Abstract

MS2DB+ is an open-source platform-independent web application for determining, in polynomial time, the disulfide linkages in proteins using tandem mass spectrometry (MS/MS) data. It utilizes an efficient approximation algorithm which allows the consideration of multiple ion-types (a, a(o), a*, b, b(o), b*, c, x, y, y(o), y*, and z) in the analysis. Once putative disulfide bonds are identified, a graph optimization approach is used to obtain the most likely global disulfide connectivity pattern.

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