Comparison of the putative bifurcating hydrogenase gene clusters of Th. phaeum with Acetobacterium woodii and Thermotoga maritima. Linear comparison of the bifurcating hydrogenase gene loci from A. woodii and T. maritima with Th. phaeum was perfomed with tBlastx using easyfig . The lines indicate sequence identity ranging from 27% light grey to 100% dark grey. It shows that nuoG, nuoF5, Fd (ferredoxin-like) und nuoE4 are similar to the bifurcating hydrogenases of T. maritima and A. woodii. For each gene, several paralogue genes are found in the Th. phaeum genome; two further gene clusters are likely containing putative hydA, hydB and hydC genes (Tph_c14870-Tph_c14890 and Tph_c08240-Tph_c08260).