Figure 6.

Phylogenetic neighbor-joining trees of the haloarchaeal TBP (A) and TFB (B) protein sequences, with the Pyrococcus woesei TBP or TFB sequence used as an outgroup. Asterisks indicate genes that have been knocked out in NRC-1. TBP or TFB genes from Halobacterium sp. NRC-1 (pink), Haloarcula marismortui (blue), Haloferax volcanii (red), Haloquadratum walsbyi (green), Natronomonas pharaonis (brown), and Pyrococcus woesei (black) are shown.