PPT-Survey of DNA Viruses Herpesviruses

Persistent Human Viruses 1 Large family of viruses 150200 nm in diameter 2The nucleocapsid is 100 nm in diameter with cubic symmetry and 162 capsomeres surrounded by a lipidcontaining envelope . The dis eases that these viruses cause have been described but their comparative taxonomy and host ranges require additional study All of these DNA viruses are classified in the family Herpesviridae but they belong to various taxonomic sub families Naidu . Rayapati. Associate Professor (Virology). Department of Plant Pathology. Irrigated Agriculture Research and Extension Center . Washington State University. Prosser, WA . 99350, USA. naidu.rayapati@wsu.edu. DNA Enveloped . Viruses. I. Objectives. In this lecture you will learn about properties, pathogenesis, clinical picture and diagnosis of: . Herpesviruses. . (HHVs 1 to 8). Poxviruses. Smallpox Virus. HIV infected T-cell. Viral Structure. not . cells. small . infectious particles . w/. DNA or RNA enclosed . in a protein coat . (capsid). in . some cases. , a membranous envelope. Viral Genomes. genomes . EQ: Why are viruses considered to be non-
living?. Characteristics:. *Nonliving particles made of . nucleic acid. and a . protein coat . enlosed in a . capsid. shell... *In order to reproduce, all viruses must have a . 8.1 What Is a Virus? Plus 9.1, 9.2 (parts). 8.2 Structure of the Virion. 8.3 Overview of the Virus Life Cycle. 8.8 . Temperate Bacteriophages and . Lysogeny. 8.10, 9.6, 9.7 Overview of Animal Viruses. © 2017 Pearson Education, Inc.. Introduction. A . virus . is an obligate, intracellular parasite . Viruses enter a . host. . cell. and use the host’. s biosynthetic machinery to reproduce and synthesize its proteins. Naidu . Rayapati. Associate Professor (Virology). Department of Plant Pathology. Irrigated Agriculture Research and Extension Center . Washington State University. Prosser, WA . 99350, USA. naidu.rayapati@wsu.edu. HHV. HERPES VIRUSES:. Enveloped ,dsDNA viruses. Similar morphologically but differ clinically and biologically. Three groups:. 1-ALPHA-HRPES VIRUSES. (. HSV. -1,. HSV-2,. AND . VZV. ). . 2-. BETA-HERPESVIRUSES. DNA . is a molecule in your cells’ nuclei that can be . used as instructions by your cells . to make new cells, and pigments for your hair and skin.. What is DNA again?. The DNA instructions are really a pattern of 4 different chemicals read as a code by the cell’s nucleus.. . . The process of transfer of virus into host is referred as . TRANSMISSION. and this is an important step in the life cycle of viruses.. Person to person infections are said to be . HORIZONTAL. . As a group discuss for 1 minute. Be able to defend your answer for the class!. Are . VIRUSES. alive?. Growth and Development. Reproduce. Change Over Time. Obtain and Use Energy. Maintain Homeostasis. . . Prof. Dr. Dalya Basil. . Introduction. . The . herpesvirus. family contains several of the most important human viral pathogens. . Clinically, the . herpesviruses. 1- Former member of the . Papovaviridae. family. Similar to . polyomaviruses. in some respects, but with a larger genome (8 . kbp. ) and particle size (55 nm). . 2-There are many genotypes of human papillomaviruses, also known as .