Spreadsheet: 515a0511-15b3-4f19-888a-8dda2d9d2b8b
Sheet: Modules 1-9

Additional File 2.  [NAME] integrating each structural module.
*  [NAME] according wirth KEGG database.
** Detected through metabolome data.
*** Ration of metabolic abundance between nitrogen fixation (Bact) and Free-living conditions (FL).
° Detection in KEGG.
°° Specifc biological role in KEGG database.
[NAME] with a defined biological role and with a null ratio indicates those detected only in FL.
[NAME] detected only during bacterial nitrogen fixation were excluded in the analysis.
 | Cnumber* | metabolome** | Ration(Bact/VL)*** | KEGGbiolrole° | BiolRole°°
Module 1 | C00559 | False | 0 | True | Nucleic acids
 | C00360 | True | 1.4 | True | Nucleic acids
 | C00672 | False | 0 | False | --
 | C05512 | False | 0 | False | --
 | C00362 | False | 0 | True | Nucleic acids
 | C00330 | False | 0 | True | Nucleic acids
 | C00881 | False | 0 | True | Nucleic acids
 | C00526 | False | 0 | True | Nucleic acids
 | C00239 | True | 0.5 | True | Nucleic acids
 | C00361 | False | 0 | True | Nucleic acids
 | C00286 | True | 0 | True | Nucleic acids
 | C03279 | False | 0 | False | --
 | C02376 | False | 0 | False | --
 | C00178 | False | 0 | True | Nucleic acids
 | C01346 | False | 0 | True | Nucleic acids
 | C00365 | False | 0 | True | Nucleic acids
 | C00460 | False | 0 | True | Nucleic acids
 | C00214 | True | 1.9 | True | Nucleic acids
 | C02642 | True | 0.5 | False | --
 | C00429 | False | 0 | False | --
 | C00106 | True | 12 | True | Nucleic acids
 | C00380 | True | 3.8 | True | Nucleic acids
 | C00299 | True | 4.5 | True | Nucleic acids
 | C00458 | True | 0 | True | Nucleic acids
 | C00705 | True | 0 | True | Nucleic acids
 | C00342 | False | 0 | False | --
 | C00112 | True | 4.5 | True | Nucleic acids
 | C00343 | False | 0 | False | --
Module 2 | [NAME] | True | 11 | True | Nucleic acids
 | C00212 | True | 6.1 | True | Nucleic acids
 | C00019 | True | 7.2 | False | --
 | C02967 | False | 0 | False | --
 | C00021 | True | 0.5 | False | --
 | C00039 | False | 0 | False | --
 | C03539 | False | 0 | False | --
 | C00155 | False | 0 | True | Peptides
 | C00073 | False | 0 | True | Peptides
 | C00234 | False | 0 | False | --
 | C03294 | False | 0 | False | --
 | C03838 | False | 0 | False | --
 | C00440 | False | 0 | False | --
 | C02430 | False | 0 | False | --
 | C01647 | False | 0 | False | --
 | C00101 | False | 0 | False | --
Module 3 | C04691 | False | 0 | False | --
 | C00944 | False | 0 | False | --
 | C02637 | False | 0 | False | --
 | C00131 | True | 0 | True | Nucleic acids
 | C00631 | True | 14 | False | --
 | C00074 | True | 2.4 | False | --
 | C00691 | False | 0 | False | --
 | C00137 | False | 0 | False | --
 | C00024 | True | 2.5 | False | --
 | [NAME] | False | 0 | False | --
 | C01530 | False | 0 | True | Lipids
 | C00249 | False | 0 | True | Lipids
 | [NAME] | False | 0 | False | --
 | C00222 | False | 0 | False | --
 | C00940 | False | 0 | False | --
 | C00133 | False | 0 | True | Peptides
 | C00041 | False | 0 | True | Peptides
 | C00886 | False | 0 | False | --
 | C01635 | False | 0 | False | --
 | C03740 | False | 0 | False | --
 | C00206 | True | 1.2 | True | Nucleic acids
 | C03340 | False | 0 | False | --
 | C06010 | False | 0 | False | --
 | C00022 | False | 0 | False | --
 | C05125 | False | 0 | False | --
 | C00068 | False | 0 | False | --
 | C00158 | True | 11 | False | --
 | C00149 | False | 0 | False | --
 | C00036 | False | 0 | False | --
Module 4 | C00979 | False | 0 | False | --
 | C03492 | False | 0 | False | --
 | C04352 | False | 0 | False | --
 | C00097 | False | 0 | True | Peptides
 | C03125 | False | 0 | False | --
 | C01639 | False | 0 | False | --
 | C01077 | False | 0 | False | --
 | C02291 | False | 0 | False | --
 | C00283 | False | 0 | False | --
 | hs- | False | 0 | False | --
 | C00033 | False | 0 | True | Lipids
 | C00164 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C00042 | True | 0.6 | False | --
 | C00091 | False | 0 | False | --
 | C04272 | False | 0 | False | --
 | C02631 | False | 0 | False | --
 | C02504 | True | 4.3 | False | --
 | C00141 | False | 0 | False | --
 | C04411 | False | 0 | False | --
 | C00417 | False | 0 | False | --
 | C04546 | False | 0 | False | --
 | C00229 | False | 0 | False | --
 | apoACP | False | 0 | False | --
 | C00882 | False | 0 | False | --
 | C03561 | False | 0 | False | --
 | C06143 | False | 0 | False | --
 | C00010 | True | 0 | False | --
 | C00054 | False | 0 | False | --
 | C00163 | True | 0 | True | Lipids
 | C00877 | False | 0 | False | --
 | C00136 | False | 0 | False | --
 | C01144 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C00154 | False | 0 | False | --
 | C01944 | False | 0 | False | --
 | C01832 | False | 0 | False | --
 | C05274 | False | 0 | False | --
 | C02593 | False | 0 | False | --
 | C05270 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C01134 | False | 0 | False | --
 | C04079 | False | 0 | False | --
 | C00831 | False | 0 | False | --
 | C06006 | False | 0 | False | --
 | C00109 | False | 0 | False | --
 | C01234 | False | 0 | False | --
 | C00072 | False | 0 | True | Vitamins and cofactors
 | C01326 | False | 0 | False | --
 | C00425 | False | 0 | False | --
 | ethy | False | 0 | False | --
 | C01118 | False | 0 | False | --
 | C00441 | False | 0 | False | --
 | C00263 | True | 1.8 | True | Peptides
 | C01102 | False | 0 | False | --
 | C01419 | False | 0 | False | --
 | C00127 | True | 0.09 | False | --
 | C00051 | True | 3.5 | False | --
 | C00224 | False | 0 | False | --
 | C00059 | False | 0 | False | --
 | C00094 | False | 0 | False | --
 | C00430 | False | 0 | False | --
 | C00048 | True | 0 | False | --
 | C03508 | False | 0 | False | --
 | C00084 | False | 0 | False | --
 | C00188 | False | 0 | True | Peptides
 | C02992 | False | 0 | False | --
 | C01651 | False | 0 | False | --
 | C05519 | False | 0 | False | --
 | C00037 | True | 1.7 | True | Peptides
 | C01642 | False | 0 | False | --
 | C02412 | False | 0 | False | --
 | progly | False | 0 | False | --
Module 5 | C00099 | True | 2.4 | True | Peptides
 | C00966 | False | 0 | False | --
 | C00522 | False | 0 | False | --
 | C00864 | True | 0 | True | Vitamins and cofactors
 | C00415 | False | 0 | False | --
 | C00364 | True | 0.7 | True | Nucleic acids
 | C00363 | True | 1.6 | True | Nucleic acids
 | C00459 | True | 0 | True | Nucleic acids
 | C00143 | False | 0 | False | --
 | C00475 | True | 6.7 | True | Nucleic acids
 | C00269 | False | 0 | False | --
 | C00055 | True | 3.9 | True | Nucleic acids
 | C00463 | False | 0 | False | --
 | C00350 | False | 0 | True | Lipids
 | [NAME] | False | 0 | True | Lipids
 | C00065 | False | 0 | True | Peptides
 | C02553 | False | 0 | False | --
 | C01650 | False | 0 | False | --
 | C01652 | False | 0 | False | --
 | C03512 | False | 0 | False | --
 | C00078 | False | 0 | True | Peptides
Module 6 | C04677 | True | 1.1 | False | --
 | C04734 | False | 0 | False | --
 | C00063 | True | 1.4 | True | Nucleic acids
 | C00152 | False | 0 | True | Peptides
 | C00169 | False | 0 | False | --
 | C03373 | False | 0 | False | --
 | C04640 | False | 0 | False | --
 | C00064 | False | 0 | True | Peptides
 | C04666 | False | 0 | False | --
 | C00352 | True | 0 | False | --
 | C00108 | True | 3.1 | False | --
 | C03090 | False | 0 | False | --
 | C00906 | False | 0 | False | --
 | C03794 | True | 4.6 | False | --
 | C04494 | False | 0 | False | --
 | C00044 | True | 2.8 | True | Nucleic acids
 | C00035 | True | 3.3 | True | Nucleic acids
 | [NAME] | True | 12 | False | --
Module 7 | C04236 | False | 0 | False | --
 | C00671 | False | 0 | False | --
 | C00233 | False | 0 | False | --
 | C00026 | True | 8.9 | False | --
 | C06002 | False | 0 | False | --
 | C01179 | False | 0 | False | --
 | C00166 | False | 0 | False | --
 | C01250 | False | 0 | False | --
 | C01165 | False | 0 | False | --
 | C01267 | False | 0 | False | --
 | C06007 | False | 0 | False | --
 | C00311 | False | 0 | False | --
 | C00232 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C00197 | True | 27 | False | --
 | [NAME] | False | 0 | False | --
 | C01005 | False | 0 | False | --
 | C00251 | False | 0 | False | --
 | C00254 | False | 0 | False | --
 | C01269 | False | 0 | False | --
 | C03175 | True | 0 | False | --
 | C00493 | False | 0 | False | --
 | C04823 | False | 0 | False | --
 | C04751 | False | 0 | False | --
 | C03406 | True | 3.9 | True | Peptides
 | C03082 | False | 0 | False | --
 | C00402 | False | 0 | True | Peptides
 | C00049 | False | 0 | True | Peptides
 | [NAME] | False | 0 | False | --
 | C01638 | False | 0 | False | --
 | C00438 | True | 0 | False | --
 | C00337 | True | 0 | False | --
 | C00122 | True | 4.9 | False | --
 | C00327 | True | 1.4 | True | Peptides
 | C00179 | False | 0 | False | --
 | C01602 | False | 0 | False | --
 | C00134 | True | 58 | True | Peptides
 | C00062 | False | 0 | True | Peptides
 | C02163 | False | 0 | False | --
 | C01636 | False | 0 | False | --
 | C00086 | True | 2.5 | False | --
 | C03912 | False | 0 | False | --
 | C00763 | False | 0 | True | Peptides
 | C00148 | False | 0 | True | Peptides
 | C02702 | False | 0 | False | --
 | C01649 | False | 0 | False | --
 | C00437 | True | 0.7 | False | --
 | C00669 | False | 0 | False | --
 | C00666 | True | 1.1 | False | --
 | C00680 | False | 0 | False | --
 | C00047 | False | 0 | True | Peptides
 | C01931 | False | 0 | False | --
 | C01646 | False | 0 | False | --
 | C00993 | True | 3.1 | False | --
 | C04882 | False | 0 | False | --
 | C00692 | False | 0 | False | --
 | C04877 | False | 0 | False | --
 | C04421 | False | 0 | False | --
 | C04133 | False | 0 | False | --
 | C00624 | True | 1.9 | False | --
 | C00288 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C05100 | False | 0 | False | --
 | C00439 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C01100 | False | 0 | False | --
 | C03680 | False | 0 | False | --
 | C00860 | True | 0 | False | --
 | C00135 | False | 0 | True | Peptides
 | C02988 | False | 0 | False | --
 | C01643 | False | 0 | False | --
 | C00785 | True | 6.1 | False | --
 | C00857 | False | 0 | False | --
 | C00334 | True | 3.4 | True | Peptides
 | C03287 | False | 0 | False | --
 | C00217 | False | 0 | True | Peptides
 | C00025 | False | 0 | True | Peptides
 | C02987 | False | 0 | False | --
 | C01641 | False | 0 | False | --
 | C00407 | False | 0 | True | Peptides
 | C03127 | False | 0 | False | --
 | C01644 | False | 0 | False | --
 | C00123 | False | 0 | True | Peptides
 | C02047 | False | 0 | False | --
 | C01645 | False | 0 | False | --
 | C00826 | False | 0 | False | --
 | C00268 | False | 0 | False | --
 | [NAME] | False | 0 | True | Peptides
 | C03511 | False | 0 | False | --
 | C01648 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C00082 | False | 0 | True | Peptides
 | C00787 | False | 0 | False | --
 | C02839 | False | 0 | False | --
 | C00075 | True | 0.6 | True | Nucleic acids
 | [NAME] | False | 0 | False | --
 | C04896 | False | 0 | False | --
 | C04916 | False | 0 | False | --
 | C01653 | False | 0 | False | --
 | C02554 | False | 0 | False | --
 | C00183 | False | 0 | True | Peptides
Module 8 | C04442 | False | 0 | False | --
 | C00345 | True | 3.4 | False | --
 | C00236 | False | 0 | False | --
 | C03506 | False | 0 | False | --
 | C00118 | False | 0 | False | --
 | C00111 | True | 15 | False | --
 | C00279 | False | 0 | False | --
 | C00231 | False | 0 | False | --
 | C01236 | False | 0 | False | --
 | C00498 | False | 0 | False | --
 | C00182 | False | 0 | False | --
 | C00103 | True | 7 | False | --
 | C00092 | False | 0 | False | --
 | C00085 | True | 2.6 | False | --
 | C05382 | True | 4.2 | False | --
Module 9 | C01302 | False | 0 | False | --
 | C01304 | False | 0 | False | --
 | C01268 | False | 0 | False | --
 | C04454 | False | 0 | False | --
 | C04732 | False | 0 | False | --
 | [NAME] | False | 0 | False | --
 | C00061 | False | 0 | False | --
 | C00255 | False | 0 | True | Vitamins and cofactors
 | C15556 | False | 0 | False | --
 | C00058 | False | 0 | True | Lipids
 | C00199 | False | 0 | False | --
 | C00301 | True | 0 | False | --
 | C00117 | True | 8.1 | False | --
 | C00455 | False | 0 | False | --
 | C00153 | True | 2.9 | True | Vitamins and cofactors
 | C00442 | False | 0 | False | --
 | C03150 | False | 0 | False | --
 | C00121 | False | 0 | True | Carbohydrates
 | C00387 | True | 5.3 | True | Nucleic acids
 | C00144 | True | 2 | True | Nucleic acids
 | C00242 | True | 9.9 | True | Nucleic acids
 | C00262 | True | 1.7 | False | --
 | C00294 | True | 400 | False | --
 | C00130 | True | 0 | False | --
 | C05841 | False | 0 | False | --
 | C00253 | True | 0 | True | Vitamins and cofactors
 | C01185 | False | 0 | False | --
 | C03722 | False | 0 | False | --
 | C01762 | False | 0 | False | --
 | C04302 | False | 0 | False | --
 | C02741 | False | 0 | False | --
 | C02739 | False | 0 | False | --
 | C00119 | False | 0 | False | --
 | C00295 | True | 0 | False | --
 | C01103 | False | 0 | False | --
 | C00105 | True | 1.5 | True | Nucleic acids
 | C00015 | True | 2.4 | True | Nucleic acids
 | C00385 | False | 0 | False | --
 | C00655 | True | 2.5 | False | --
 | C00385 | False | 0 | False | --
 | C00655 | True | 2.5 | False | --