首页> 外文期刊>Molecular and Cellular Biology >A novel RNA in which the 5' end is generated by cleavage at the poly(A) site of immunoglobulin heavy-chain secreted mRNA.
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A novel RNA in which the 5' end is generated by cleavage at the poly(A) site of immunoglobulin heavy-chain secreted mRNA.

机译:一种新的RNA,其中5'端通过在免疫球蛋白重链分泌的mRNA的poly(A)位点切割而产生。

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摘要

We describe processed RNA species generated by cleavage at poly(A) sites in the immunoglobulin mu and gamma 2b heavy-chain transcription units. These "amputated transcripts" began at the first or "secreted" poly(A) site and ended at the second or "membrane" poly(A) site. Although they were polyadenylated and apparently spliced, they were largely restricted to the nucleus. Their existence confirms that the heavy-chain mRNAs are derived from RNA cleavage at alternative poly(A) sites.
机译:我们描述了在免疫球蛋白mu和gamma 2b重链转录单位中的poly(A)切割位点产生的已加工RNA种类。这些“截断的转录本”始于第一个或“分泌的” poly(A)位点,结束于第二个或“膜” poly(A)位点。尽管它们被聚腺苷酸化并且显然是剪接的,但是它们在很大程度上限于核。它们的存在证实了重链mRNAs是从RNA切割的poly(A)位点衍生而来的。

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