Package org.bridgedb

BridgeDb is a java library intended for dealing with identifiers for biological entities such as genes, proteins, metabolites.

In BridgeDb, a DataSource defines an online resource such as Ensembl or Entrez.

An Xref is the combination of an identifier and a particular resource, and thus uniquely defines a single biological entity. It is often possible to generate a URL to an online description of this biological entity.

Identifiers are preferably not descriptive. A descriptive name such as INSR (Insulin Receptor) instead of Entrez Gene 3643 can be useful. In BridgeDb we refer to this as a Symbol. Because of the ambiguous nature, Symbols are not the primary means for identifying

Usually, different DataSources describe the same biological entities. Cross references are stored in so called Synonym databases. IDMapper has facilities for mapping cross-references and mapping between different DataSources.