Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes
Figure 5
Minimum-evolution tree of β-carotene
ketolase, β-carotene hydroxylase, and hydrocarbon oxygenase homologs of
cyanobacteria and eukaryotic algae. About 220 positions spanning the three histidine-boxes
were employed. Colored branches indicate different groups of
proteins. Red: β-carotene hydroxylase, green: β-carotene ketolase, magenta:
hydrocarbon oxygenase. Sequences from 37 sequenced
cyanobacterial genomes are shown by their acronyms and accession numbers (locus tags). Other sequences are shown by their accession numbers, labels, and
strain names. Desaturase
genes that have been functionally characterized are indicated on
the tree by their labels. Bootstrap values from minimum-evolution
analyses are listed to the left of each node, with values more than 50 are
shown.