The common feature of Nuclear Localization Signals is
Many nuclear proteins contain NLSs that are rich in basic arginine and lysine residues, which may be located anywhere in the polypeptide chain. Reference: Harper; 30th edition
They are rich in acidic amino acid residues and are located at the C-terminus of the protein
They are rich in basic amino acid residues and are located at the C-terminus of the protein
They are rich in acidic amino acid residues and may be located anywhere in the protein sequence
They are rich in basic amino acid residues and may be located anywhere in the protein sequence
Structure and function of protein