Fig. 3.

BioXSD format of a sequence record including the sequence and optional metadata. (A) Diagram showing the structure of the sequence record (example type is specialized towards nucleotides). (B) Restricting pattern of the sequence string (example is a general amino-acid sequence type allowing ambiguous and additional residues: Pyl and Sec). (C) Example of a simple sequence record in BioXSD. (D) Example of a BioXSD sequence record with more metadata. Figure highlights which metadata elements are textual and focus purely on human understandability, and which are formally structured allowing more automatic usage by computer applications.