TABLE 1.

Quantitation of FtsZ and FtsA in cells

Species and strainNo. of molecules/cellReference
FtsZFtsA
E. coli
    BL21 (B/rA)15,000106
    B/rK4,000a740162
    W311010-14,000157
6,500a149
7,000a37
    MC41004,800119
B. subtilis6,250a1,00052
5,500a97081
S. pneumoniae3.750a2,20094
C. crescentus9,500a153
M. tuberculosis30,00044
M. smegmatis12,00044
  • a The FtsZ number has been increased by 25% from the reported value to account for the lower color of FtsZ relative to bovine serum albumin (BSA) in bicinchoninic acid (BCA) and Bradford assays (106, 119, 203).