/usr/share/EMBOSS/test/data/protgap.fasta is in emboss-test 6.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | >FASTA F00001 FASTA FORMAT PROTEIN SEQUENCE
AC..DEFGHIKLMNPQRSTVWY*
ABCDEF--GHIKLMNOPQRSTUVWXYZ*
abcdef--ghiklmnopqrstuvwxyz*
ACDEFGHIKLMNPQRSTVWY
ACDEFGHIKLMNPQRSTVWY
ACDEFGHIKLMNPQRSTVWY~~~
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