FASTA file format
FASTA files are commonly used when submitting sequences to ENA. The header must hold the entry name when the sequence is being submitted as part of a genome assembly submission, however the header content is not important for non-assembly sequence submissions.
Genome assembly submission example
The entry_name used in the header must be unique in a genome assembly submission. The FASTA file then follows the format:
>contig1 OR scaffold1 OR chromosome1 GATCAACGCAAAGGACTAAGCACTGCTGCCAAAAGCCACCAGCCCCAGAGACAACAGAGG CTCCCAAATTTCTAGCCTCTGATCTCTGCCTCGGAACATTCTTGGGTCAAAATAAATGTG