README.txt --> this file All the genomes were dwnloaded on date 12.10.2018 Zipped files with [GROUPS]_[TYP]_[QUAL]_genomes.[PROGRAM].zip naming scheme are prebuilt indices of reference genomes downloaded from RefSeq that can be used for read mapping using a read mapper [PROGRAM]. [GROUPS] is/are one of A, B, F, and G or a combination of these. Where: A = Archaea B = Bacteria F = Fungi V = Viruses [TYP] is either SP for one reference per species or ST otherwise. [QUAL] is either CMP when only complete genomes (including chromosomes) are considered or ALL when draft genomes are considered as well. For example ABVF_SP_CMP_genomes.yara.zip --> A pre-built yara_mapper index containing Archaeal(A), Bacterial(B), Fungial(F) and Viral(V) genomes. The index contains 1 genome per species and only complete genomes are considered. [GROUPS]_[TYP]_[QUAL]_genomes.sldb --> a slimm database containing the mapping from accession to taxon id and other taxonomic information such as names and a partial taxonomic tree covering the corresponding databases with a similar name regardless of the read mapping program. For example ABVF_SP_CMP_genomes.sldb can be used together with sam files produced using indices: ABVF_SP_CMP_genomes.yara.zip or ABVF_SP_CMP_genomes.bowtie2.zip SRR1057982.fastq.gz --> a sample metagenomic read file.