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<p>A <b>nuclear localization sequence</b>, or <b>signal</b> (<b>NLS</b>) is an <a href="page.php?w=amino_acid">amino acid</a> <a href="page.php?w=sequence_motif">sequence motif</a> that 'tags' a protein for import into the <a href="page.php?w=cell_nucleus">cell nucleus</a> by <a href="page.php?w=nuclear_transport">nuclear transport</a>. Typically, this signal consists of one or more short sequences of positively charged <a href="page.php?w=lysine">lysine</a>s or <a href="page.php?w=arginine">arginine</a>s exposed on the protein surface. Different</p><p>
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