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水稻RAD21同源基因(OsRIX4)存在着多种mRNA选择性剪接模式,从中鉴定出一类特殊的剪接模式,即一个组成型外显子内部的部分片段可以被单独剪除,该类型不属于已知的5类剪接模式之一.这种剪接模式所产生的转录本能够独立地得到翻译.OsRIX4基因多转录本的表达各具组织特异性,其中OsRIX4-4和OsRIX4-5转录本的表达量与水稻育性呈正相关.这种剪接模式的发现,可以为理解和定义植物mRNA剪接模式提供新的内容,也凸显转录后mRNA加工和调控机制的复杂性.
There are a variety of mRNA alternative splicing patterns in rice RAD21 homologous gene (OsRIX4), from which a special splicing pattern has been identified, in which some of the internal segments of a constitutive exon can be excised independently, which is not known Of the five splicing patterns of one of the splicing mode generated transcripts can be independently translated OsRIX4 gene multiple transcripts of the expression of each tissue specific OsRIX4-4 and OsRIX4-5 transcript expression levels and The fertility of rice is positively correlated.The discovery of this splicing pattern can provide new contents for understanding and defining plant mRNA splicing patterns and highlighting the complexity of post-transcriptional mRNA processing and regulatory mechanisms.