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Biology Notes on Retroviridae | Microbiology

The below mentioned article provides notes on retroviridae. The family Retroviridae falls under the Group VI (ssRNA-reverse transcribing viruses). The virions are enveloped, helical or isometric having two linear (+) sense ssRNA, reverse transcriptase and integrase. Examples are MLV [Murine leukemia virus and related virus e.g. Spumavirus (human foamy virus)], Lentivirus (human immunodeficiency virus or HIV), Visna virus, Deltaretrovints, Alpharetrovims. [...]

By |2016-11-28T11:04:41+00:00November 28, 2016|Animal Viruses|Comments Off on Biology Notes on Retroviridae | Microbiology
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Structure of Herpesviruses (HSV) | Microbiology

In this article we will discuss about the structure of herpesviruses (explained with diagram). All of them are morphologically identical. They are large with a varying diameter from 140-170 nm. The nucleocapsid is spherical icosahedral and of about 100 nm diameter which is enclosed in a 30 nm thick glycoprotein lipid envelope. Thickness of the envelope indicates for the presence [...]

By |2016-11-28T11:04:40+00:00November 28, 2016|Animal Viruses|Comments Off on Structure of Herpesviruses (HSV) | Microbiology
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Structure of Picornavirus | Microbiology

In this article we will discuss about the structure of picornavirus. Each capsid is composed of 60 copies of four structural proteins of which each proto-meter consists of four polypeptides known as VP1, VP2, VP3 and PV4. VP1-VP3 are exposed on the virion surface, while VP4 lies buried in close association with the RNA core (Fig. 17.21). All the VP [...]

By |2016-11-28T11:04:40+00:00November 28, 2016|Animal Viruses|Comments Off on Structure of Picornavirus | Microbiology
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