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Ultrastructure of Bacterial Viruses

  • Anna S. Tikhonenko

Table of contents

  1. Front Matter
    Pages i-x
  2. Anna S. Tikhonenko
    Pages 33-61
  3. Anna S. Tikhonenko
    Pages 63-76
  4. Anna S. Tikhonenko
    Pages 77-99
  5. Anna S. Tikhonenko
    Pages 147-160
  6. Anna S. Tikhonenko
    Pages 217-235
  7. Anna S. Tikhonenko
    Pages 267-270
  8. Back Matter
    Pages 271-294

About this book

Introduction

Mter the discoveryof the tobacco mosaic virus by D. I. Ivanov­ skU in 1892 [14], the new science of virology was born and began to develop rapidly. The number of viruses now known is enormous and they can infect nearly all animal and plant organisms. Microorganisms themselves are no exception to this rule. Despite intensive study of Vlruses, their origin and nature are still a subject for speculation and hypothesis. The general concept of viruses embraces a wide group of biologically active structures occupying an intermediate position between living and nonliving matter. The dual character of viruses is determined by the fact that, while they do not possess an inde­ pendent system of metabolism, which is a characteristic feature of every living being, they nevertheless carry within themselves all the necessary information for autoreproduction. A striking feature of the virus is that it consists essentially of two components: a protein envelope and the nucleic acid con­ tained within it. In contrast to the elementary structural unit of the living or­ ganism, the cell, which contains two types of nucleic acid (DNA and RNA), the virus particle contains only one type of nucleic acid - either DNA or RNA. It is perhaps this which is responsible for the imperfection of the virus as a living organism.

Keywords

DNA RNA bacteria cell metabolism microorganism production protein reproduction virology virus

Authors and affiliations

  • Anna S. Tikhonenko
    • 1
  1. 1.Institute of Molecular BiologyAcademy of Sciences of the USSRMoscowUSSR

Bibliographic information

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