Fig. 4From: Methanogenic biodegradation of C9 to C12n-alkanes initiated by Smithella via fumarate addition mechanismPhylogenetic tree of alkylsuccinate synthase alpha-subunit (assA) amino acid sequences obtained from alkane-amended enrichment cultures. The topology of the tree was obtained using the neighbor-joining method and performing 1000 bootstrap replicates (values below 75% are not shown)Back to article page