AZT is a pyrimidine nucleoside analogue with an azide replacing the hydroxyl group at the 3′ position on the sugar ring of thymidine. The role is to terminate duplication of virus RNA. Despite its successful clinical applications, AZT suffers from long term resistance and toxicity problems.
Is AZT electrophilic?
Such behavior indicates the capability of AZT to undergo electrophilic interactions through its terminal azido substituents, especially the middle N atom.
What is the mechanism of action of AZT?
Mechanism of action
AZT works by selectively inhibiting HIV’s reverse transcriptase, the enzyme that the virus uses to make a DNA copy of its RNA.
What type of inhibitor is AZT?
AZT is an analog of the thymidine deoxynucleoside and is a member of the class called the nucleoside-analog reverse transcriptase inhibitors. AZT and other members of this class function by inhibiting the HIV reverse transcriptase. This halts the life cycle of the virus and slows the progression of AIDS.
What is an azido group?
1. azido group – the univalent group N3- derived from hydrazoic acid. azido radical. chemical group, radical, group – (chemistry) two or more atoms bound together as a single unit and forming part of a molecule. Based on WordNet 3.0, Farlex clipart collection.
How is AZT zidovudine chemically synthesized?
Zidovudine is 3′-azido-3′-deoxytimidine (36.1. 26), is synthesized from 1-(2′-deoxy-5′-O-trityl-β-d-lyxosyl)thymine, which is treated with methansulfonyl chloride in pyridine to make the corresponding mesylate 36.1.
What is the full form of AZT?
AZT, in full azidothymidine, also called zidovudine, drug used to delay development of AIDS (acquired immunodeficiency syndrome) in patients infected with HIV (human immunodeficiency virus). AZT belongs to a group of drugs known as nucleoside reverse transcriptase inhibitors (NRTIs).
What is AZT in chemistry?
The full form of AZT is azidothymidine which is also called as zidovudine is a type of drug which is used to delay the development of AIDS in the patients which are affected by HIV(human immunodeficiency virus). The group of drugs from where AZT belongs is known as nucleoside reverse transcriptase inhibitors.
What is the process of reverse transcription?
The process of reverse transcription generates, in the cytoplasm, a linear DNA duplex via an intricate series of steps. This DNA is colinear with its RNA template, but it contains terminal duplications known as the long terminal repeats (LTRs) that are not present in viral RNA (Fig. 1).
Does reverse transcriptase work on DNA?
Reverse transcriptase (RT), also known as RNA-dependent DNA polymerase, is a DNA polymerase enzyme that transcribes single-stranded RNA into DNA. This enzyme is able to synthesize a double helix DNA once the RNA has been reverse transcribed in a first step into a single-strand DNA.
Is AZT a competitive inhibitor?
Since AZT is functioning as a competitive inhibitor, increasing thymidine concentrations may be one mechanism to overcome the inhibition and decrease AZT-related toxicity in these tissues.
What drugs prevent viruses from making capsids?
Currently, amantadine, vidarabine, trifluridine, idoxuridine, sciclovir, ribavirin, and zidovudine are used as antiviral drugs. The mechanism of antiviral activity consists of its transformation to triphosphate and subsequent inhibition of viral DNA synthesis.
What is AZT similar to?
AZT is a small molecule that is structurally similar to the nucleotide base thymidine.
How effective is AZT?
AZT may be effective in lowering HIV levels and boosting the immune system but its side effects are not understood in these patients. Detailed Description: There is a clear risk for development of AIDS in hemophilic patients. AZT administration has been shown to inhibit HIV replication in vitro.
