Organic substance, found in all living cells, in which the hereditary information is stored and from which it can be transferred. Nucleic acid molecules are long chains that generally occur in combination with proteins. The viral genome is surrounded by a protein coating or shell called the capsid. The genome plus the capsid is called the nucleocapsid. A building block of nucleic acids , DNA , or RNA , the genetic material found in living organisms.
Nucleosides are nucleotides without the phosphate groups.
An artificial copy of a nucleoside . When incorporated into a virus DNA or RNA during viral replication, the nucleoside analog acts to prevent production of new virus. The HIV enzyme reverse transcriptase is more likely to incorporate the nucleoside analogs into the DNA it is constructing than is the DNA polymerase normally used for DNA creation in cell nuclei. A nucleoside analog antiretroviral drug whose chemical structure constitutes a modified version of a natural nucleoside . These compounds suppress replication of retroviruses by interfering with the reverse transcriptase enzyme.