AAindex

AAindex is a database that gathers biophysical and chemical properties related to the amino acid sequences of proteins. It provides data on various physicochemical properties of amino acids, such as solubility, hydrophobicity, charge, size, and shape, closely related to many biological aspects like protein function, structure, interactions, and evolutionary adaptations. The database consolidates a vast amount of data derived from numerous studies and is extensively used in fields like bioinformatics, protein engineering, and molecular biology. Accessible online with a user-friendly interface, AAindex is an essential resource that researchers can easily use to search and utilize information.