- By comparison to positive controls (E. coli R721 without plasmids), interactions with less than 50% of residual ß-galactosidase activity (framed) were considered as positive. FtsZNg self-interaction was used as a positive control. The numbers represent percentage of mean ß-galactosidase activity, ± standard deviation
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*Statistically significant (P ≤ 0.05); NS: not statistically significant (P > 0.05)