Figure 4From: The genome of the square archaeon Haloquadratum walsbyi : life at the limits of water activityPhylogenetic tree showing the position of the three β-carotene 15,15' mono-oxygenase homologs HQ2020A, HQ2381A, HQ3007A of H. walsbyi. Trees were constructed with the neighbor-joining method using 1000 bootstrap replicates.Back to article page