Lecture 1- Polarity

Question 1

3 mechanisms of polarity establishment in bacteria

Answer 1

passive exclusion by the nucleoid
selective association with high-curvature membrane regions
diffusion of capture (polar protein already in place, another protein associates with it)

Question 2

2 mechanisms of localisation following division

Answer 2

inheritance of proteins from the site of division, or from the sidewall as proteins from the middle of the old cell will be at the pole of the new one- automatic displacement of peptidoglycans

Question 3

FtsZ

Answer 3

protein which assembles as a ring at the division site in E. coli
contracts using GTP, division triggered by a ‘divosome’

Question 4

DivIVA

Answer 4

protein in B. subtilis which forms complexes at the curved regions of the membrane which form during division and remain at the new pole

Question 5

example role of DivIVA

Answer 5

helps position the chromosomal origin of replication at the pole, mediated by a Par system, which helps DNA associate with SMCs and migrate appropriately

Question 6

actually giving up lol whoever gave this lecture is EVILLLLL