聚腺苷酸尾 的英文怎麼說
中文拼音 [jùxiànsuānwěi]
聚腺苷酸尾
英文
poly tail-
It has been known that polyadenylation of 3 " end of mrna in prokaryotes is different from that of eukaryotes. the poly ( a ) tracts in bacteria are generally short, ranging from 15 - 60 adenylates residues and associated with only 2 - 60 % of the molecule of a given mrna species. mrna polyadenylation of eukaryotes always occurs in the untranslated region, 10 - 30 nucleotides downstream of the hexanucleotide sequence aauaaa
現在普遍認為細菌許多mrna3 』端存在多聚腺苷酸尾，但其長度通常較短，大約在15 - 60腺苷酸殘基范圍，且對某一mrna而言，僅有2 - 60的分子被多聚腺苷酸化。The tk gene contained an open reading frame of 957 bp encoding a 318 aa protein. upstream of the tk orf, three putative gc boxes are located at positions - 22, - 166 and - 199. a potential poly a signal begins 110 nucleotides downstream from the termination codon at position 1306
在tkorf上游- 22 、 - 166 、 - 199位存在3個gc框樣序列，在終止密碼子下游第110個核苷酸處的1306位存在有多聚腺苷加尾信號。
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