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Bioinformatics & Cheminformatics

P3S (Protein structure similarity search)

Proteins can perform many different biological functions and so ensure most of the vital processes in the living organisms. From a chemical point of view, proteins are linear polymer chains made of only twenty kinds of amino acids. However, they can fold into various 3D structures resulting in huge functional diversity. The study of protein functions is one of the areas where similarity search in protein structure databases is widely used. The usage follows from the thesis that proteins having similar 3D structures also share similar biological function. Our tool P3S allows similarity search in protein structure databases. Currently it employs only the SProt similarity measure developed at Siret research group. However, support for other protein similarity measures is planned, for example the SABERTOOTH measure developed by AG Porto at the Universität zu Köln.