Page last updated: 2024-10-24

ether lipid biosynthetic process

Definition

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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Proteins (3)

ProteinDefinitionTaxonomy
Dihydroxyacetone phosphate acyltransferaseA dihydroxyacetone phosphate acyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15228]Homo sapiens (human)
Fatty acid synthaseA fatty acid synthase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P49327]Homo sapiens (human)
Dihydroxyacetone phosphate acyltransferaseA dihydroxyacetone phosphate acyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15228]Homo sapiens (human)

Compounds (31)

CompoundDefinitionClassesRoles
lansoprazoleLansoprazole: 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
omeprazole5-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
pantoprazolepantoprazole : 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
rabeprazoleRabeprazole: 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
chloramphenicolAmphenicol: 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
methioninemethionine : 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-hydroxyflavone3-hydroxyflavone: structure given in first source

flavonol : A monohydroxyflavone that is the 3-hydroxy derivative of flavone.
flavonols;
monohydroxyflavone
carbenicillincarbenicillin : 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-adenosylhomocysteineS-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'-methylthioadenosine5'-methylthioadenosine: structure

5'-S-methyl-5'-thioadenosine : Adenosine with the hydroxy group at C-5' substituted with a methylthio (methylsulfanyl) group.
thioadenosinealgal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite
egonolegonol : 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
orlistatorlistat : 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
luteolin3'-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
gentiseingentisein : 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
mangostinalpha-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
norathyriolnorathyriol : 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
cerulenincerulenin : 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-mangostingamma-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-Mangostinxanthones
9-Hydroxycalabaxanthonexanthones
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 egarcinone E: has potent cytotoxic effect against hepatocellular carcinoma cell lines; structure in first sourcexanthones
omdm 169OMDM 169: has antinociceptive activity; structure in first source
tetracyclinetetracycline : 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.
gsk837149aGSK837149A: structure in first source
gsk2194069GSK2194069: a beta-ketoacyl reductase inhibitor; structure in first source
thiolactomycinthiolactomycin: from actinomycetes; structure given in first source