Exam 3 quiz 1 Flashcards
microbial growth
increase in number of cells, how one cell becomes two
generation time/doubling time
time it takes to get from one cell to two cells
DNA replication
replicate chromosomes
Cell elongation
grow cell size
septum formation
beginning of seperation
chromosome replication and partitioning occurs
-all occurs at the very beginning of replication assuming from the start that they should be nicely regulated
caulobacter
-stalked bacteria
-typically in soiled environments
-uses a partitioning system called a par system
par system
-at replication initiation
-anchoring of the parent chromosome
Pop Z
-anchor
-proteins localized to the stalked pole
Par B
-finds chromosome
-bind to Par S sequence within the original chromosome
-once bound Par B can bind to Pop Z
where does replication occur
where Par B can find another Par S sequence
what drives the new chromosome to the other pole
Par A
Par A function
-ATPase motor protein
-binds to other end of Par B/Par S and binds to the other pole
name for the center between the two linked chromosomes
-structural maintenance of chromosome complex
-used to unlink the chromosomes
topoisomerase IV
unlinks
MukBEF protein
causes chromosomes to gravitate towards poles
septation
process of getting two cells
septation steps
-selection of the site where septum is formed
-assembly of FtsZ ring
-linkage of FtsZ ring to plasma membrane
-assembly of cell wall synthesizing macheniery
-construct cell and form septum
what is FtsZ ring made of
tubulin
3 proteins in septation site
-Min C
-Min D
-Min E
Min C and D
oscillating along intracellular track made by min E
Min E
track rotating on insdie of cell membrane, not constantly touching it
where is the least concentrated area on Min C and Min D
the midpoint because they spend the least amount of time there, selects exact midpoint for FtsZ to polymerize
Divisome
-forms when FtsZ lines up
-made of Fts A/Zip A, Fts K, and Fts I
Fts A and Zip A
cell membrane anchors
Fts K
binds chromosomes, chromosome segregation
Fts I
peptidoglycan synthesis
where does MreB associate
along cell membrane where elongation occurs; elongasome
