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TopFIND is a protein-centric database for the annotation of protein termini currently in its third version. Non-canonical protein termini can be the result of multiple different biological processes, including pre-translational processes such as alternative splicing and alternative translation initiation or post-translational protein processing by proteases that cleave proteases as part of protein maturation or as a regulatory modification. Accordingly, protein termini evidence in TopFIND is inferred from other databases such as ENSEMBL transcripts, TISdb for alternative translation initiation, MEROPS for protein cleavage by proteases, and UniProt for canonical and protein isoform start sites.
The Ligand-Gated Ion Channel database provides access to information about transmembrane proteins that exist under different conformations, with three primary subfamilies: the cys-loop superfamily, the ATP gated channels superfamily, and the glutamate activated cationic channels superfamily. The development of the Ligand-Gated Ion Channel database was started in 1994, as part of Le Novère's work on the phylogeny of those receptors' subunits. It grew into a serious data resource, that served the community at large. However, it is not actively maintained anymore. In addition, bioinformatics technology evolved a lot over the last two decades, so that scientists can now generate quickly customised databases from trustworthy primary data resources. Therefore, we decided to officialy freeze the data resource. The resource will not disappear, and all the information and links will stay there. But people should not consider it as an up-to-date trustable resource. For any new work, they should consider using alternative sources, such as UniProt, Ensembl, Protein Databank etc.
The RESID Database of Protein Modifications is a comprehensive collection of annotations and structures for protein modifications including amino-terminal, carboxyl-terminal and peptide chain cross-link post-translational modifications.