DNA chain made of mechanical futuristic parts.
In [86] the addition of a deoxyribonucleoside monophosphate (dNMP) moiety onto a growing DNA chain (5′-DNA-polymer-3′-ΟΗ) is shown; the other product is inorganic pyrophosphate.
Hydroxyurea does not directly damage DNA, but it arrests DNA chain elongation synthesis [34], which then leads to genomic instability.
When incorporated into DNA, gemcitabine triphosphate (dFdCTP) terminates DNA chain elongation (Huang et al, 1991; Plunkett et al, 1995).
After taken up by cells, dFdC is phosphorylated to its active metabolites, which inhibits DNA chain elongation, leading to DNA fragmentation and cell death [ 8, 10, 21].
Drugs currently licensed in the US to treat CMV target the viral DNA polymerase and block elongation of the viral DNA chain.
Made in a similar way to computer chips but incorporating DNA, the chip can be programmed to scan a DNA chain for specific sequences of letters.
Therefore, the DNA chain was cut to form 180 to 200 bp DNA fragments.
The acyclovir triphosphate then interferes with viral DNA polymerization through competitive inhibition with guanosine triphosphate and obligatory DNA chain termination [ 3].
This mechanism, which can be used in the case of circular DNA molecules or linear DNAs that circularize or form concatemers, cannot be used at the ends of linear DNAs since the RNA primer is removed from the DNA chain, and there is no way of filling the gap resulting at the 5' -ends of the newly synthesized DNA chain.
In these, both strands of DNA that make up the double helix are broken and the DNA chain is severed.
