Email updates   Open Access Highly Accessed Software   Richard G
Côté, Philip Jones, Lennart Martens, Samuel Kerrien, Florian
Reisinger, Quan Lin, Rasko Leinonen, Rolf Apweiler and Henning
Hermjakob*  Author affiliations  European Bioinformatics
Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge,
CB10 1QY, UK  For all author emails, please log on.  Citation
and License  BMC Bioinformatics 2007, 8:401 
doi:10.1186/1471-2105-8-401  Published: 18 October 2007    Each
major protein database uses its own conventions when assigning
protein identifiers. Resolving the various, potentially
unstable, identifiers that refer to identical proteins is a
major challenge. This is a common problem when attempting to
unify datasets that have been annotated with proteins from
multiple data sources or querying data providers with one
flavour of protein identifiers when the source database uses
another. Partial solutions for protein identifier mapping exist
but they are limited to specific species or techniques and to a