... single amino acid substitution, Leu130Ile,might be involved in an evolutionally critical change in thethermal stabilities of vertebrate DNases I. AmphibianDNasesIhaveaSer205insertioninaCa2+-binding ... Takeshita1,*, Toshihiro Yasuda2,*, Tamiko Nakajima1, Kouichi Mogi1, Yasushi Kaneko1,Reiko Iida3and Koichiro Kishi11Department of Legal Medicine, Gunma University School of Medicine, ... [14]. Fish DNase I alsoexhibited similar low thermal stability relative to amphi-bian DNases I (K. Mogi, H. Takeshita, T. Yasuda,T. Nakajima, E. Nakazato, Y. Kaneko, M. Itoi &K. Kishi, personal...