title: Mars sample 17
design: Metagenomic DNA was extracted from 1 g of crushed rocks using Dneasy PowerSoil Pro Kit (Qiagen, German), quality checked by electrophoresis using a 1.5% agarose gel and Nanodrop spectrophotometer (Thermofisher, USA) and quantified using the Qubit dsDNA HS Assay Kit (Life Technologies, USA). Shotgun metagenomic sequencing paired-end libraries were constructed and sequenced as 2150 bp using the Illumina NovaSeq platform.