What is the structure of tobacco mosaic?


What is the shape of tobacco mosaic?

TMV is made up of a piece of nucleic acid (ribonucleic acid; RNA) and a surrounding protein coat. The complete virus is a submicroscopic, rigid, rod-shaped particle.

What is the structure and composition of TMV?

Structure of TMV:TMV is a simple rod-shaped helical virus (see fig) consisting of centrally located single-stranded RNA enveloped by a protein coat. The rod is considered to be 3,000 Å in length and about 180 Å in diameter. The protein coat is technically called ‘capsid’.

Who describe the structure of TMV?

TMV was the first virus to ever be discovered. It is composed of 2130 identical coat protein subunits following the right-handed helix of an accompanying RNA strand to produce a 300 nm hollow cylinder with an outer diameter of 18 nm and a 4 nm wide central channel.

What are the two component in TMV structure?

Tobacco mosaic virus (TMV) encodes four known functional proteins: the 126 and 183 kDa replication-associated proteins, the movement protein (MP), and the structural capsid or coat protein (CP).

How can we prevent tobacco mosaic virus?

To control the spread of TMV, farmers must: wash their hands after handling infected plants. wash tools that have come into contact with infected plants in detergent or bleach. rotate the crops they grow in a contaminated field – they must not grow tobacco or tomato plants in the field for at least two years.

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Can humans get TMV?

Tobacco mosaic virus (TMV), a widespread plant pathogen, is found in tobacco (including cigarettes and smokeless tobacco) as well as in many other plants. Plant viruses do not replicate or cause infection in humans or other mammals.

What is TMV with diagram?

Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus species in the genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae.

Tobacco mosaic virus
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota

Is DNA present in TMV?

Tobacco mosaic virus does not have DNA as the genetic material.

What is the shape of TMV capsid?

Structure of TMV: – TMV possesses a rod-like appearance. Its capsid is made from 2130 molecules of lined proteins called capsomeres and one molecule of genomic single stranded RNA. – All the capsomeres (coat protein) are organized and are developed into a rod-like helical structure.