Table 1.

Phenotype of ΔflcA mutant’s periplasmic flagella detected by cryo-ET.

Strain	No. of cells analyzed	Total no. of flagella detected*	No. of irregular flagella (%)	No. of short flagella (%)
WT	26	180	0 (0%)	4 (2.2%)
ΔflcA	26	134	46 (34.3)	58 (43.3%)
flcA+	46	366	0 (0%)	10 (2.7%)

^*Total number of periplasmic flagella (normal and abnormal) were detected from the cells analyzed shown in the left column. Percentages were determined by dividing the number of irregular periplasmic flagella by the total number of periplasmic flagella. A normal flagellum is defined as being oriented toward the other pole of the cell or cell body. An abnormal or irregular periplasmic flagellum is defined as being tilted toward the cell pole from where they were originated.