Route biogeochemical / elemental cycling annotation for shotgun metagenomics and MAGs: carbon (C), nitrogen (N), sulfur (S), iron (Fe), phosphorus (P), hydrogen (H2/H), oxygen (O), methane (CH4), and other metals/metalloids (Mn, As, Se, …) via METABOLIC, MEBS, FeGenie, plus DRAM/KEGG/eggNOG backups.
