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. 2003 Aug;185(15):4410–4417. doi: 10.1128/JB.185.15.4410-4417.2003

FIG. 4.

FIG. 4.

EMSA results from first round of SELEX. A 10 nM concentration of the 32P-labeled SELEX template was incubated with increasing amounts of recombinant SarA and resolved by native PAGE. The region of the gel indicated by the arrow was excised to recover bound DNA fragments for the second round of SELEX. Ten nanomolar SarA was used in all subsequent SELEX experiments.