... the axial heme ligand in ratheme oxygenase -1. Arch Biochem Biophys 317 , 253–258. 21 Chu GC, Katakura K, Tomita T, Zhang X, Sun D,Sato M, Sasahara M, Kayama T, Ikeda-Saito M &Yoshida T ... NatlAcad Sci USA 84, 89 61 8965.39 Hase T, Mizutani S & Mukohata Y (19 91) Expressionof maize ferredoxin cDNA in Escherichia coli. PlantPhysiol 97, 14 95 14 01. 40 Onda Y, Matsumura T, Kimara-Ariga ... Yamagata 990-9585, JapanFax: + 81 23 6285225Tel: + 81 23 6285222E-mail: tyoshida@med.id.yamagata-u.ac.jp(Received 9 August 2006, revised 1 October2006, accepted 9 October 2006)doi :10 .11 11/ j .17 42-4658.2006.055 31. xHeme...