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Sequence alignment of the primitive dehalogenase (DhlAS/T), the hypothetical mutant arising after the duplication of the 11-amino acid stretch, wild-type DhlA and the 10 selected mutants. The sequences are arranged according to an increasing length of the N-terminal part of the fusion. Repeats in the mutants are boxed, the part of the sequence involved in the repeat leading to the actual wild type is underlined.
