The membrane organization and subcellular location of a protein can provide information about its functional role. Historically, these data have been difficult to produce on a large scale for higher eukaryotic organisms. However, recent advances in membrane organization prediction methods and high-throughput subcellular localization assays have made it possible to generate these datasets. LOCATE is a curated, web-accessible database that houses data describing the membrane organization and subcellular localization of proteins from the FANTOM3 Isoform Protein Sequence set. Membrane organization is predicted by the high-throughput, computational pipeline MemO. The subcellular locations of selected proteins from this set were determined by a high-throughput, immunofluorescence-based assay and by manually reviewing over 1700 peer-reviewed publications. The results of the MemO pipeline and the subcellular localization methods are stored in the database with supporting information including a graphical depiction of the membrane organization juxtaposed with InterPro-predicted features and links to several external databases. The database is searchable by subcellular location, protein class, descriptive keyword, and sequence similarity. The data are retrievable in human- and machine-readable formats and in batch. ... [Information of the supplier]
We present a neural network based method (ChloroP) for identifying chloroplast transit peptides and their cleavage sites. Using cross-validation, 88% of the sequences in our homology reduced training set were correctly classified as transit peptides or nontransit peptides. This performance level is well above that of the so far only publicly available chloroplast localization predictor PSORT. Cleavage sites are predicted using a scoring matrix derived by an automatic motif-finding algorithm. Approximately 60% of the known cleavage sites in our sequence collection were predicted to within +- 2 residues from the cleavage sites given in SWISS-PROT. An analysis of 715 A. thaliana sequences from SWISS-PROT suggests that the ChloroP method should be useful for the identification of putative transit peptides in genome-wide sequence data. ... [Information of the supplier]
