酶原激活时，致使酶分子构象发生改变的原因是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29023' and id < 2361922 and id<>'2361922' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29023' and id > 2361922 and id<>'2361922' order by id asc limit 5