Target type: biologicalprocess
The chemical reactions and pathways resulting in the breakdown of organophosphates, any phosphate-containing organic compound. [GOC:ai]
Organophosphate catabolic process is a crucial enzymatic breakdown of organophosphate compounds, which are synthetic chemicals containing phosphorus bonded to oxygen atoms. These compounds are widely used as pesticides, insecticides, herbicides, and nerve agents, and their accumulation in the environment and organisms poses significant health risks. The process involves a series of enzymatic reactions catalyzed by various hydrolases, primarily organophosphate hydrolases (OPHs) and carboxylesterases.
1. **Hydrolysis of the Phosphate Ester Bond:** The initial step in organophosphate catabolism is the hydrolysis of the phosphate ester bond. This reaction is catalyzed by OPHs, a diverse group of enzymes with varying substrate specificities. OPHs cleave the phosphate ester bond, releasing the organophosphate group from the molecule.
2. **Detoxification of the Organophosphate:** The hydrolysis reaction generates a less toxic compound and an inorganic phosphate ion (Pi). The inorganic phosphate ion is readily utilized in various cellular processes. The organophosphate product is further metabolized by other enzymatic pathways, leading to detoxification and elimination from the body.
3. **Specific Examples:** Different organophosphates are degraded by specific enzymes. For example, paraoxonase (PON1), a serum enzyme, hydrolyzes paraoxon, a potent insecticide.
4. **Significance:** Organophosphate catabolic processes are essential for protecting organisms from the harmful effects of these chemicals. They play a critical role in environmental remediation, reducing the accumulation of organophosphates in the environment.
5. **Challenges:** Some organophosphates, like nerve agents, are highly toxic and resistant to enzymatic breakdown. The development of new and more efficient OPHs is a critical research area to address the threat posed by these chemicals.'
"
| Protein | Definition | Taxonomy |
|---|---|---|
| Serum paraoxonase/arylesterase 1 | A serum paraoxonase/arylesterase 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P27169] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| 4-nitrophenylphosphate | 4-nitrophenyl phosphate : An aryl phosphate resulting from the mono-esterification of phosphoric acid with 4-nitrophenol. nitrophenylphosphate: RN given refers to mono(4-nitrophenyl) ester of phosphoric acid | aryl phosphate | mouse metabolite |
| acetazolamide | Acetazolamide: One of the CARBONIC ANHYDRASE INHIBITORS that is sometimes effective against absence seizures. It is sometimes useful also as an adjunct in the treatment of tonic-clonic, myoclonic, and atonic seizures, particularly in women whose seizures occur or are exacerbated at specific times in the menstrual cycle. However, its usefulness is transient often because of rapid development of tolerance. Its antiepileptic effect may be due to its inhibitory effect on brain carbonic anhydrase, which leads to an increased transneuronal chloride gradient, increased chloride current, and increased inhibition. (From Smith and Reynard, Textbook of Pharmacology, 1991, p337) | monocarboxylic acid amide; sulfonamide; thiadiazoles | anticonvulsant; diuretic; EC 4.2.1.1 (carbonic anhydrase) inhibitor |
| diclofenac sodium | diclofenac(1-) : The conjugate base of diclofenac. | monocarboxylic acid anion | |
| furosemide | furosemide : A chlorobenzoic acid that is 4-chlorobenzoic acid substituted by a (furan-2-ylmethyl)amino and a sulfamoyl group at position 2 and 5 respectively. It is a diuretic used in the treatment of congestive heart failure. Furosemide: A benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for EDEMA and chronic RENAL INSUFFICIENCY. | chlorobenzoic acid; furans; sulfonamide | environmental contaminant; loop diuretic; xenobiotic |
| ifosfamide | ifosfamides | alkylating agent; antineoplastic agent; environmental contaminant; immunosuppressive agent; xenobiotic | |
| indomethacin | indometacin : A member of the class of indole-3-acetic acids that is indole-3-acetic acid in which the indole ring is substituted at positions 1, 2 and 5 by p-chlorobenzoyl, methyl, and methoxy groups, respectively. A non-steroidal anti-inflammatory drug, it is used in the treatment of musculoskeletal and joint disorders including osteoarthritis, rheumatoid arthritis, gout, bursitis and tendinitis. Indomethacin: A non-steroidal anti-inflammatory agent (NSAID) that inhibits CYCLOOXYGENASE, which is necessary for the formation of PROSTAGLANDINS and other AUTACOIDS. It also inhibits the motility of POLYMORPHONUCLEAR LEUKOCYTES. | aromatic ether; indole-3-acetic acids; monochlorobenzenes; N-acylindole | analgesic; drug metabolite; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; environmental contaminant; gout suppressant; non-steroidal anti-inflammatory drug; xenobiotic; xenobiotic metabolite |
| ketoprofen | ketoprofen : An oxo monocarboxylic acid that consists of propionic acid substituted by a 3-benzoylphenyl group at position 2. Ketoprofen: An IBUPROFEN-type anti-inflammatory analgesic and antipyretic. It is used in the treatment of rheumatoid arthritis and osteoarthritis. | benzophenones; oxo monocarboxylic acid | antipyretic; drug allergen; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; environmental contaminant; non-steroidal anti-inflammatory drug; xenobiotic |
| mafenide | Mafenide: A sulfonamide that inhibits the enzyme CARBONIC ANHYDRASE and is used as a topical anti-bacterial agent, especially in burn therapy. | aromatic amine | |
| sulfacetamide | sulfacetamide : A sulfonamide that is sulfanilamide acylated on the sulfonamide nitrogen. Sulfacetamide: An anti-bacterial agent that is used topically to treat skin infections and orally for urinary tract infections. | N-sulfonylcarboxamide; substituted aniline | antibacterial drug; antiinfective agent; antimicrobial agent; EC 2.5.1.15 (dihydropteroate synthase) inhibitor |
| phenylphosphate | phenyl phosphate : An aryl phosphate resulting from the mono-esterification of phosphoric acid with phenol. phenylphosphate: structure given in first source | aryl phosphate | mouse metabolite |
| paclitaxel | Taxus: Genus of coniferous yew trees or shrubs, several species of which have medicinal uses. Notable is the Pacific yew, Taxus brevifolia, which is used to make the anti-neoplastic drug taxol (PACLITAXEL). | taxane diterpenoid; tetracyclic diterpenoid | antineoplastic agent; human metabolite; metabolite; microtubule-stabilising agent |
| etoposide | beta-D-glucoside; furonaphthodioxole; organic heterotetracyclic compound | antineoplastic agent; DNA synthesis inhibitor | |
| 5-amino-1,3,4-thiadiazole-2-sulfonamide | 5-amino-1,3,4-thiadiazole-2-sulfonamide: structure in first source | ||
| docetaxel anhydrous | docetaxel anhydrous : A tetracyclic diterpenoid that is paclitaxel with the N-benzyloxycarbonyl group replaced by N-tert-butoxycarbonyl, and the acetoxy group at position 10 replaced by a hydroxy group. Docetaxel: A semisynthetic analog of PACLITAXEL used in the treatment of locally advanced or metastatic BREAST NEOPLASMS and NON-SMALL CELL LUNG CANCER. | secondary alpha-hydroxy ketone; tetracyclic diterpenoid | antimalarial; antineoplastic agent; photosensitizing agent |
| clindamycin phosphate | |||
| lincomycin | lincomycin : A carbohydrate-containing antibiotic produced by the actinomyces Streptomyces lincolnensis. Lincomycin: An antibiotic produced by Streptomyces lincolnensis var. lincolnensis. It has been used in the treatment of staphylococcal, streptococcal, and Bacteroides fragilis infections. | carbohydrate-containing antibiotic; L-proline derivative; monocarboxylic acid amide; pyrrolidinecarboxamide; S-glycosyl compound | antimicrobial agent; bacterial metabolite |
| t-tucb | |||
| oxytetracycline, anhydrous | oxytetracycline : A tetracycline used for treatment of infections caused by a variety of Gram positive and Gram negative microorganisms including Mycoplasma pneumoniae, Pasteurella pestis, Escherichia coli, Haemophilus influenzae (respiratory infections), and Diplococcus pneumoniae. Oxytetracycline: A TETRACYCLINE analog isolated from the actinomycete STREPTOMYCES RIMOSUS and used in a wide variety of clinical conditions. | ||
| mobiflex | tenoxicam : A thienothiazine-derived monocarboxylic acid amide obtained by formal condensation of the carboxy group of 4-hydroxy-2-methylthieno[2,3-e][1,2]thiazine-3-carboxylic acid 1,1-dioxide with the amino group of 2-aminopyridine. Used for the treatment of pain and inflammation in osteoarthritis and rheumatoid arthritis. It is also indicated for short term treatment of acute musculoskeletal disorders including strains, sprains and other soft-tissue injuries. | heteroaryl hydroxy compound; monocarboxylic acid amide; pyridines; thienothiazine | antipyretic; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; non-narcotic analgesic; non-steroidal anti-inflammatory drug |
| lornoxicam | lornoxicam : A thienothiazine-derived monocarboxylic acid amide obtained by formal condensation of the carboxy group of 6-chloro-4-hydroxy-2-methylthieno[2,3-e][1,2]thiazine-3-carboxylic acid 1,1-dioxide with the amino group of 2-aminopyridine. Used for the treatment of pain, primarily resulting from inflammatory diseases of the joints, osteoarthritis, surgery, sciatica and other inflammations. | heteroaryl hydroxy compound; monocarboxylic acid amide; organochlorine compound; pyridines; thienothiazine | antipyretic; non-narcotic analgesic; non-steroidal anti-inflammatory drug |