It has the benefit of being blindingly unobvious about what it's not doing. It doesn't detect 'GNN', 'NNGYGY' and 'NNGNN' givn the input 'xxxxxxxGNNNxxxxxxxNNNGYGYxxxxxxxGYGYNNNxxxxxxxNNNGNNNxxxxxxx'

In reply to Re^4: Perl regular expression for amino acid sequence by ikegami
in thread Perl regular expression for amino acid sequence by seaver

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