Acyclovir gets phosphorylated by the thymidine kinase of herpes. During this process, a base and sugar gets added to the drug. Acyclovir's OH group becomes a monophosphate so a triphosphate can be formed. It can enter the cell and affect it's DNA sequence by terminating its chain.
Acyclovir can help treat herpes. The herpes's simplex virus thymidine kinase can phosphorylate the drug into its monophosphate. As it is a poor substrate for the thymidine kinase of humans, it is not toxic for non-infected cells. This drug competes with dGTP as a competitive inhibitor. Once is enters the DNA, it can act as a chain terminator.
The terminator in mRNA synthesis is a specific DNA sequence that signals the end of transcription. When the RNA polymerase reaches the terminator sequence, it stops transcribing the mRNA molecule, releasing it from the DNA template.
A DNA terminator sequence is a specific nucleotide sequence that signals the end of transcription for RNA polymerase, thus stopping the synthesis of RNA from DNA. It usually contains a stem-loop structure that causes RNA polymerase to dissociate from the DNA template.
Transcription is the process that stops when RNA polymerase is terminated.
Translation terminates when a stop codon (UAA, UAG, or UGA) is reached in the mRNA. This stop codon is recognized by release factors, which promote the release of the completed polypeptide chain from the ribosome.
Polymerase chain reaction
florie and chain
A mutation
DNA polymerase is the enzyme responsible for ensuring that the correct base is aligned with the template chain during DNA replication. It has a proofreading function that helps in accurately replicating the DNA sequence.
DNA
A DNA molecule is composed of long chains of DNA nucleotides.
PCR