipid in myelin, kidney and epithelial cells of small intestine and colon (685 aa)
PPAP2Aphosphatidic acid phosphatase type 2A; 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) an [...] (285 aa)
CERS2ceramide synthase 2; Suppresses the growth of cancer cells. May be involved in sphingolipid synthesis (380 aa)
CERS3ceramide synthase 3; May be involved in sphingolipid synthesis or its regulation (By similarity) (383 aa)
ACER1alkaline ceramidase 1; 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) (264 aa)
CERS6ceramide synthase 6; May be involved in sphingolipid synthesis or its regulation (By similarity) (384 aa)
DEGS2delta(4)-desaturase, sphingolipid 2; Bifunctional enzyme which acts as both a sphingolipid delta(4)-desaturase and a sphingolipid C4-hydroxylase (By similarity) (323 aa)
UGT8UDP glycosyltransferase 8; Catalyzes the transfer of galactose to ceramide, a key enzymatic step in the biosynthesis of galactocerebrosides, which are abundant sphingolipids of the myelin membrane of the central nervous system and peripheral nervous system (541 aa)
SGPP2sphingosine-1-phosphate phosphatase 2; Has specific phosphohydrolase activity towards sphingoid base 1-phosphates. Has high phosphohydrolase activity against dihydrosphingosine-1-phosphate and sphingosine-1-phosphate (S1P) in vitro. May play a role in attenuating intracellular sphingosine 1-phosphate (S1P) signaling. May play a role in pro-inflammatory signaling (399 aa)
DEGS1delta(4)-desaturase, sphingolipid 1; Has sphingolipid-delta-4-desaturase activity. Converts D-erythro-sphinganine to D-erythro-sphingosine (E-sphing-4-enine) (323 aa)
CERS5ceramide synthase 5; 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) (392 aa)
PPAP2Cphosphatidic acid phosphatase type 2C; 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 (309 aa)
ACER2alkaline ceramidase 2; 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-eryth [...] (275 aa)
UBCubiquitin C (685 aa)
SGMS2sphingomyelin synthase 2; Sphingomyelin synthases synthesize the sphingolipid, sphingomyelin, through transfer of the phosphatidyl head group, phosphatidylcholine, on to the primary hydroxyl of ceramide. The reaction is bidirectional depending on the respective levels of the sphingolipid and ceramide. Plasma membrane SMS2 can also convert phosphatidylethanolamine (PE) to ceramide phosphatidylethanolamine (CPE). Major form in liver. Required for cell growth in certain cell types. Regulator of cell surface levels of ceramide, an important mediator of signal transduction and apoptosis. Re [...] (365 aa)
PPAP2Bphosphatidic acid phosphatase type 2B; 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 (311 aa)
UGCGUDP-glucose ceramide glucosyltransferase; Catalyzes the first glycosylation step in glycosphingolipid biosynthesis, the transfer of glucose to ceramide. May also serve as a "flippase" (394 aa)
GBA2glucosidase, beta (bile acid) 2; Non-lysosomal glucosylceramidase that catalyzes the conversion of glucosylceramide (GlcCer) 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 (927 aa)
ASAH1N-acylsphingosine amidohydrolase (acid ceramidase) 1; Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid (411 aa)
ASAH2N-acylsphingosine amidohydrolase (non-lysosomal ceramidase) 2; Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid at an optimal pH of 6.5-8.5. Acts as a key regulator of sphingolipid signaling metabolites by generating sphingosine at the cell surface. Acts as a repressor of apoptosis both by reducing C16-ceramide, thereby preventing ceramide-induced apoptosis, and generating sphingosine, a precursor of the antiapoptotic factor sphingosine 1-phosphate. Probably involved in the digestion of dietary sphingolipids in intestine by acting as a key enzyme for the catabo [...] (780 aa)
CERS1ceramide synthase 1; 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) (350 aa)
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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