期刊
ANALYTICAL BIOCHEMISTRY
卷 315, 期 2, 页码 202-207出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0003-2697(03)00028-9
关键词
BSA; clenbuterol; electron paramagnetic resonance; thiol spin labeling
The only free thiol group of bovine serum albumin (BSA) was coupled in a high yield with some novel thiol-reactive clenbuterol analogues. The unreacted cysteines were probed with maleimide spin label to determine the yield of the coupling reaction. A novel approach to determining free thiol groups of BSA quantitatively by electron paramagnetic resonance spectroscopy and spectral decomposition without the usual gel-filtration step or extensive dialysis is presented. (C) 2003 Elsevier Science (USA). All rights reserved.
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