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Methionine synthase mammalian protein found in Homo sapiens

Methionine synthase also known as MS, MeSe, MetH is responsible for the regeneration of methionine from homocysteine. In humans it is encoded by the MTR gene. Methionine synthase forms part of the S-adenosylmethionine (SAMe) biosynthesis and regeneration cycle. In animals this enzyme requires Vitamin B12 (cobalamin) as a cofactor, whereas the form found in plants is cobalamin-independent. Microorganisms express both cobalamin-dependent and cobalamin-independent forms.

Raltitrexed chemical compound

{{Drugbox | verifiedrevid = 464379925 | IUPAC_name = N-[(5-{methyl[ methyl]amino}-2-thienyl)carbonyl]-L-glutamic acid | image = Raltitrexed.svg | image2 = Raltitrexed ball-and-stick.png | tradename = | Drugs.com = Micromedex Detailed Consumer Information | pregnancy_AU = | pregnancy_US = | pregnancy_category = | legal_AU = | legal_UK = POM | legal_US = Not available | legal_status = | routes_of_administration = Intravenous | bioavailability = | protein_bound = | metabolism = | elimination_half-life = | excretion = | IUPHAR_ligand = 7403 | CAS_number_Ref =   | CAS_number = 112887-68-0 | ATC_prefix = L01 | ATC_suffix = BA03 | ATC_supplemental = | PubChem = 104758 | DrugBank_Ref =   | DrugBank = DB00293 | ChemSpiderID_Ref =   | ChemSpiderID = 94568 | UNII_Ref =   | UNII = FCB9EGG971 | KEGG_Ref =   | KEGG = D01064 | ChEMBL_Ref =   | ChEMBL = 225071 | PDB_ligand = D16 | C=21 | H=22 | N=4 | O=6 | S=1 | molecular_weight = 458.489 g/mol | smiles = O=C(c3sc cc3)N[C@H](C O)CCC(=O)O | StdInChI_Ref =   | StdInChI = 1S/C21H22N4O6S/c1-11-22-14-4-3-12(9-13 19 23-11)10-25(2)17-7-6-16(32-17)20(29)24-15(21 31)5-8-18(26)27/h3-4,6-7,9,15H,5,8,10H2,1-2H3,(H,24,29)(H,26,27)(H,30,31)(H,22,23,28)/t15-/m0/s1 | StdInChIKey_Ref =   | StdInChIKey = IVTVGDXNLFLDRM-HNNXBMFYSA-N }}

Thymidylate synthase mammalian protein found in Homo sapiens

Thymidylate synthase (TS) is an enzyme that catalyzes the conversion of deoxyuridine monophosphate (dUMP) to deoxythymidine monophosphate (dTMP). Thymidine is one of the nucleotides in DNA. With inhibition of TS, an imbalance of deoxynucleotides and increased levels of dUMP arise. Both cause DNA damage.

5,10-Methylenetetrahydrofolate chemical compound

5,10-Methylenetetrahydrofolate (N5,N10-Methylenetetrahydrofolate; 5,10-CH2-THF) is cofactor in several biochemical reactions. It exists in nature as the diastereoisomer [6R]-5,10-methylene-THF.

Inosine monophosphate synthase mammalian protein found in Homo sapiens

Bifunctional purine biosynthesis protein PURH is a protein that in humans is encoded by the ATIC gene.

Thymidylate synthase (FAD) class of enzymes

In enzymology, a thymidylate synthase (FAD) (EC 2.1.1.148) is an enzyme that catalyzes the chemical reaction

Nitric oxide synthase 2 (inducible) protein-coding gene in the species Homo sapiens

Nitric oxide synthase, inducible is an enzyme that in humans is encoded by the NOS2 gene.

Aminodeoxychorismate synthase class of enzymes

In enzymology, an aminodeoxychorismate synthase is an enzyme that catalyzes the chemical reaction

Pyrimidine analogues are nucleoside analog antimetabolites which mimic the structure of metabolic pyrimidines.

Substrate channeling is the passing of the intermediary metabolic product of one enzyme directly to another enzyme or active site without its release into solution. When several consecutive enzymes of a metabolic pathway channel substrates between themselves, this is called a metabolon. Channeling can make a metabolic pathway more rapid and efficient than it would be if the enzymes were randomly distributed in the cytosol, or prevent the release of unstable intermediates. It can also protect an intermediate from being consumed by competing reactions catalyzed by other enzymes.

Thymidylate synthase inhibitors are chemical agents which inhibit the enzyme thymidylate synthase and have potential as an anticancer chemotherapy. This inhibition prevents the methylation of C5 of deoxyuridine monophosphate (dUMP) thereby inhibiting the synthesis of deoxythymidine monophosphate (dTMP). The downstream effect is promotion of cell death because cells would not be able to properly undergo DNA synthesis if they are lacking dTMP, a necessary precursor to dTTP . Five agents were in clinical trials in 2002: raltitrexed, pemetrexed, nolatrexed, ZD9331, and GS7904L.

Nolatrexed chemical compound

Nolatrexed is a thymidylate synthase inhibitor.

OSI-7904 chemical compound

OSI-7904 is a noncompetitive liposomal thymidylate synthase inhibitor. OSI-7904 is a benzoquinazoline folate analog with antineoplastic activity. As a thymidylate synthase inhibitor, OSI-7904 noncompetitively binds to thymidylate synthase, resulting in inhibition of thymine nucleotide synthesis and DNA replication.

Thymectacin chemical compound

Thymectacin is an anticancer prodrug of brivudine monophosphate. It developed by New Biotics and it has entered in phase I clinical trials for colon cancer.

Thymidylate kinase catalyzes the phosphorylation of thymidine 5'-monophosphate (dTMP) to form thymidine 5'-diphosphate (dTDP) in the presence of ATP and magnesium:

ONX-0801 chemical compound

ONX-0801 is an experimental drug that has been developed to target ovarian cancer. It is a folate receptor alpha mediated thymidylate synthase inhibitor.

Macropodid alphaherpesvirus 1 (MaHV-1) is a species of virus in the genus Simplexvirus, subfamily Alphaherpesvirinae, family Herpesviridae, and order Herpesvirales. Macropods serve as natural hosts.

Fluorodeoxyuridylate chemical compound

Fluorodeoxyuridylate, also known as FdUMP, 5-Fluoro-2'-deoxyuridylate, or 5-Fluoro-2'-deoxyuridine 5'-monophosphate sodium salt, is a molecule formed in vivo from 5-fluorouracil or 5-fluorodeoxyuridin.