查询词典 Pirna

The lack of a dependence on Dicer (16, 19) and the profound strand asymmetry of mammalian pachytene clusters indicate that piRNAs are not generated from dsRNA precursors.

失去了对帽子结构的依赖和哺乳动物粗线期集合不对称的链表明了piRNA不是从dsRNA的初期形式转化来的。

Primary transcripts of piRNAs are generated from the transposon regulatory regions of heterochromatin.

在piRNA两条链中的10nt的重叠促使了Piwi蛋白在piRNA的生物发生中起作用的假说。

These share the molecular characteristics of pachytene piRNAs but originate from a differentset of clusters that more closely match those of Drosophila and zebrafish in repeat content.

它们都共享着粗线期 piRNA的分子特征，但是起源于那些更接近于果蝇和斑马鱼重复内容的一系列不同的群体。

Different from the siRNAs or miRNAs, which are derived from double-stranded or short-hairpin RNA precursors, piRNAs are derived from single-stranded RNA precursors or two non-overlapping and divergently transcribed precursors without the involvement of Dicer endonucleases.

与来自于双链RNA的siRNA和发卡结构miRNA不同之处是piRNA来自长单链RNA前体，或者是两股非重叠的反向转录前体，其生成与Dicer无关。

The presence of transposable elements per se is not sufficient for piRNA production.

每se转座因子存在对piRNA复制都是不够的。

PiRNAs may be sampled virtually from any position within a cluster with the only preference being a 5′ uridine residue.

实际上，piRNA可能由仅仅带有优先形成5′尿苷末端的群体中任意位置抽取。

I use an example quoted by Hu Jiaqi:"It is reported that America separates the DNA of a kind of virus by making use of genetic technology and combines it with another kind of DNA. Finally, they get a kind of virulent biological agent called a "pyrotoxin". Someone discloses in private that 20 grams of such a kind of biological agent could result in the global death of 6 billion people due to infection."

我在这里例举胡家奇所引用过的例子："据报道，美国利用转基因技术，将一种病毒的DNA分离出来，与另外一种DNA进行结合，拼结成一种剧毒的"热毒素"生物战剂，且私下有人透露，这种生物战剂只需20克，就可以导致全球60亿人全部感染死亡。"

Waiting, for the queers and the coons and the Reds and the Jews.

等待着疯子和黑人还有红色共产主义者还有犹太人