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PACSY (Protein structure And Chemical Shift NMR spectroscopY) is a relational database management system that integrates information from the Protein Data Bank, the Biological Magnetic Resonance Data Bank, and the Structural Classification of Proteins database. PACSY provides three-dimensional coordinates and chemical shifts of atoms along with derived information such as torsion angles, solvent accessible surface areas, and hydrophobicity scales. PACSY consists of six relational table types linked to one another for coherence by key identification numbers. Database queries are enabled by advanced search functions supported by an RDBMS server such as MySQL or PostgreSQL. PACSY enables users to search for combinations of information from different database sources in support of their research. Two software packages, PACSY Maker for database creation and PACSY Analyzer for database analysis, are available from


Woonghee Lee, Wookyung Yu, Suhkmann Kim, Iksoo Chang, Weontae Lee, John L Markley. PACSY, a relational database management system for protein structure and chemical shift analysis. Journal of biomolecular NMR. 2012 Oct;54(2):169-79

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PMID: 22903636

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