9ac 11 6stepsinphagereplication 1

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: ided with 12 corners • Vary in the number of capsomers • Each capsomer may be made of 1 or several proteins • Some are enveloped 10 complex Fig 6.9a,c 11 6 steps in phage replication 1. adsorption – binding of virus to specific molecule on host cell 2. penetration –genome enters host cell 3. replication – viral components produced 4. assembly ­ viral components assembled 5. maturation – completion of viral formation 6. release – viruses leave cell to infect other cells Video 12 Fig 6.11 13 penetration 14 Bacteriophage assembly line 15 • Not all bacteriophages lyse cells • Temperate phages insert their viral DNA into the host chromosome & viral replication stops at there until some later time. • Lysogeny­ bacterial chromosome carries phage DNA 16 Host range • Spectrum of cells a virus can infect – cell has to have a specific structure (receptor) on its surface for viral attachment – ce...
View Full Document

This document was uploaded on 02/25/2014.

Ask a homework question - tutors are online