Target type: biologicalprocess
The chemical reactions and pathways resulting in the formation of folic acid, pteroylglutamic acid. [GOC:ai]
The biosynthesis of folic acid, also known as tetrahydrofolate (THF), is a crucial metabolic pathway that produces a coenzyme essential for numerous biological processes. This process begins with the formation of dihydrofolate (DHF) from dihydropteroate and p-aminobenzoic acid (PABA) by dihydropteroate synthase. This reaction is catalyzed by the enzyme dihydropteroate synthase, which is encoded by the DHPS gene. DHF is then reduced to THF by the enzyme dihydrofolate reductase (DHFR). This reaction, catalyzed by the DHFR enzyme, is a key target for many antibacterial and anticancer drugs, as it inhibits the production of THF, which is essential for bacterial and tumor cell growth.
Once THF is formed, it can be further modified to generate various coenzymes with different functions. These coenzymes are crucial for various metabolic processes, including the synthesis of purines and pyrimidines, essential components of DNA and RNA, as well as the synthesis of amino acids, such as methionine and glycine. Additionally, THF coenzymes are involved in the conversion of serine to glycine and the catabolism of histidine.
In summary, the biosynthesis of folic acid is a critical pathway that produces a vital coenzyme, THF, which is involved in numerous fundamental metabolic processes. This pathway is essential for the growth and survival of all organisms, making it a crucial target for therapeutic intervention in various diseases.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase | A 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P26281] | Escherichia coli K-12 |
| Dihydropteroate synthase | A dihydropteroate synthase that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P0AC13] | Escherichia coli K-12 |
| Dihydropteroate synthase | A dihydropteroate synthase that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P0AC13] | Escherichia coli K-12 |
| Dihydrofolate reductase | A dihydrofolate reductase folA that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P0ABQ4] | Escherichia coli K-12 |
| Dihydrofolate synthase/folylpolyglutamate synthase | A dihydrofolate synthase/folylpolyglutamate synthase that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P08192] | Escherichia coli K-12 |
| Dihydrofolate synthase/folylpolyglutamate synthase | A dihydrofolate synthase/folylpolyglutamate synthase that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P08192] | Escherichia coli K-12 |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| lamotrigine | 1,2,4-triazines; dichlorobenzene; primary arylamine | anticonvulsant; antidepressant; antimanic drug; calcium channel blocker; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor; environmental contaminant; excitatory amino acid antagonist; geroprotector; non-narcotic analgesic; xenobiotic | |
| methazolamide | Methazolamide: A carbonic anhydrase inhibitor that is used as a diuretic and in the treatment of glaucoma. | sulfonamide; thiadiazoles | |
| pyrimethamine | Maloprim: contains above 2 cpds | aminopyrimidine; monochlorobenzenes | antimalarial; antiprotozoal drug; EC 1.5.1.3 (dihydrofolate reductase) inhibitor |
| imatinib | aromatic amine; benzamides; N-methylpiperazine; pyridines; pyrimidines | antineoplastic agent; apoptosis inducer; tyrosine kinase inhibitor | |
| sulfamethoxazole | sulfamethoxazole : An isoxazole (1,2-oxazole) compound having a methyl substituent at the 5-position and a 4-aminobenzenesulfonamido group at the 3-position. Sulfamethoxazole: A bacteriostatic antibacterial agent that interferes with folic acid synthesis in susceptible bacteria. Its broad spectrum of activity has been limited by the development of resistance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p208) | isoxazoles; substituted aniline; sulfonamide; sulfonamide antibiotic | antibacterial agent; antiinfective agent; antimicrobial agent; drug allergen; EC 1.1.1.153 [sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming)] inhibitor; EC 2.5.1.15 (dihydropteroate synthase) inhibitor; environmental contaminant; epitope; P450 inhibitor; xenobiotic |
| sulfathiazole | sulfathiazole : A 1,3-thiazole compound having a 4-aminobenzenesulfonamido group at the 2-position. Sulfathiazole: A sulfathiazole compound that is used as a short-acting anti-infective agent. It is no longer commonly used systemically due to its toxicity, but may still be applied topically in combination with other drugs for the treatment of vaginal and skin infections, and is still used in veterinary medicine. | 1,3-thiazoles; substituted aniline; sulfonamide; sulfonamide antibiotic | antiinfective agent; drug allergen; EC 2.5.1.15 (dihydropteroate synthase) inhibitor; environmental contaminant; xenobiotic |
| trimethoprim | trimethoprim : An aminopyrimidine antibiotic whose structure consists of pyrimidine 2,4-diamine and 1,2,3-trimethoxybenzene moieties linked by a methylene bridge. Trimethoprim: A pyrimidine inhibitor of dihydrofolate reductase, it is an antibacterial related to PYRIMETHAMINE. It is potentiated by SULFONAMIDES and the TRIMETHOPRIM, SULFAMETHOXAZOLE DRUG COMBINATION is the form most often used. It is sometimes used alone as an antimalarial. TRIMETHOPRIM RESISTANCE has been reported. | aminopyrimidine; methoxybenzenes | antibacterial drug; diuretic; drug allergen; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; environmental contaminant; xenobiotic |
| trimetrexate | Trimetrexate: A nonclassical folic acid inhibitor through its inhibition of the enzyme dihydrofolate reductase. It is being tested for efficacy as an antineoplastic agent and as an antiparasitic agent against PNEUMOCYSTIS PNEUMONIA in AIDS patients. Myelosuppression is its dose-limiting toxic effect. | ||
| cycloguanil | cycloguanil : A triazine in which a 1,6-dihydro-1,3,5-triazine ring is substituted at N-1 by a 4-chlorophenyl group, at C-2 and -4 by amino groups and at C-6 by gem-dimethyl groups. A dihydrofolate reductase inhibitor, it is a metabolite of the antimalarial drug proguanil. cycloguanil: the active metabolite of proguanil; antifolate drug; structure in first source | triazines | antifolate; antiinfective agent; antimalarial; antiparasitic agent; antiprotozoal drug; EC 1.5.1.3 (dihydrofolate reductase) inhibitor |
| 4,6-diamino-2,2-dimethyl-1,2-dihydro-1-phenyl-s-triazine | 4,6-diamino-2,2-dimethyl-1,2-dihydro-1-phenyl-s-triazine: structure in first source | ||
| diaveridine | diaveridine : An aminopyrimidine in which the pyrimidine ring carries amino substituents at C-2 and C-4 and a 3,4-dimethoxybenzyl group at C-5. A folic acid antagonist, it is used as a synergist with sulfonamides against the parasitic Eimeria species. diaveridine: RN given refers to parent cpd; structure | aminopyrimidine | antiparasitic agent; drug allergen |
| piritrexim | piritrexim: RN given refers to parent cpd; structure given in first source | ||
| 2,4-diaminoquinazoline | |||
| tetroxoprim | tetroxoprim: structure given in Negwer 5th ed, #6419 | dimethoxybenzene | |
| isocytosine | 2-amino-4-hydroxypyrimidine : An aminopyrimidine in which the pyrimidine ring bears amino and hydroxy substituents at positions 2 and 4, respectively. | aminopyrimidine; pyrimidine nucleobase; pyrimidone | |
| brodimoprim | brodimoprim : An aminopyrimidine that is 2,4-diaminopyrimidine in which the hydrogen at position 5 has been replaced by a 4-bromo-3,5-dimethoxybenzyl group. brodimoprim: inhibits dihydrofolate reductase | aminopyrimidine; bromobenzenes; methoxybenzenes | antibacterial drug; antiinfective agent; EC 1.5.1.3 (dihydrofolate reductase) inhibitor |
| epiroprim | epiroprim: an analog of trimethoprim with improved antimicrobial and pharmacokinetic properties; structure given in first source | ||
| methylbenzoprim | methylbenzoprim: structure given in first source | ||
| isoguanine | isoguanine : An oxopurine that is 3,7-dihydro-purin-2-one in which the hydrogen at position 6 is substituted by an amino group. isoguanine: structure | oxopurine | |
| 2,4-diamino-5-benzylpyrimidine | 2,4-diamino-5-benzylpyrimidine: structure given in first source | ||
| 2,4-diamino-5,6-dihydro-6,6-dimethyl-5-(4'-methoxyphenyl)-s-triazine | 2,4-diamino-5,6-dihydro-6,6-dimethyl-5-(4'-methoxyphenyl)-s-triazine: RN given refers to parent cpd; structure given in first source | ||
| methotrexate | dicarboxylic acid; monocarboxylic acid amide; pteridines | abortifacient; antimetabolite; antineoplastic agent; antirheumatic drug; dermatologic drug; DNA synthesis inhibitor; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; immunosuppressive agent | |
| aminopterin | Aminopterin: A folic acid derivative used as a rodenticide that has been shown to be teratogenic. | dicarboxylic acid | EC 1.5.1.3 (dihydrofolate reductase) inhibitor; mutagen |
| iclaprim | 5-[(2-cyclopropyl-7,8-dimethoxy-2H-chromen-5-yl)methyl]pyrimidine-2,4-diamine : An aminopyrimidine that is 5-methylpyrimidine-2,4-diamine in which one of the hydrogens of the methyl group has been replaced by a 2-cyclopropyl-7,8-dimethoxy-2H-chromen-5-yl group. iclaprim : A racemate consisting of equimolar amounts of (R)- and (S)-iclaprim. Both enantiomers exhibit similar, potent bactericidal activity against major Gram-positive pathogens, notably methicillin-sensitive and -resistant Staphylococcus aureus (MSSA and MRSA, respectively). iclaprim: has antiviral activity | aminopyrimidine; chromenes; cyclopropanes | |
| n-(3-chloro-7-indolyl)-1,4-benzenedisulphonamide | indisulam : A chloroindole that is 3-chloro-1H-indole substituted by a [(4-sulfamoylphenyl)sulfonyl]nitrilo group at position 7. It is a carbonic anhydrase inhibitor and a potential anti-cancer agent currently in clinical development. N-(3-chloro-7-indolyl)-1,4-benzenedisulphonamide: structure in first source | chloroindole; organochlorine compound; sulfonamide | antineoplastic agent; EC 4.2.1.1 (carbonic anhydrase) inhibitor |
| pd 173955 | PD 173955: inhibits src family-selective tyrosine kinase; structure in first source | aryl sulfide; dichlorobenzene; methyl sulfide; pyridopyrimidine | tyrosine kinase inhibitor |
| thioguanine anhydrous | Thioguanine: An antineoplastic compound which also has antimetabolite action. The drug is used in the therapy of acute leukemia. tioguanine : A 2-aminopurine that is the 6-thiono derivative of 2-amino-1,9-dihydro-6H-purine. Incorporates into DNA and inhibits synthesis. Used in the treatment of leukaemia. | 2-aminopurines | anticoronaviral agent; antimetabolite; antineoplastic agent |
| dihydrofolate | dihydrofolic acid : A folic acid derivative acted upon by dihydrofolate reductase to produce tetrahydrofolic acid. It interacts with bacteria during cell division and is targeted by various drugs to prevent nucleic acid synthesis. | dihydrofolic acids | Escherichia coli metabolite; mouse metabolite |
| guanine | 2-aminopurines; oxopurine; purine nucleobase | algal metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite | |
| folic acid | folcysteine: used to promote fertility in chickens vitamin B9 : Any B-vitamin that exhibits biological activity against vitamin B9 deficiency. Vitamin B9 refers to the many forms of folic acid and its derivatives, including tetrahydrofolic acid (the active form), methyltetrahydrofolate (the primary form found in blood), methenyltetrahydrofolate, folinic acid amongst others. They are present in abundance in green leafy vegetables, citrus fruits, and animal products. Lack of vitamin B9 leads to anemia, a condition in which the body cannot produce sufficient number of red blood cells. Symptoms of vitamin B9 deficiency include fatigue, muscle weakness, and pale skin. | folic acids; N-acyl-amino acid | human metabolite; mouse metabolite; nutrient |
| raltitrexed | N-acyl-amino acid | ||
| n-(4(n-((2-amino-4-hydroxy-6-quinazolinyl)methyl)prop-2-ynylamino)benzoyl)-l-glutamic acid | |||
| 1843u89 | 1843U89: structure given in first source; a folate analog | ||
| pemetrexed | pemetrexed disodium : An organic sodium salt that is the disodium salt of N-{4-[2-(2-amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl}-L-glutamic acid. Inhibits thymidylate synthase (TS), 421 dihydrofolate reductase (DHFR), and glycinamide ribonucleotide formyltransferase (GARFT). | N-acyl-L-glutamic acid; pyrrolopyrimidine | antimetabolite; antineoplastic agent; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; EC 2.1.1.45 (thymidylate synthase) inhibitor; EC 2.1.2.2 (phosphoribosylglycinamide formyltransferase) inhibitor |
| 8-methylguanine | 8-methylguanine: structure given in first source | ||
| 2-amino-6-hydroxy-8-mercaptopurine | |||
| cb 3717 | N-acyl-L-glutamic acid | ||
| 5,6,7,8-tetrahydrofolic acid | tetrahydrofolate : A folate obtained by deprotonation of any tetrahydrofolic acid. tetrahydrofolic acid : A group of heterocyclic compounds based on the 5,6,7,8-tetrahydropteroic acid skeleton conjugated with one or more L-glutamic acid units. | tetrahydrofolic acid | Saccharomyces cerevisiae metabolite |