Target type: biologicalprocess
The chemical reactions and pathways resulting in the formation of ether lipids, lipids that contain (normally) one lipid alcohol in ether linkage to one of the carbon atoms (normally C-1) of glycerol. [GOC:ma, ISBN:0198547684, PMID:15337120]
Ether lipid biosynthesis is a complex metabolic pathway responsible for the production of ether lipids, a unique class of lipids characterized by an ether linkage between the glycerol backbone and the first fatty acid chain. This linkage, unlike the ester linkage found in conventional lipids, provides ether lipids with increased chemical stability and resistance to enzymatic degradation. Ether lipids are essential components of cellular membranes, particularly in the nervous system, heart, and lungs, where they play crucial roles in maintaining membrane fluidity, cell signaling, and protection against oxidative stress.
The biosynthesis of ether lipids begins with the conversion of dihydroxyacetone phosphate (DHAP) to 1-alkyl-2-acyl-glycerophosphoethanolamine (alkylacyl-GPE) by the enzyme alkylglycerone phosphate synthase (AGPS). This reaction involves the transfer of an alkyl chain from a long-chain alcohol to the sn-1 position of DHAP. Subsequently, the sn-2 position of the glycerol backbone is acylated by an acyl-CoA, forming alkylacyl-GPE.
Further modifications can occur depending on the specific ether lipid being synthesized. For example, the alkyl chain can be further elongated or modified by the addition of double bonds. Additionally, the phosphoethanolamine head group can be replaced with other polar head groups, such as choline or serine, leading to the formation of different ether lipid species.
Ether lipid biosynthesis is tightly regulated by various factors, including the availability of substrates, the activity of key enzymes, and cellular signaling pathways. Dysregulation of ether lipid biosynthesis has been implicated in various diseases, including cancer, cardiovascular disease, and neurological disorders. Therefore, understanding the complex mechanisms of ether lipid biosynthesis is essential for developing novel therapeutic strategies for these diseases.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| Dihydroxyacetone phosphate acyltransferase | A dihydroxyacetone phosphate acyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15228] | Homo sapiens (human) |
| Fatty acid synthase | A fatty acid synthase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P49327] | Homo sapiens (human) |
| Dihydroxyacetone phosphate acyltransferase | A dihydroxyacetone phosphate acyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15228] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| lansoprazole | Lansoprazole: A 2,2,2-trifluoroethoxypyridyl derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. Lansoprazole is a racemic mixture of (R)- and (S)-isomers. | benzimidazoles; pyridines; sulfoxide | anti-ulcer drug; EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor |
| omeprazole | 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole : A member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a [4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl group at position 2 and a methoxy group at position 5. omeprazole : A racemate comprising equimolar amounts of (R)- and (S)-omeprazole. Omeprazole: A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. | aromatic ether; benzimidazoles; pyridines; sulfoxide | |
| pantoprazole | pantoprazole : A member of the class of benzimidazoles that is 1H-benzimidazole substituted by a difluoromethoxy group at position 5 and a [(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl group at position 2. Pantoprazole: 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER. | aromatic ether; benzimidazoles; organofluorine compound; pyridines; sulfoxide | anti-ulcer drug; EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor; environmental contaminant; xenobiotic |
| rabeprazole | Rabeprazole: A 4-(3-methoxypropoxy)-3-methylpyridinyl derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. | benzimidazoles; pyridines; sulfoxide | anti-ulcer drug; EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor |
| chloramphenicol | Amphenicol: Chloramphenicol and its derivatives. | C-nitro compound; carboxamide; diol; organochlorine compound | antibacterial drug; antimicrobial agent; Escherichia coli metabolite; geroprotector; Mycoplasma genitalium metabolite; protein synthesis inhibitor |
| methionine | methionine : A sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4. Methionine: A sulfur-containing essential L-amino acid that is important in many body functions. | aspartate family amino acid; L-alpha-amino acid; methionine; methionine zwitterion; proteinogenic amino acid | antidote to paracetamol poisoning; human metabolite; micronutrient; mouse metabolite; nutraceutical |
| 3-hydroxyflavone | 3-hydroxyflavone: structure given in first source flavonol : A monohydroxyflavone that is the 3-hydroxy derivative of flavone. | flavonols; monohydroxyflavone | |
| carbenicillin | carbenicillin : A penicillin antibiotic having a 6beta-2-carboxy-2-phenylacetamido side-chain. Carbenicillin: Broad-spectrum semisynthetic penicillin derivative used parenterally. It is susceptible to gastric juice and penicillinase and may damage platelet function. | penicillin; penicillin allergen | antibacterial drug |
| epigallocatechin gallate | (-)-epigallocatechin 3-gallate : A gallate ester obtained by the formal condensation of gallic acid with the (3R)-hydroxy group of (-)-epigallocatechin. epigallocatechin gallate: a steroid 5alpha-reductase inhibitor and antimutagen in green tea (Camellia sinensis) | flavans; gallate ester; polyphenol | antineoplastic agent; antioxidant; apoptosis inducer; geroprotector; Hsp90 inhibitor; neuroprotective agent; plant metabolite |
| epicatechin | (-)-epicatechin : A catechin with (2R,3R)-configuration. | catechin; polyphenol | antioxidant |
| (+)-epicatechin | (+)-epicatechin : A catechin that is flavan carrying five hydroxy substituents at positions 3, 3', 4', 5 and 7 (the 2S,3S-stereoisomer). | catechin; polyphenol | cyclooxygenase 1 inhibitor; plant metabolite |
| s-adenosylhomocysteine | S-adenosyl-L-homocysteine : An organic sulfide that is the S-adenosyl derivative of L-homocysteine. S-Adenosylhomocysteine: 5'-S-(3-Amino-3-carboxypropyl)-5'-thioadenosine. Formed from S-adenosylmethionine after transmethylation reactions. | adenosines; amino acid zwitterion; homocysteine derivative; homocysteines; organic sulfide | cofactor; EC 2.1.1.72 [site-specific DNA-methyltransferase (adenine-specific)] inhibitor; EC 2.1.1.79 (cyclopropane-fatty-acyl-phospholipid synthase) inhibitor; epitope; fundamental metabolite |
| 5'-methylthioadenosine | 5'-methylthioadenosine: structure 5'-S-methyl-5'-thioadenosine : Adenosine with the hydroxy group at C-5' substituted with a methylthio (methylsulfanyl) group. | thioadenosine | algal metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite |
| egonol | egonol : A member of the class of 1-benzofurans that is 1-benzofuran substituted by a methoxy group at position 7, a 1,3-benzodioxol-5-yl group at position 2 and a 3-hydroxypropyl group at position 5. It has been isolated from Styrax agrestis. | 1-benzofurans; aromatic ether; benzodioxoles; primary alcohol | plant metabolite |
| orlistat | orlistat : A carboxylic ester resulting from the formal condensation of the carboxy group of N-formyl-L-leucine with the hydroxy group of (3S,4S)-3-hexyl-4-[(2S)-2-hydroxytridecyl]oxetan-2-one. A pancreatic lipase inhibitor, it is used as an anti-obesity drug. Orlistat: A lactone derivative of LEUCINE that acts as a pancreatic lipase inhibitor to limit the absorption of dietary fat; it is used in the management of obesity. | beta-lactone; carboxylic ester; formamides; L-leucine derivative | anti-obesity agent; bacterial metabolite; EC 2.3.1.85 (fatty acid synthase) inhibitor; EC 3.1.1.3 (triacylglycerol lipase) inhibitor |
| luteolin | 3'-hydroxyflavonoid; tetrahydroxyflavone | angiogenesis inhibitor; anti-inflammatory agent; antineoplastic agent; apoptosis inducer; c-Jun N-terminal kinase inhibitor; EC 2.3.1.85 (fatty acid synthase) inhibitor; immunomodulator; nephroprotective agent; plant metabolite; radical scavenger; vascular endothelial growth factor receptor antagonist | |
| gentisein | gentisein : A member of the class of xanthones that is 9H-xanthen-9-one substituted by hydroxy groups at positions 1, 3 and 7. gentisein: isolated from the methanol extract of the herb of Hypericum annulatum; structure in first source | polyphenol; xanthones | plant metabolite |
| mangostin | alpha-mangostin : A member of the class of xanthones that is 9H-xanthene substituted by hydroxy group at positions 1, 3 and 6, a methoxy group at position 7, an oxo group at position 9 and prenyl groups at positions 2 and 8. Isolated from the stems of Cratoxylum cochinchinense, it exhibits antioxidant, antimicrobial and antitumour activities. mangostin: xanthone from rind of Garcinia mangostana Linn. fruit | aromatic ether; phenols; xanthones | antimicrobial agent; antineoplastic agent; antioxidant; plant metabolite |
| norathyriol | norathyriol : A member of the class of xanthones that is 9H-xanthen-9-one substituted by hydroxy groups at positions 1, 3, 6 and 7. Isolated from Garcinia mangostana and Maclura pomifera, it exhibits inhibitory activity against protein kinase C. norathyriol: from Gentinanaceae; has vasorelaxing action on rat thoracic aorta; structure given in first source | polyphenol; xanthones | antineoplastic agent; EC 2.7.11.13 (protein kinase C) inhibitor; plant metabolite |
| cerulenin | cerulenin : An epoxydodecadienamide isolated from several species, including Acremonium, Acrocylindrum and Helicoceras. It inhibits the biosynthesis of several lipids by interfering with enzyme function. Cerulenin: An epoxydodecadienamide isolated from several species, including ACREMONIUM, Acrocylindrum, and Helicoceras. It inhibits the biosynthesis of several lipids by interfering with enzyme function. | epoxide; monocarboxylic acid amide | antifungal agent; antiinfective agent; antilipemic drug; antimetabolite; antimicrobial agent; fatty acid synthesis inhibitor |
| trans-10,cis-12-conjugated linoleic acid | (10E,12Z)-octadecadienoic acid : An octadeca-10,12-dienoic acid having (10E,12Z)-configuration. | octadeca-10,12-dienoic acid | |
| gamma-mangostin | gamma-mangostin : A member of the class of xanthones that is 9H-xanthene substituted by hydroxy group at positions 1, 3, 6 and 7, an oxo group at position 9 and prenyl groups at positions 2 and 8. Isolated from the stems of Cratoxylum cochinchinense, it exhibits antitumour activity. | phenols; xanthones | antineoplastic agent; plant metabolite; protein kinase inhibitor |
| beta-Mangostin | xanthones | ||
| 9-Hydroxycalabaxanthone | xanthones | ||
| 4-methylene-2-octyl-5-oxofuran-3-carboxylic acid | (2R,3S)-C75 : A 4-methylidene-2-octyl-5-oxotetrahydrofuran-3-carboxylic acid that has 2R,3S-configuration. 4-methylene-2-octyl-5-oxofuran-3-carboxylic acid: an anorectic fatty acid synthase inhibitor; structure in first source | 4-methylidene-2-octyl-5-oxotetrahydrofuran-3-carboxylic acid; gamma-lactone | |
| garcinone e | garcinone E: has potent cytotoxic effect against hepatocellular carcinoma cell lines; structure in first source | xanthones | |
| omdm 169 | OMDM 169: has antinociceptive activity; structure in first source | ||
| tetracycline | tetracycline : A broad-spectrum polyketide antibiotic produced by the Streptomyces genus of actinobacteria. Tetracycline: A naphthacene antibiotic that inhibits AMINO ACYL TRNA binding during protein synthesis. | ||
| gsk837149a | GSK837149A: structure in first source | ||
| gsk2194069 | GSK2194069: a beta-ketoacyl reductase inhibitor; structure in first source | ||
| thiolactomycin | thiolactomycin: from actinomycetes; structure given in first source |