Marker genes are protein-coding?

Hello

I am wondering if you could help answer some questions about marker genes?
I understand the sequences in mpa_vOct22_CHOCOPhlAnSGB_202403.fna.bz2 are marker sequences.

  1. are these sequences are protein-coding genes?
  2. if yes, do you have the annotation files link to the genes used in humann database?
  3. or if yes, do you have the corresponding protein sequences and their annotations?
    Thank you so much!