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Question

What is the total number of amino acids when the capsid of TMV contains 2130 capsomeres?

A
162622
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B
948
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C
387921
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D
336540
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Solution

The correct option is D 336540
Tobacco mosaic virus (TMV) is a single-stranded RNA virus which infects the plants belonging to the family of Solanaceae. It is a rod-shaped virus, the capsid is pretentious coat and has the genetic material i.e., RNA. TMV has 2130 capsomeres. The protein monomer units consist of 158 amino acids which are assembled into four main alpha-helices, joined by a prominent loop proximal to the axis of the virion. Thus, the total number of the amino acid is 2130 x158 = 336540. Thus, the correct answer is option D.

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