It is a fasta xzipped file containing the representative protein sequences for each OPU assigned. Their names are ordinal, and can be retrieved by using the respective association name file generated in the results folder.
NOTE: Each input pair of files will have a rename.tsv file in the results folder. With it, you can cross info with representatives and the file of association of proteins and their representative.
This fasta file is for reference and potential reclustering with larger inputs.
Example:
>ERZ505229_0
MAQERKDRGFYSKYYREIDVVHGLQTKP[...]EETSPCAVANNISPEEARLTIEKNYAAR
>ERZ505229_1
MFFDSRRSSILATNGMVATSQPLAATTG[...]AQIIQRDPDTGVLRGGSEPRKDGCAVGY