What does // means at the end of a fasta file?

Question

[biotech]

Is that necessary at all?

...
CTACCAGAGCACCTCGTTCCACGATGCGCTCTTCCTGCGCGACACGCTGGGCCTGCAGCGCGCTCCAGAA
TTCGAGGAATGGCTGCAGCGGCAGGGCCTGACCACGGCCGGGGGCCGGCTGCGCGACGGCGCCGCGCCGC
TCGCGCTGGCGCACGTGCTGGGCACGCAAGCCCGCTGAACAGCCCCACCGCCCCCGACGCCCCCAC//

Answer 1

[Devon Ryan]

It's likely that someone incorrectly copied/pasted the entry from Genbank. There, the records end with a "//". So go ahead and delete those characters.

[biotech]

This // is ok in GenBank files at the end of the sequences.