What is the viral structure of rabies?
What is the viral structure of rabies?
The rabies virus is a negative-sense, non-segmented, single-stranded RNA virus measuring approximately 60 nm × 180 nm. It is composed of an internal protein core or nucleocapsid, containing the nucleic acid, and an outer envelope, a lipid-containing bilayer covered with transmembrane glycoprotein spikes (Fig. 61-2).
How many genes are in the rabies virus?
GENOME ANNOUNCEMENT RABV has a nonsegmented, single-stranded, negative-sense RNA genome that is approximately 12 kb, comprising five genes that encode the nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G), and RNA-dependent RNA polymerase (L) (7, 11).
Are rabies a genetic disorder?
Rabies is a zoonotic disease caused by the rabies virus (RABV) that belongs to the Lyssavirus genus within the family Rhabdoviridae. RABV is a single-stranded, negative-sense, non-segmented RNA virus with a 12,000 nucleotide genome.
What is the scientific name for rabies virus?
Lyssavirus: Rabies virus
Rabies virus/Scientific names
What is the origin of the rabies virus?
Rabies appears to have originated in the Old World, the first epizootic in the New World occurring in Boston in 1768. It spread from there, over the next few years, to various other states, as well as to the French West Indies, eventually becoming common all across North America.
Why is rabies virus bullet?
The ribonucleocapsid complex ensures genome transcription and replication in the cytoplasm. The matrix protein M (formerly named M2) occupies an intermediate position between the ribonucleocapsid and the envelope, and is responsible for virus budding and the bullet-shaped morphology.
Is rabies DNA or RNA?
Rabies is an RNA virus. The genome encodes 5 proteins designated as N, P, M, G, and L. The order and relative size of the genes in the genome are shown in the figure below. The arrangement of these proteins and the RNA genome determine the structure of the rabies virus.
What is the causative agent of rabies?
Rabies is caused by a lyssavirus (a form of virus that causes encephalitis) that affects the saliva and nervous system.
How does the rabies virus replicate?
Rabies virus first replicates in striated muscle tissue at the site of inoculation. It then enters the peripheral nervous system at the neuromuscular junctions and spreads up the nerves to the central nervous system, where it replicates exclusively within the gray matter.
Who discovered the rabies virus?
On July 6, 1885, Louis Pasteur and his colleagues injected the first of 14 daily doses of rabbit spinal cord suspensions containing progressively inactivated rabies virus into 9-year-old Joseph Meister, who had been severely bitten by a rabid dog 2 days before.
Who created the first vaccine for rabies?
Louis Pasteur
Rabies vaccine/Inventors
French chemist Louis Pasteur who is regarded as the father of microbiology is renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurisation. He also invented the first-ever vaccines for anthrax and rabies.
Can the rabies virus mutate?
Notably, even single amino acid mutations in the proteins of Rabies virus can considerably alter its biological characteristics, for example increasing its pathogenicity and viral spread in humans, thus making the mutated virus a tangible menace for the entire mankind (33).
