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Orthopoxvirus particles. A DNA virus is a virus that has a genome made of deoxyribonucleic acid (DNA) that is replicated by a DNA polymerase.They can be divided between those that have two strands of DNA in their genome, called double-stranded DNA (dsDNA) viruses, and those that have one strand of DNA in their genome, called single-stranded DNA (ssDNA) viruses. dsDNA viruses primarily belong ...
Single-stranded DNA viruses (7 C, 13 P) Pages in category "DNA viruses" The following 14 pages are in this category, out of 14 total.
Examples of DNA viruses Virus family Examples (common names) Virion naked/enveloped Capsid symmetry Nucleic acid type Group 1. Adenoviridae: Canine hepatitis virus, Some types of the common cold: Naked Icosahedral ds I 2. Papovaviridae: JC virus, HPV: Naked Icosahedral ds circular I 3. Parvoviridae: Human parvovirus B19, canine parvovirus ...
The intermediate phase of replication is critical because, on that stage, the virus affects the host's normal function and modifies it more optimally to itself. For example, the virus can inhibit host apoptosis and block the antiviral state. On the replication, poxviruses have their enzymes for example vaccinia virus has decapping enzymes D9 ...
The genetic material within virus particles, and the method by which the material is replicated, varies considerably between different types of viruses. DNA viruses The genome replication of most DNA viruses takes place in the cell's nucleus. If the cell has the appropriate receptor on its surface, these viruses enter the cell either by direct ...
DNA replication separates the early and late phases. Once the early genes have liberated adequate virus proteins, replication machinery, and replication substrates, replication of the adenovirus genome can occur. A terminal protein that is covalently bound to the 5' end of the adenovirus genome acts as a primer for replication.
Other common vectors are adeno-associated viruses, which have lower toxicity and longer term expression, but can only carry about 4kb of DNA. [11] Herpes simplex viruses is a promising vector, have a carrying capacity of over 30kb and provide long term expression, although it is less efficient at gene delivery than other vectors. [12]
Most organisms use DNA, but many viruses have RNA as their genetic material. The DNA or RNA of viruses consists of either a single strand or a double helix. [28] Viruses can reproduce rapidly because they have relatively few genes. For example, influenza virus has only eight genes and rotavirus has eleven. In comparison, humans have 20,000 ...