9-Taxonomy_Viruses_Feb26

9-Taxonomy_Viruses_Feb26

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nisms, 13th EdiEon. Single- stranded DNA phage •  Phage ΦX174 is a plus strand DNA phage (same strand as mRNA). The minus strand must be syntheEzed first to produce a dsDNA genome, the replicaEve form. Brock Biology of Microorganisms, 13th EdiEon. Single- stranded RNA phage •  Phage MS2 is a plus strand RNA phage (same strand as mRNA). The minus strand must be synthesized first. •  The genome is first used as an mRNA and directs the synthesis of an RNA replicase (RNA- dependent RNA polymerase, this funcEon is not performed by the host) and other viral proteins. •  The replicase synthesizes a minus strand RNA that is used to produce addiEonal mRNA and addiEonal copies of the genome for the producEon of new virions. Brock Biology of Microorganisms, 13th EdiEon. Animal viruses •  In eukaryoEc cells, DNA replicaEon occurs in the nucleus. The genomes of DNA viruses will usually be replicated in the nucleus of the cell....
View Full Document

This note was uploaded on 03/20/2014 for the course PSYC 101 taught by Professor Catone during the Spring '07 term at CSU Fullerton.

Ask a homework question - tutors are online