Pro很少出现在蛋白质《-螺旋结构中，原因是该氨基酸（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id < 2171197 and id<>'2171197' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id > 2171197 and id<>'2171197' order by id asc limit 5