Analysis of the sequence in short: A Guide to Common Tools and Databases pulls together all the important information about the most commonly used databases, analytical tools, and tables used in sequence analysis. The first section, "Databases" contains examples of flatfiles of major databases (GenBank, EMBL, SWISS-Prot), the definition of the codes or fields used in each database, and the type of sequence features / requirements and qualifications for the nucleotide and protein databases. The tables in this section include nucleotide and protein codes, genetic codes, and other relevant information.