NMR-STAR
NMR-STAR is an extension of the Self-defining_Text_Archive_and_Retrieval, STAR file format to store the results of Nuclear_magnetic_resonance_spectroscopy_of_proteins, biological NMR experiments. Chemical file formats {{chem-software-stub ...
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Self-defining Text Archive And Retrieval
The Self-Defining Text Archive and Retrieval (STAR) File, or simply the STAR File, is a text-based file format for storing structured data. It was proposed in 1991 by Sydney R. Hall. The format became widely used in molecular-structure sciences, although it is not specific to this field—it was designed as a universal approach to electronic data exchange and archiving. One characteristic feature of the STAR File format is that ''data names'' (keys in key–value pairs) start with the underscore. They are separated from ''data values'' only by white space, for example: _format "STAR File" _first_published 1991 The format was designed to provide a concise syntax for tabular data. The construct for this is called ''loop''. Loops start with the loop_ keyword followed by names corresponding to columns and then by values. loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance O1 C8 1.301(3) O1 Na1 2.161(2) O2 C36 1.425(4) O2 C39 1.425(4) O2 Na ...
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