Figure 1.

Phylogenetic tree showing the relationships between haloarchaea with sequenced genomes. The sequences were aligned with the Ribosomal Database Project (RDP) aligner [3], which uses the Jukes-Cantor corrected distance model to construct a distance matrix based on alignment model positions without the use of alignment inserts, and uses a minimum comparable position of 200. The tree was generated with the Tree Builder from the RDP which uses Weighbor [4] with an alphabet size of 4 and length size of 1,000. The building of the tree also involves a bootstrapping process repeated 100 times to generate a majority consensus tree. Methanosarcina acetivorans was used as the outgroup.