Quorum Sensing Flashcards
1
Q
Quorum Sensing
A
Process of cell-cell communication by which bacteria monitor the density of members of their species and other species in an environment.
-biofilm formation, virulence, conjugation.
2
Q
Lux I
A
makes signaling molecule/inducer
-can freely diffuse
3
Q
Lux R
A
receptor, response regulator/gene expression activator
4
Q
Gram -
A
signal molecule can freely diffuse across membranes
Acyl homoserine lactone (AHL)
5
Q
Gram +
A
Oligopeptide mediated
Requires transporter
species specific
R/ RR two separate units
6
Q
Lux S/AI-2
A
Not specie specific
Made by 30+ different G-/G+species
7
Q
QS and biofilm
A
QS neccesary to initiate exopolysaccharide production
block qs and block biofilm
