Echinobase Image ID: 192452

Figure 5. (A) The KEGG Orthology (KO) functional categories comprising the KEGG-Level-3 pathway of nitrogen metabolism (00910), including the direction of the reaction, were mapped. Inorganic nitrogen metabolism was mapped to show the substrate and product of each indicated reaction as it pertains to nitrate (NO3−) reduction, nitrite (NO2−) ammonification, denitrification to nitric oxide (NO), nitrous oxide (N2O), and nitrogen gas (N2), and nitrogen fixation into ammonia (NH3). (B) The KEGG Orthology (KO) functional categories comprising the KEGG-Level-3 pathway of nitrogen metabolism (00910), including the direction of the reaction, were mapped. The assimilation of ammonia into the amino acids glutamine and asparagine are also shown, including the subsequent enzyme-catalyzed amino acid transitions. The count data associated with the specified gene are shown as column bar graphs for each sample, including the KO category (KO number) and the gene name assigned through the KEGG database. Each category was color-coded according to their sample indicated in the color key as follows: SP.GD = purple sea urchin Strongylocentrotus purpuratus gut digesta; SP.GD1 = purple and SP.GD2 = light purple; LV.GD = green sea urchin Lytechinus variegatus gut digesta; LV.GD1 = green and LV.GD2 = light green. The metabolic pathways were elaborated using the information provided through KEGG Mapper as implemented in MG-RAST (v4.0.3). * The KEGG number K01953 corresponding to the asnB gene is listed multiple times due to its function in the generation of glutamate and asparagine from glutamine and aspartate. Image published in: Hakim JA et al. (2021) Image downloaded from an Open Access article in PubMed Central. © 2021 by the authors. Larger Image Printer Friendly View

Return to previous page