what is FASTA format?

Answer Posted / jyotirindra majumdar

FASTA format is a text-based format for representing either
nucleotide sequences or peptide sequences, in which base
pairs or amino acids are represented using single-letter
codes. A sequence in FASTA format begins with a single-line
description, followed by lines of sequence data. The
description line is distinguished from the sequence data by
a greater-than (">") symbol in the first column. It is
recommended that all lines of text be shorter than 80
characters in length.

An example sequence in FASTA format is:

>gi|186681228|ref|YP_001864424.1|
phycoerythrobilin:ferredoxin oxidoreductase

MNSERSDVTLYQPFLDYAIAYMRSRLDLEPYPIPTGFESNSAVVGKGKNQEEVVTTSYAFQTAKLRQIRA

AHVQGGNSLQVLNFVIFPHLNYDLPFFGADLVTLPGGHLIALDMQPLFRDDSAYQAKYTEPILPIFHAHQ

QHLSWGGDFPEEAQPFFSPAFLWTRPQETAVVETQVFAAFKDYLKAYLDFVEQAEAVTDSQNLVAIKQAQ
LRYLRYRAEKDPARGMFKRFYGAEWTEEYIHGFLFDLERKLTVVK

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