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The QLQ domain is characterized by the conserved Gln-Leu-Gln residues. Another
feature of this domain is the absolute conservation of bulky
aromatic/hydrophobic and acidic amino acid residues such as Phe, Trp, Tyr,
Leu, Glu, or their equivalents in terms of chemical and radial properties. The
Pro residue is also absolutely conserved. These amino acid residues are
critical for the function of the QLQ domain, probably for protein-protein
Some proteins known to conatin a QLQ domain are listed below:
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