Techniques for analyzing one or more protein structures. In one aspect of the invention, the technique comprises the following steps. A normalized second-order hydrophobic moment is determined for a protein structure. The normalized second-order hydrophobic moment is then used for analysis of the protein structure. A scoring function in accordance with the normalized second-order hydrophobic moment for the protein structure may be determined. A score for the protein structure may then be generated using the scoring function. The scoring function may represent an integral of the normalized second-order hydrophobic moment. The scores may be generated for a plurality of protein structures. The scores generated for the plurality of protein structures may then be compared.