下列氨基酸中（ ）含有巯基。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25861' and id < 2171273 and id<>'2171273' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25861' and id > 2171273 and id<>'2171273' order by id asc limit 5