5 - Chapter 4 bacteriophage Bacteriophages phages are...

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Unformatted text preview: Chapter 4 bacteriophage Bacteriophages ( phages ) are obligate intracellular parasites that multiply inside bacteria by making use of some or all of the host biosynthetic machinery . They are viruses that infect bacteria. Composition of Bacteriophage Nucleic acid: either DNA or RNA but not both ds DNA, ss RNA, ss DNA unusual or modified bases encode 3-5 gene products to over 100 gene products Protein: function in infection and protect the nucleic acid Structure of Bacteriophage different sizes and shapes icosahedral 二二二二 filamentous Tail Tail Fibers Base Plate Head Contractile Sheath Capsid DNA Types of Bacteriophage Lytic or Virulent Phages 毒毒毒毒毒 Lysogenic or Temperate Phage 毒毒毒毒毒毒毒毒毒毒毒毒 Lytic or Virulent Phages Definition: Lytic or virulent phages are phages which can only multiply in bacteria and kill the cell by lysis at the end of the life cycle....
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This note was uploaded on 12/27/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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5 - Chapter 4 bacteriophage Bacteriophages phages are...

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