This website was developed to demonstrate the approach proposed in the paper 'A nearest neighbor Approach for Automated Transporter Prediction and Categorization from Protein Sequences'. User guide: A protein sequence file with fasta format or user input in the text field should be submited. Parameters, such as e-value threshold, whether TMS filtering is used in the prediction algorithm, or email address for acceptance of submissions and notification of results, can be set if defaults are not used. The expected output is a txt file specifying which protein sequences within users' input are predicted as transporters. The details about categorized TC families,e-value and TMS information are also available. See the output of a .