Fig. 6.
A schematic diagram showing the potential biogeochemical pathways mediated by various MAGs recovered from the Centrosaurus dinosaur fossil bone. The MAGs highlighted in red indicate their involvement in autotrophic CO2 fixation pathways and the dash lines refer to the steps where the key functional genes were not identified in the MAGs. Abbreviations: AlkB, alkane 1-monooxygenase; AmoA, ammonia monooxygenase; narG, membrane bound nitrate reductase; nirS, nitrite reductase; Nor, nitric oxide reductase; nosZ, nitrous oxide reductase; Sat, ATP sulfurylase; Apr, adenylyl-sulfate reductase; DsrAB, dissimilatory sulfite reductase subunit A and B; hmoA, heme-degrading monooxygenase; 3HP/4HB, 3-hydroxyproprionate/4-hydroxybutyrate pathway; TCA, tricarboxylic acid (TCA) cycle