Metabolic Regulation (Part 2) Flashcards
What is quorum sensing?
Responding to density
What processes are regulated by quorum sensing?
Toxin production in pathogens, light emission, biofilms, antibiotic production, and sporulation
Autoinducer
Signal molecule, acyl homoserine lactone (AHL)
What are heat shock proteins used for?
They prevent protein aggregation and are used as chaperone proteins
RpoH
Alternative sigma factor
DnaK
Inactivates RpoH under normal temperatures
RpoH controls what?
Expression of cytoplasmic proteins under heat shock
RpoE controls what?
Expression of periplasmic and membrane proteins under heat shock
DnaK
Inactivates RpoH under normal temperatures
What is the CRISPR antiviral defense system?
Clustered Regularly Interspaced Short Palindromic Repeats-memory bank of viral sequences
What are riboswitches?
Catalytically active RNA molecules
What are some examples of riboswitches?
Thiamine, riboflavin, cobalamin, some amino acids, purines, and peptidoglycan precursor