Primary Accession Number


Primary Accession Number
Every database entry has a unique primary accession number. It appears on the AC line of an entry. The format is either 1 letter + 5 digits (e.g. X00123), 2 letters + 6 digits (e.g. AJ000123), or 4 letters + 8 digits (for WGS, e.g. BAAC01000001).