
Phylogenetic comparison of 10 thermophilic and 18 mesophilic S-domains. Base-paired nucleotides are connected by lines. The thermophilic S-domain sequences are from T. thermophilus, T. album, T. aquaticus, T. commune, T. luteus, T. tumescens, T. maritima, T. neapolitana, T. pallidum, and T. thioparus. The mesophilic S-domain sequences are from E. coli, S. typhimurium, N. gonnorhoeae, Synechococcus, V. cholera, C. vinosum, Anabaena, C. pneumoniae, H. pylori, M. luteus, C. trachomatis, Wolbachia, H. influenza, B. burgdorferi, Synechocystis, M. leprae, D. radiodurans, and M. tuberculosis.










