Other protein transport system Flashcards
What is the fn of protein transport system
transport proteins and other things across PM and/or outside cell
What gram bacteria has type 3 secretion system
only gram -ive
describe the structure of T3SS
multiple proteins form a hollow syringe than spans PM and OM. also needlelike stricture on the outside
What happens when T3SS contacts a target eukarytoic cell
constructs a protein channel in eukaryotic cell’s PM. proteins pass from cytoplasm of bacteria to cytoplasm of eukaryotic cell
What gram bacteria uses type 4 secretion system
both gram -ive and +ive for conjugation
other than conjugation why does gram -ive use T4SS
secrete proteins or insert them into cytoplasm of eukarytoic cells
What is the stucture of T4SS in E. coli
multiple proteins form hollow tubes that span PM and OM
What is sexpillus
tubular structure attached to outer surface only used by gram -ive for conjugation
What is the fn of sexpillus
for donor cell to attach to recipient cell, then retracts, bringing 2 cells togther
A copy of a plasmid is transferred to the recipient cell using T4SS in which gram bacteria?
both -ive and +ive since the sexpillus is not required for this
What is the gram and shape of Helicobacter pylori
gram -ive, helical shaped rod, some strains cause stomach cancer
What is special about H. pylori
strains that cause stomach disease have a T4SS that injects CagA into stomach’s epithelial cells
