Figure 4
From: Comparative metagenomics of hydrocarbon and methane seeps of the Gulf of Mexico

Relative proportion and taxonomic affiliation of specific genes in each normalized metagenome for selected metabolic processes. (a) Nitrate reduction (narG); (b) Nitrification (hao); (c) Nitrogen fixation (nifK); (d) Methanogenesis/anaerobic oxidation of methane (mcrA); (e) Sulfate reduction (dsrB); (f) Sulfide oxidation (SoxB); (g) Hydrocarbon degradation (bssA); (h) Hydrocarbon degradation (aliB); (i) Hydrocarbon degradation (bnsE); (j) sulfatase (aslA); (k) Glycan degradation (fuca).