... FEBS Protein expressed by the ho2 gene of the cyanobacterium Synechocystis sp. PCC 6803 is a true heme oxygenase Properties of the heme and enzyme complexXuhong Zhang1, Catharina T. Migita2, ... Sato3, Masanao Sasahara1and Tadashi Yoshida11 Department of Biochemistry, Yamagata University School of Medicine, Japan2 Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi ... phytochrome-chromophore biosynthesis, encodes a protein related to heme oxygenases. Proc Natl Acad Sci USA 96, 6541–6546.24 Kaneko T, Tanaka A, Sato S, Kotani H, Sazuka T,Miyajima N, Sugiura M & Tabata S (1996)...