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Nucleotide sequence and amino acid translation of the yjfQ gene, encoding the repressor of the ula operon. The IS1 and IS30 insertion sites are marked by arrows, and the target sequences duplicated in the transposition processes are boxed. The amino acid position changed in the point mutant analyzed is circled. The nucleotide sequence deleted in strain JA211 is shaded, and the amino acid sequence at the N-terminal end corresponding to the helix-turn-helix motif is underlined.
