Search these websites for a specific amino acid sequence and for information on specific proteins.
The International Nucleotide Sequence Database Collaboration (INSDC) is a joint operation of three different centers: European Bioinformatics Institute (EBI), the DNA Databank of Japan (DDBJ) and NIH GenBank that operates out of the National Center of Biotechnology Information (NCBI).
Most sequence tools require a FASTA format of the sequence to run their tests. This text-based format uses single-letter codes to represent base pairs or amino acids. The first line of the FASTA, called the header, is descriptive and always starts with a >. The remainder of the format consists of the sequence. Click for a short description of the format and a list of the single letter codes.