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[Gofriends] New inter- and intra-ontology links in GO

Tanya Berardini tberardi at
Thu Feb 26 15:01:57 PST 2009

On Feb. 17, 2009,  the Gene Ontology Consortium added 'regulates' links

       -  within the molecular function (MF) ontology
       -  between the biological process (BP) and MF ontologies.

A special 'extended' version of the ontology, gene_ontology_ext.obo,
contains these new intra-MF and inter-ontology links. The file is available
at the following URL:

It is recommended that production databases and tools do *not* switch to
this URL until they are capable of handling these new links.

Please note that the new links get filtered out from the standard GO
releases available from the usual locations:

This is to give software developers additional time to adapt their tools.

Note that the regulates relationships *within* BP will continue to be
present in the above files, as they have been for the past 1 year. No action
needs to be taken - the structure of the GO available at the standard URLs
has not changed substantially.  More information is available here:

If you have any questions, please mail this list or
gohelp at

The GO Consortium
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