1. MRGM_kraken2_customdb/
     kraken2 custom database of 1,524 MRGM Genomes
     (using concatenated genomes for every 1,524 MRGM Genomes)

2.MRGM_metaphlan_customdb
     MetaPhlAn custom database of 1,524 MRGM Genomes
     (ex) metaphlan with options --index MRGM_20221205 --bowtie2db MRGM_metaphlan_customdb')