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Deoxycytidine is a deoxyribonucleoside, a component of deoxyribonucleic acid. It is similar to the ribonucleoside cytidine , but with one hydroxyl group removed from the C2' position. Deoxycytidine can be phosphorylated at C5' of the deoxyribose by deoxycytidine kinase , converting it to deoxycytidine monophosphate (dCMP), a DNA precursor.
Zalcitabine (2′-3′-dideoxycytidine, ddC), also called dideoxycytidine, is a nucleoside analog reverse-transcriptase inhibitor (NRTI) sold under the trade name Hivid. Zalcitabine was the third antiretroviral to be approved by the Food and Drug Administration (FDA) for the treatment of HIV/AIDS. It is used as part of a combination regimen.
[1] [2] [3] Introduced by Gilbert N. Lewis in his 1916 article The Atom and the Molecule, a Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. [ 4 ] Lewis structures extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond.
In enzymology, a deoxycytidine deaminase (EC 3.5.4.5) is an enzyme that catalyzes the chemical reaction deoxycytidine + H 2 O ⇌ {\displaystyle \rightleftharpoons } deoxyuridine + NH 3 Thus, the two substrates of this enzyme are deoxycytidine and H 2 O , whereas its two products are deoxyuridine and NH 3 .
A polar molecule has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from polar bonds arranged asymmetrically. Water (H 2 O) is an example of a polar molecule since it has a slight positive charge on one side and a slight negative charge on the other. The dipoles do not cancel out ...
Nucleosides are glycosylamines that can be thought of as nucleotides without a phosphate group.A nucleoside consists simply of a nucleobase (also termed a nitrogenous base) and a five-carbon sugar (ribose or 2'-deoxyribose) whereas a nucleotide is composed of a nucleobase, a five-carbon sugar, and one or more phosphate groups.
Image credits: Ross Burgener Meanwhile, for Dr. Brandon, the most beautiful natural phenomenon is the northern lights, whereas the most fascinating is the diel vertical migration.
Decitabine (i.e., 5-aza-2′-deoxycytidine), sold under the brand name Dacogen among others, acts as a nucleic acid synthesis inhibitor. [4] It is a medication for the treatment of myelodysplastic syndromes , a class of conditions where certain blood cells are dysfunctional, and for acute myeloid leukemia (AML). [ 5 ]