Department of Biological Science and Biotechnology;
Tsinghua University;
Beijing 100084;
PRC;
Permanent address:Integrated Program in CMBS;
College of Physicians and Surgeons of Columbia University;
New York;
USA;
Permanent address:Department of Biochemstry and Molecular Biophysics;
Columbia University;
New York;
USA;
creatine; klnase; oxidized; form; disulfide; bond; thiol; group;