BIOL 2P98 Lecture Notes - Lecture 9: Nucleoid, Mine, Ftsz
19 Jan 2016
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Prepares spore for germination: often results from heating, germination. Environmental nutrients are detected: water uptake and breakdown of cortex, cortex: layer of peptidoglycan. Exit spore coat & return to vegetative state: outgrowth. Bacterial cell division: growth: increase in the number of cells, binary fission: cell division following enlargement of a cell to twice its minimum size. Dna replication & cell division: most bacterial chromosomes are circular, contain a single origin of replication, replication starts on one site, dna replication begins at the origin and proceeds in both directions. Fts (filamentous temperature-sensitive) proteins are: interact & form a division apparatus called the divisome essential for cell division in all prokaryotes. Form at that part of the cell that elongated. Helps divide the big cell into 2: ftsz proteins polymerize to form a ring at the cell-division plane. Kept to either end of the cell. That"s why the ftsz ring forms in the centre.
