Target type: biologicalprocess
The chemical reactions and pathways involving phosphatidylglycerols, any of a class of phospholipids in which the phosphatidyl group is esterified to the hydroxyl group of glycerol. They are important constituents of cell membranes. [ISBN:0198506732]
Phosphatidylglycerol (PG) metabolic process is a fundamental pathway in cellular lipid metabolism, crucial for membrane structure and function, particularly in bacteria. It involves a series of enzymatic steps that synthesize PG from precursor molecules and ultimately lead to its incorporation into membranes.
The process begins with the conversion of CDP-diacylglycerol (CDP-DAG) to phosphatidylglycerophosphate (PGP) by the enzyme phosphatidylglycerophosphate synthase. This reaction involves the transfer of a phosphate group from CDP-DAG to glycerol-3-phosphate.
PGP is then dephosphorylated by phosphatidylglycerophosphate phosphatase, yielding PG. This reaction removes the phosphate group from PGP, generating the final product, PG.
In bacteria, PG plays a significant role in membrane stability, particularly in the context of high osmotic stress. It contributes to the negative charge of the inner membrane, which is essential for maintaining the proton gradient required for ATP synthesis. Additionally, PG acts as a precursor for other important lipids, such as cardiolipin, which is essential for respiratory chain function.
The synthesis of PG is tightly regulated, ensuring that its levels are appropriate for cellular needs. This regulation is achieved through a complex interplay of factors, including the availability of precursor molecules, the activity of enzymes involved in the pathway, and the demand for PG in membrane biogenesis.
In summary, phosphatidylglycerol metabolic process is a vital pathway for the synthesis and maintenance of bacterial cell membranes, contributing to their structural integrity, osmotic balance, and energy production.'
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Protein | Definition | Taxonomy |
---|---|---|
Group IID secretory phospholipase A2 | A group IID secretory phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9UNK4] | Homo sapiens (human) |
Group IIE secretory phospholipase A2 | A group IIE secretory phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NZK7] | Homo sapiens (human) |
Group 3 secretory phospholipase A2 | A group 3 secretory phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NZ20] | Homo sapiens (human) |
Phospholipase A2 | A phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P04054] | Homo sapiens (human) |
Group 10 secretory phospholipase A2 | A group 10 secretory phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15496] | Homo sapiens (human) |
Compound | Definition | Classes | Roles |
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4-bromophenacyl bromide | 4-bromophenacyl bromide: phospholipidase A(2) inhibitor; structure | ||
oleanolic acid | hydroxy monocarboxylic acid; pentacyclic triterpenoid | plant metabolite | |
3-octylthio-1,1,1-trifluoro-2-propanone | 3-octylthio-1,1,1-trifluoro-2-propanone: a pesticide synergist; inhibits juvenile hormone esterase | ||
varespladib | aromatic ether; benzenes; dicarboxylic acid monoamide; indoles; monocarboxylic acid; primary carboxamide | anti-inflammatory drug; antidote; EC 3.1.1.4 (phospholipase A2) inhibitor | |
cholic acid | cholic acid : A bile acid that is 5beta-cholan-24-oic acid bearing three alpha-hydroxy substituents at position 3, 7 and 12. Cholic Acid: A major primary bile acid produced in the liver and usually conjugated with glycine or taurine. It facilitates fat absorption and cholesterol excretion. | 12alpha-hydroxy steroid; 3alpha-hydroxy steroid; 7alpha-hydroxy steroid; bile acid; C24-steroid; trihydroxy-5beta-cholanic acid | human metabolite; mouse metabolite |
curcumin | curcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa. Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes. | aromatic ether; beta-diketone; diarylheptanoid; enone; polyphenol | anti-inflammatory agent; antifungal agent; antineoplastic agent; biological pigment; contraceptive drug; dye; EC 1.1.1.205 (IMP dehydrogenase) inhibitor; EC 1.1.1.21 (aldehyde reductase) inhibitor; EC 1.1.1.25 (shikimate dehydrogenase) inhibitor; EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor; EC 1.8.1.9 (thioredoxin reductase) inhibitor; EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; flavouring agent; food colouring; geroprotector; hepatoprotective agent; immunomodulator; iron chelator; ligand; lipoxygenase inhibitor; metabolite; neuroprotective agent; nutraceutical; radical scavenger |
quercetin | 7-hydroxyflavonol; pentahydroxyflavone | antibacterial agent; antineoplastic agent; antioxidant; Aurora kinase inhibitor; chelator; EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor; geroprotector; phytoestrogen; plant metabolite; protein kinase inhibitor; radical scavenger | |
amentoflavone | biflavonoid; hydroxyflavone; ring assembly | angiogenesis inhibitor; antiviral agent; cathepsin B inhibitor; P450 inhibitor; plant metabolite | |
4-amylcinnamoylanthranilic acid | 4-amylcinnamoylanthranilic acid: phospholipase A2 inhibitor N-(p-amylcinnamoyl)anthranilic acid : An amidobenzoic acid that is anthranilic acid in which one of the anilino hydrogens is replaced by a 4-pentylcinnamoyl group. It is a transient receptor potential (TRP) channel blocker and phospholipase A2 (PLA2) inhibitor. | amidobenzoic acid; cinnamamides; secondary carboxamide | EC 3.1.1.4 (phospholipase A2) inhibitor; TRP channel blocker |
3-(4-octadecyl)benzoylacrylic acid | |||
ochnaflavone | ochnaflavone : A biflavonoid with an ether linkage between the B-rings of the apigenin and luteolin subunits. It has been isolated from several members of the Ochnaceae plant family. ochnaflavone: from Lonicera japonica; structure given in first source | aromatic ether; biflavonoid; hydroxyflavone | anti-inflammatory agent; antiatherogenic agent; antibacterial agent; EC 3.1.1.4 (phospholipase A2) inhibitor; leukotriene antagonist; plant metabolite |
manoalide | manoalide : A sesterterpenoid isolated from the marine sponge Luffariella variabilis and which has been shown to exhibit inhibitory activity towards phospholipase A2. manoalide: phospholipase A2 inhibitor; sesterterpene from marine sponge L. variabilis; structure given in first source | butenolide; lactol; sesterterpenoid | EC 3.1.1.4 (phospholipase A2) inhibitor; EC 5.99.1.2 (DNA topoisomerase) inhibitor; EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor; metabolite |
manoalogue | manoalogue: synthetic analog of manoalide; phospholipase A2 antagonist; structure given in first source | ||
ursodoxicoltaurine | tauroursodeoxycholate : An organosulfonate oxoanion that is the conjugate base of tauroursodeoxycholic acid arising from deprotonation of the sulfonate OH group; major species at pH 7.3. tauroursodeoxycholic acid : A bile acid taurine conjugate derived from ursoodeoxycholic acid. | bile acid taurine conjugate | anti-inflammatory agent; apoptosis inhibitor; bone density conservation agent; cardioprotective agent; human metabolite; neuroprotective agent |
ym 26734 | YM 26734: inhibits group II phospholipase A2; structure given in first source | ||
indoxam | indoxam: structure in first source |