In order to obtain added-value from the SparkBLAST similarity results on the cloud, the output from SparkBLAST processing of Experiment 1 was used to infer orthology relationships with the RBH approach. In Table 7, numbers represent (RBH) orthologs found between 2 species. Numbers in bold represent (RBH) paralogs found in the same species. The higher number of RBH shared by two species was 264 between Desulfovibrio vulgaris and Desulfovibrio desulfuricans, and the lower was 15 between Desulfovibrio fructosivorans and Deinococcus radiodurans. Among the same species, the higher number of RBH was 572 in Rhodobacter sphaeroides and the lower 34 in Deinococcus geothermalis. Regarding experiment 2: 1.27% (778,349/61255,260) of the Bermuda metagenomics proteins and 1.4% (68,748/4795,626) of the Búzios metagenomic proteins represent hits or potential homologs to the 10 radiation-resistant bacteria. Table 7Numbers of RBH found using data from SparkBLAST cloud processing Kineococcus Desulfovibrio Desulfovibrio Rhodobacter Escherichia Deinococcus Desulfovibrio Shewanella Geobacter Deinococcus Geobacter NameAccessionNumber of radiotolerans desulfuricans vulgaris sphaeroides coli radiodurans fructosivorans oneidensis sulfurreducens geothermalis metallireducens Numberproteins 224 43256335532221185220 Kineococcus NC_009660.14,632 radiotolerans 380 264121793816371882760 Desulfovibrio NC_011883.110,443 desulfuricans 362 6246179853472437 Desulfovibrio NC_002937.312,349 vulgaris 572 114464698775044 Rhodobacter NC_009429.120,954 sphaeroides 98 2426155342826 Escherichia NC_000913.34,140 coli 122 15212710217 Deinococcus NC_001263.17,671 radiodurans 84 20401738 Desulfovibrio NZ_AECZ01000069.14,028 fructosivorans 90 362132 Shewanella NC_004349.18,271 oneidensis 146 20120 Geobacter NC_002939.59,340 sulfurreducens 34 16 Deinococcs NC_008010.22,935 geothermalis 50 Geobacter NC_007517.13,592 metallireducens Numbers in bold represent (RBH) 354 paralogs found in the same species