ysteria monocytogenes and Shigella flexern in based motility to spread to oth -Cause diarrhea, vomiting, fever, and can lead to menningitis and spontaneous abortions -Causes death in immunocompromised people (children, elderly, AIDS patients) -Produce a protein that encourages production of actin filaments at the cell surface -Propels bacteria through the cytoplasm (Comet tails) -Rams into the cytoplasmic membrane and pushes through into the next cell -Avoids much of the immune system Movies: http://cmgm.stanford.edu/theriot/movies.htm#Hits
18
Embed
Lysteria monocytogenes and Shigella flexerni use actin based motility to spread to other cells -Cause diarrhea, vomiting, fever, and can lead to menningitis.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Lysteria monocytogenes and Shigella flexerni use actin based motility to spread to other cells
-Cause diarrhea, vomiting, fever, and can lead to menningitis and spontaneous abortions
-Causes death in immunocompromised people (children, elderly, AIDS patients)
-Produce a protein that encourages production of actin filaments at the cell surface
-Propels bacteria through the cytoplasm (Comet tails)
-Rams into the cytoplasmic membrane and pushes through into the next cell
Close up of single bacterium (Vibrio) Bacteria (Vibrio) glowing on a petri dish
Vibrio fischeri and its host, the bobtail squid
Light organs on squid belly useVibrio to reflect the same wavelength of light as the moon, hiding their shadow from preditors
Pineapple fish-lower jaw contains a photophore whereVibrio reside. The bioluminescence attracts zooplankton.-glows orange during the day, blue green by night.
Vibrio and its host, the Pineapple fish
The angler fish uses bioluminescent bacteria to attract prey
Bioluminescence is very expensive so the cells only want to bioluminesce when other cells are around. No point if they’re not in the squid light organ.
Bacillus fruiting body. A sporulation gene was fused with lacZand the cells were plated on medium containing x-gal. You can see the where sporulation occurs by the dark blue color