ERX1471037 ena-EXPERIMENT-UNAM-06-05-2016-17:43:51:585-1 Illumina HiSeq 2500 paired end sequencing ERP015336 PRJEB13763 major read coverage to recover diversity ERS1137008 SAMEA3949874 PM2_library WGS METAGENOMIC size fractionation gDNA library construction after size fractionation Illumina HiSeq 2500