| agrobacterium | 186 | genus | bacteria | | 357 |
| agrobacterium tumefaciens | 155 | species | bacteria | bacteria | 358 |
| rhodobacter | 151 | genus | bacteria | | 1060 |
| aspergillus nidulans | 151 | species | plants | fungi | 162425 |
| rhodopseudomonas | 150 | genus | bacteria | | 1073 |
| adeno-associated virus | 134 | species | viruses | viruses | 272636 |
| chrysosporium | 133 | genus | plants | | 40411 |
| synechococcus | 131 | genus | bacteria | | 1129 |
| thermus | 123 | genus | bacteria | | 270 |
| lactococcus lactis | 120 | species | bacteria | bacteria | 1358 |
| semliki forest virus | 119 | species | viruses | viruses | 11033 |
| halobacterium | 114 | genus | bacteria | | 2239 |
| synechocystis | 113 | genus | bacteria | | 1142 |
| aspergillus fumigatus | 109 | species | plants | fungi | 746128 |
| sindbis virus | 107 | species | viruses | viruses | 11034 |
| murid herpesvirus 1 | 105 | species | viruses | viruses | 10366 |
| anabaena | 104 | genus | bacteria | | 1163 |
| pyrococcus | 103 | genus | bacteria | | 2260 |
| sulfolobus | 103 | genus | bacteria | | 2284 |
| bradyrhizobium | 100 | genus | bacteria | | 374 |
| methylococcus | 98 | genus | bacteria | | 413 |
| lactobacillus casei | 97 | species | bacteria | bacteria | 1582 |
| methanobacterium | 97 | genus | bacteria | | 2160 |
| rhodospirillum | 96 | genus | bacteria | | 1081 |
| lactobacillus acidophilus | 95 | species | bacteria | bacteria | 1579 |
| thiobacillus | 93 | genus | bacteria | | 919 |
| nitrosomonas | 92 | genus | bacteria | | 914 |
| microcystis | 92 | genus | bacteria | | 1125 |
| lactobacillus plantarum | 92 | species | bacteria | bacteria | 1590 |
| ustilago | 92 | genus | plants | | 5269 |
| thermotoga | 91 | genus | bacteria | | 2335 |
| leuconostoc | 89 | genus | bacteria | | 1243 |
| acetobacter | 88 | genus | bacteria | | 434 |
| pediococcus | 88 | genus | bacteria | | 1253 |
| methanococcus | 88 | genus | bacteria | | 2184 |
| methylosinus | 87 | genus | bacteria | | 425 |
| caulobacter | 86 | genus | bacteria | | 75 |
| prochlorococcus | 86 | genus | bacteria | | 1218 |
| chromatium | 83 | genus | bacteria | | 1047 |
| methanosarcina | 83 | genus | bacteria | | 2207 |
| thermoplasma | 83 | genus | bacteria | | 2302 |
| micrococcus luteus | 82 | species | bacteria | bacteria | 1270 |
| aspergillus flavus | 81 | species | plants | fungi | 5059 |
| azospirillum | 80 | genus | bacteria | | 191 |
| adeno-associated virus - 2 | 79 | species | viruses | viruses | 10804 |
| zymomonas | 77 | genus | bacteria | | 541 |
| deinococcus | 77 | genus | bacteria | | 1298 |
| chondromyces | 75 | genus | bacteria | | 50 |
| oscillatoria | 75 | genus | bacteria | | 1158 |
| geobacter | 75 | genus | bacteria | | 28231 |
| sinorhizobium | 73 | genus | bacteria | | 28105 |
| lactobacillus rhamnosus | 71 | species | bacteria | bacteria | 47715 |
| nostoc | 70 | genus | bacteria | | 1177 |
| trichodesmium | 68 | genus | bacteria | | 1205 |
| acholeplasma laidlawii | 67 | species | bacteria | bacteria | 2148 |
| ectothiorhodospira | 66 | genus | bacteria | | 1051 |
| lyngbya | 65 | genus | bacteria | | 28073 |
| lactobacillus helveticus | 64 | species | bacteria | bacteria | 1587 |
| chloroflexus | 63 | genus | bacteria | | 1107 |
| chlorobium | 61 | genus | bacteria | | 1091 |
| thermococcus | 61 | genus | bacteria | | 2263 |
| spirulina | 60 | genus | bacteria | | 1154 |
| buchnera | 60 | genus | bacteria | | 32199 |
| archaeoglobus | 59 | genus | bacteria | | 2233 |
| human spumaretrovirus | 59 | no rank | viruses | viruses | 11963 |
| ruminococcus | 58 | genus | bacteria | | 1263 |
| listeria innocua | 58 | species | bacteria | bacteria | 1642 |
| hirudo medicinalis | 58 | species | invertebrates | | 6421 |
| bifidobacterium longum | 58 | species | bacteria | bacteria | 216816 |
| formosa | 58 | genus | bacteria | | 225842 |
| xanthobacter | 56 | genus | bacteria | | 279 |
| thiocystis | 56 | genus | bacteria | | 13724 |
| aspergillus terreus | 55 | species | plants | fungi | 33178 |
| azorhizobium | 54 | genus | bacteria | | 6 |
| serratia liquefaciens | 54 | species | bacteria | bacteria | 614 |
| nitrobacter | 54 | genus | bacteria | | 911 |
| thermoanaerobacter | 54 | genus | bacteria | | 1754 |
| spirillum | 53 | genus | bacteria | | 967 |
| bifidobacterium bifidum | 53 | species | bacteria | bacteria | 1681 |
| frankia | 53 | genus | bacteria | | 1854 |
| aquifex | 53 | genus | bacteria | | 2713 |
| nitrosospira | 53 | genus | bacteria | | 35798 |
| helminthosporium | 53 | genus | plants | | 58127 |
| methanosaeta | 52 | genus | bacteria | | 2222 |
| haloarcula | 52 | genus | bacteria | | 2237 |
| aphanizomenon | 51 | genus | bacteria | | 1175 |
| zoogloea | 50 | genus | bacteria | | 349 |
| beggiatoa | 50 | genus | bacteria | | 1021 |
| roseobacter | 50 | genus | bacteria | | 2433 |
| leptospirillum | 49 | genus | bacteria | | 179 |
| butyrivibrio | 49 | genus | bacteria | | 830 |
| butyrivibrio fibrisolvens | 49 | species | bacteria | bacteria | 831 |
| natronobacterium | 49 | genus | bacteria | | 2256 |
| mesorhizobium | 49 | genus | bacteria | | 68287 |
| nodularia | 49 | genus | bacteria | | 159191 |
| pectinatus | 48 | genus | bacteria | | 864 |
| haloferax | 48 | genus | bacteria | | 2251 |
| azoarcus | 48 | genus | bacteria | | 12960 |
| vitreoscilla | 47 | genus | bacteria | | 59 |
| desulfotomaculum | 47 | genus | bacteria | | 1562 |