在非标准配对中以GU为主而且集中在两个连续双螺旋的缺口处，又发现在第10、27、49位G居多现象，其意义有待阐明。
Among the non-standard base-pairing , the overwhelming majority is GU and it is concentrated in the region of gaps of two continuous double helixes and G is preferred to dominance at 10,27,49 sites .
连续缺口