TABLE 1

Number and proportion of QC-filtered merged reads from metagenomic and metatranscriptomic libraries that mapped to various nucleic acid databases determined with Bowtie2 software

Read informationMeanSEM
No. of reads
    Metatranscriptomic reads mapped to Geobacter species86,988.176,732.52
    Metatranscriptomic reads mapped to Methanothrix species84,646.184,169.30
    Metagenomic reads mapped to Geobacter27,848.184,232.47
    Metagenomic reads mapped to Methanothrix21,421.683,568.21
    Metatranscriptomic reads mapped to metagenomic contigs23,073.771,521.34
    Metatranscriptomic reads mapped to unassembled metagenomic reads27,968.101,910.16
    Metatranscriptomic reads mapped to e-pilin genes1,147.87155.55
    Metatranscriptomic reads mapped to long type IV pilin genes1,278.93325.76
    Metagenomic reads mapped to e-pilin genes334.1110.42
    Metagenomic reads mapped to long type IV pilin genes275.2726.25
% of e-pilin reads mapped to Geobacter (metatranscriptome)66.542.50
% of e-pilin reads mapped to Geobacter (metagenome)82.395.42
% of long type IV pilin reads mapped to Geobacter (metatranscriptome)3.771.12
% of long type IV pilin reads mapped to Geobacter (metagenome)4.660.16