... Y. ,Pejler,G.,Tchougonova,E.,Hellman,L.,Gutsenstein,M.,Hirasawa,N.,Sakurai,E.,Buzas,E.,Kovacs,P.,Casaba,Gy,Kittel ,A. ,Okada,M.,Hara,M.,Mai,L.,Numayama-Tsuruta,K.,Ishigaki-Suzuki,S.,Ohuchi,K.,Ichikawa ,A. ,Falus ,A. ,Watanabe, T. & Nagy, A. (2001) ... [21]. In fact, the catalytic steps after the first transaldimination are rate-limiting in the entire catalytic reaction of mammalian HDC [19].On the other hand, the crystal structure of DDC hasshown ... hypothesis, wehave characterized the protein conformational changesduringcatalysis,byusingastrategysimilartothatusedpreviously for the catalytic mechanism characterization[19]. Substrate analogs...