{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Systems Microbiolo33 - ° Also for genetic engineering...

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

View Full Document Right Arrow Icon
Systems Microbiology 􀂃 General properties of viruses o Viruses are characterized by being able to replicate their nucleic acids independent of the cell, but completely dependent on the cellular function o There are huge numbers of viruses out there o They infect people, animals, plants, bacteria (bacteriophage) o Extracellular forms (virions) just wait, until they can become active o There are bacteria that live symbiotically/parasitically in other cells, so that they cannot live independently, but these are not viruses 􀂃 One clear way to distinguish them is that bacteria have both DNA and RNA, while viruses have only one or the other o Viruses have a huge range in size o Viruses are essential tools for genetic analysis
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ° Also for genetic engineering, synthetic biology ° Viral structure o Nucleic acid can be quite long, coiled. The size of the virion is limited by the size of the nucleic acid. o Two structures: ° Helical symmetry ° Icosahedral symmetry o Some viruses combine both symmetries ° These attack only bacteria and archaea – you don’t find them in animal viruses ° These are called complex viruses o Some animal viruses have outer membrane envelopes ° This allows them to merge cytosol with the animal cell and enter ° This lipid bilayer is derived from the host cell ° However, the proteins in this membrane are viral-encoded....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern