PPT-Survey of DNA Viruses Papillomaviruses

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 2There are many genotypes of human papillomaviruses also known as . 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. viruses that induce development of mostly benign, but occasionally malignant, neoplastic lesions in mammals and birds. Compared with mammalian infections, reports on avian papillomatosis are rath e 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. 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 . 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.. -It’s not a plant or an animal.. -It’s not a fungi, protist, or bacteria.. WHAT IS A VIRUS?. A virus is an . infectious. agent made up of . nucleic. acid (. DNA. or . RNA. ) wrapped in a . protein. . . 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. . (Assistant Professor). College of Fisheries, . Kishjanganj. BASU, Patna. Characteristics of viruses. Viruses may be regarded as . exceptionally complex aggregations . of . nonliving chemicals . or . exceptionally simple living microbes. 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. (. Persistent Human Viruses. ). 1- Large family of viruses 150–200 nm in diameter. . 2-The . nucleocapsid. is 100 nm in diameter, with . cubic symmetry . and 162 . capsomeres. , surrounded by a lipid-containing envelope. . ANSWERS CAN BE FOUND IN CHAPTER 19 SECTION 2 on VIRUSES (you need to look at the WHOLE SECTION).. HELPFUL START PAGE= 474. Bacteria & Viruses . What’s the difference??. A little review…. A little review….