A Model Compound of Novel Cofactor Tryptophan ... Shinobu Itoh,**+ Masaki Ogino: Shigenobu Haranou: Tadashi Terasaka: Takeya Ando: Mitsuo Komatsu: Yoshiki Ohshiro: Shunichi Fukuzumi,*v+ Keqji Kano,' Kazuyoshi Takagi: and Tokuji Ikeda' ... Contribution from the Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565, Japan, and Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto ...