a "repeat" is any sequence block that returns more than one time in the sequence, either in an identical or a highly similar form. The degree of similarity can be highly variable, with some repeats maintaining only a few conserved amino acid positions and a characteristic length. Highly degenerate repeats can be very difficult to detect from sequence alone. Structural similarity can help to identify repetitive patterns in sequence.

Structure

Repetitiveness does not in itself indicate

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