Fig. 3.

The neighbor-joining tree shows the relationship of PtHSP60 with other known HSP60s. Alignment of amino acid sequences are produced by Clustal W, and the bootstrap neighbor-joining phylogeny tree was constructed by MEGA 3.1 (bootstrap = 1,000). The species and accession numbers are the same as shown in Fig. 2. Branch lengths are proportional to estimates of evolutionary change. The number associated with each internal branch is the local bootstrap probability, which is an indicator of confidence