Vesiculovirus

Vesiculovirus

Electron micrograph of Vesiculovirus

Vesiculovirus is a genus of viruses in the family Rhabdoviridae. Members of this genus are known to infect a variety of hosts, including mammals, insects, and fish. The most well-known species within this genus is the Vesicular stomatitis virus (VSV), which is often used as a model organism in virology research.

Structure

Vesiculoviruses are characterized by their bullet-shaped virions, which are approximately 180 nm in length and 75 nm in diameter. The viral envelope is derived from the host cell membrane and contains glycoproteins that are essential for viral entry into host cells. Inside the envelope, the virus contains a single-stranded, negative-sense RNA genome.

Genome

The genome of Vesiculovirus is approximately 11,000 nucleotides in length and encodes five proteins: the nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G), and the large protein (L). These proteins are involved in various stages of the viral life cycle, including replication, transcription, and assembly.

Life Cycle

The life cycle of Vesiculovirus begins with the attachment of the virus to the host cell surface via interactions between the viral glycoprotein and host cell receptors. Following attachment, the virus enters the cell through endocytosis. Once inside the cell, the viral RNA is released into the cytoplasm, where it is transcribed and replicated by the viral RNA-dependent RNA polymerase.

The newly synthesized viral proteins and RNA genomes are then assembled into new virions, which bud from the host cell membrane, acquiring their envelope in the process. This budding process often results in cell lysis and the release of new virions, which can go on to infect additional cells.

Pathogenesis

Vesiculoviruses can cause a range of diseases in their hosts. In livestock, such as cattle, horses, and pigs, Vesicular stomatitis virus can cause vesicular lesions in the mouth and on the feet, leading to economic losses. In humans, infection with Vesiculovirus is rare but can result in flu-like symptoms.

Research Applications

Vesicular stomatitis virus is widely used in research as a model to study viral replication and pathogenesis. Its ability to infect a wide range of host cells and its relatively simple genome make it an ideal candidate for genetic manipulation and vaccine development.

Related Pages

• Rhabdoviridae
• Vesicular stomatitis virus
• RNA virus
• Virus replication