FASTA Format

**Semantic type:** Qualitative Concept

**Definition:** A text-based format for representing either nucleotide sequences or peptide sequences. It consists of a single-line description, followed by lines of sequence data. Sequences are represented in the standard IUPAC-IUB (International Union of Pure and Applied Chemistry-International Union of Biochemistry Commission on Biochemical Nomenclature) single letter amino acid and nucleic acid base codes. It is an extension of the FAST-P (protein) and FAST-N (nucleotide) alignment tools.

**Synonyms:** - FASTA - FASTA - FASTA