Figure 2From: Isolation of xylose isomerases by sequence- and function-based screening from a soil metagenomic libraryNeighbour-joining tree showing the phylogenetic positions of xym1 - and xym2 -encoded XIs based on conserved amino acids of different XIs. Microorganism sources of XIs were chosen based on sequence similarity and/or active expression in Saccharomyces cerevisiae. The phylogenetic tree was constructed with MEGA software using an unweighted group method with arithmetic mean (UPGMA) bootstrapped with 6,000 interactions.Back to article page