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Alignment of putative HTH in BldD with the LysR family HTH signature sequence (Prosite; PS00044). Amino acid (aa) positions within BldD are indicated, and the HTH is boxed. ∗, amino acid matching the signature sequence; #, mismatch. All possible amino acids allowed at each position of the signature sequence are shown in a column, and positions where any amino acid is allowed are designated by dashes.
