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Antifolates act primarily as inhibitors of both RNA and DNA, and are often grouped with nucleic acid inhibitors in textbooks. However, they also act indirectly as protein synthesis inhibitors (because tetrahydrofolate is also involved in the synthesis of amino acids serine and methionine), so they are sometimes considered as their own category, antimetabolites. [6]
A protein synthesis inhibitor is a compound that stops or slows the growth or proliferation of cells by disrupting the processes that lead directly to the generation of new proteins. [ 1 ] A ribosome is a biological machine that utilizes protein dynamics on nanoscales to translate RNA into proteins
Purine synthesis inhibitor. Acute lymphoblastic leukaemia, acute promyelocytic leukaemia, lymphoblastic lymphoma and inflammatory bowel disease. [12] Myelosuppression, hepatotoxicity, GI ulceration (rare), pancreatitis (rare) and secondary leukaemia (rare) or myelodysplasia (rare). Nelarabine [13] IV: Purine synthesis inhibitor.
Protein synthesis inhibitor antibiotics (6 C, 7 P) R. Ribosome-inactivating proteins (13 P) Pages in category "Protein synthesis inhibitors" The following 9 pages are ...
There are three known classes of NS5B inhibitors: non-nucleoside analogue inhibitors, nucleoside/nucleotide analogue inhibitors, and pyrophosphate analogues. [2] The classes differ in their structure and where they bind to the NS5B protein: at allosteric binding sites, the enzyme active site, or the pyrophosphate binding site, respectively. [13]
The antiviral drug aciclovir (bottom), a nucleoside analogue that functions by mimicking guanosine (top) Nucleoside analogues are structural analogues of a nucleoside, which normally contain a nucleobase and a sugar. Nucleotide analogues are analogues of a nucleotide, which normally has one to three phosphates linked to a nucleoside.
Thymidine synthesis first requires reduction of the uridine to deoxyuridine (see next section), before the base can be methylated to produce thymidine. [1] [5] ATP, a purine nucleotide, is an activator of pyrimidine synthesis, while CTP, a pyrimidine nucleotide, is an inhibitor of pyrimidine synthesis. This regulation helps to keep the purine ...
Mycophenolate mofetil is an immunosuppressant drug used to prevent rejection in organ transplantation; it inhibits purine synthesis by blocking inosine monophosphate dehydrogenase (IMPDH). [5] Methotrexate also indirectly inhibits purine synthesis by blocking the metabolism of folic acid (it is an inhibitor of the dihydrofolate reductase).
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