Fig. 4From: Unraveling the microbiome of a thermophilic biogas plant by metagenome and metatranscriptome analysis complemented by characterization of bacterial and archaeal isolatesClassification of biogas fermenter metagenome sequences according to Clusters of Orthologous Groups of proteins (COG). Each line represents the respective category as labeled at the outside. Numbers indicate the counts of metagenome sequences assigned to the corresponding COG categoryBack to article page