Table of Contents
What is the genome of mumps virus?
Genome. The mumps virus contains a nonsegmented, single-stranded, linear genome that is 15,384 nucleotides in length and made of ribonucleic acid (RNA). The genome has negative sense, so mRNA can be transcribed directly from the genome.
Is mumps a DNA or RNA virus?
Mumps virus is a paramyxovirus in the same group as parainfluenza and Newcastle disease viruses, which produce antibodies that cross-react with mumps virus. The virus has a single-stranded RNA genome. The virus can be isolated or propagated in cultures of various human and monkey tissues and in embryonated eggs.
What is the genome structure for measles virus?
The measles virus RNA genome consists of approximately 16,000 nucleotides and is enclosed in a lipid-containing envelope derived from the host cell. The genome encodes eight proteins, two of which (V and C) are nonstructural proteins and are transcribed from the phosphoprotein (P) gene.
Does mumps have an envelope?
Mumps virus is a negative-sense, single stranded RNA virus consisting of a ribonucleocapsid core enveloped by a lipid membrane derived from host cell, which causes mumps disease preventable by vaccination.
Are mumps enveloped?
Mumps is caused by the mumps virus (MuV), a member of the Paramyxoviridae family of enveloped, non-segmented, negative-sense RNA viruses.
Is mumps virus an envelope?
What type of genome does rubella have?
Rubella is caused by the rubella virus, which is the only member of the Rubivirus genus in the Togaviridae family. Rubella virus has a single-stranded positive-sense RNA genome with 9,762 nucleotides encoding two nonstructural (P90 and P150) and three structural (one nucleocapsid and two envelope [E1 and E2]) proteins.
Is rubella an enveloped virus?
Rubella virus is an enveloped, positive-stranded RNA virus classified as a Rubivirus in the Matonaviridae family.
Are measles enveloped?
Measles virus (MeV) induces measles in humans. MeV is a highly contagious enveloped virus carrying a negative single-stranded RNA genome and belongs to the Morbillivirus genus within the Paramyxoviridae family. The Paramyxoviridae family is divided into two subfamilies: Paramyxovirinae and Pneumovirinae.
What is the reservoir of mumps?
Humans are a reservoir for mumps virus. Transmission of mumps virus takes place by airborne or direct contact with an infected person’s fluid such as saliva or droplet nuclei. The virus lives in human cells located in the nose, mouth, eyes and on the skin.
Is mumps virus gram negative or positive?
Overview: Mumps virus is a single-stranded, negative-sense, enveloped RNA virus and a member of the Paramyxovirus family (Figure 1).
Is rubella enveloped?
The Virus. Rubella virus is an enveloped, positive-stranded RNA virus classified as a Rubivirus in the Matonaviridae family.
Are Togaviruses enveloped?
Togaviruses (family Togaviridae) are enveloped and icosahedral viruses that possess a positive-sense single-strand RNA genome of 11 kb. Members of this family are frequently referred to as alphaviruses, a genus of this family.
Are Alphaviruses enveloped?
Alphavirus particles are enveloped, have a 70 nm diameter, tend to be spherical (although slightly pleomorphic), and have a 40 nm isometric nucleocapsid.
What is the structure of the mumps virus?
What cells affect mumps?
It has been suggested that mumps virus targets T cells, because the virus has a high affinity for T cells and efficiently replicates in these cells.
Is rubella single-stranded?
Rubella virus, scientific name Rubivirus rubellae, is a member of the genus Rubivirus and belongs to the family of Matonaviridae, whose members commonly have a genome of single-stranded RNA of positive polarity which is enclosed by an icosahedral capsid.
What are Capsomeres made of?
The penton capsomere is composed of a homotrimeric fiber and homopentameric penton base at the 12 vertices of the icosahedron. Together with fiber, penton base has a major role in Ad cellular internalization.
What is the difference between alphavirus and flavivirus?
Flavivirus virions are spherical, ca. 50 nm in diameter, and consist of a nucleoprotein capsid enclosed in a lipid envelope. The RNA is a single 40S (ca. 10.9 kilobases) positive-sense strand and is capped at the 5′ end, but, unlike alphaviruses, has no poly A segment at the 3′ end.