Figure 2.

Database Schema. BiGG is hosted on a Simpheny™ server running an Oracle database. Starred columns indicate primary keys. Arrows indicate foreign key relationships. GPR_table stores the relationship between reactions, proteins, and genes. All tables and entries shown in black are directly viewable by the user. Grey entries are used internally only. GPRXML (marked by *) is a function which returns the XML formatted GPR string given a reaction ID.

Schellenberger et al. BMC Bioinformatics 2010 11:213   doi:10.1186/1471-2105-11-213
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