@article{oai:osaka-aoyama.repo.nii.ac.jp:00000008, author = {石橋, 文秀 and 森藤, 昌樹 and 根来, 千晴 and 園田, 章 and 片山, あずさ and 武部, 靖}, journal = {大阪青山大学紀要, Journal of Osaka Aoyama University}, month = {Mar}, note = {40017377550, 5-chlorosulfonyl-2-oxobenzimidazole(1) was synthesized.  On adding 1 to the suspension of papain in acetonitrile containing formamide, 1 was introduced into the papain in a yield of 7%, suggesting that 1 modified papain chemically to give 2-oxobenzimidazolesulfonyl papain(OBI- papain).  Also, it was found in-terestingly that papain activity of OBI-papain was maintained and that SH group in the active center in the large cleft of papain was free.  Accordingly, It expects that OBI-papain might have other catalytic action except pa-pain activity. (accepted. Dec. 12, 2008)}, pages = {35--38}, title = {Studies on chemical modification of papain by 5-chlorosulfonyl-2-oxobenzimidazole as biotin model compound}, volume = {1}, year = {2009} }