DNA的5端,3端英文怎么说?
职业资格认证培训经常在文献里看到,也再熟悉不过的 5' / 3' 末端,知道英文怎么发音吗?复韵母都有什么
5' 的发音是"five primenoticed"
来看一下“维基百科”(Wikipedia)的解释吧。
sabas5′ end
sme>torayThe 5′ (pronounced "five prime四级成绩查询网址>百度英语翻译") end is named as the strand terminates at the chemical group attached to the fifth carbon in the sugar-ring. If a phosphate group is attached to the 5′ end, ligation of two nucleotides can occur, via a phosphodiester bond from the 5′-phosphate to the 3′-hydroxyl group of another nucleotide. If it is removed no ligation can occur. Molecular biologists can u this phenomenon to their advantage by removing the 5′-phosphate with a phosphataspot to prevent any unwanted nucleic acid ligation.
The 5′ end is the site at which post-translational capping occurs, a process which is vital to
producing mature mesnger RNA. Capping ensures the stability of the mesnger RNA while it undergoes translation, providing resistance to the degradive effects of exonucleas. It consists of a methylated nucleotide (methylguanosine) attached the mesnger RNA in a rare 5′ to 5′ triphosphate linkage..
The 5' flankingzooskoolstray八狗一女 region is a region of DNA which is NOT transcribed into RNA, but rather is adjacent to 5' end of the gene. The 5'-flanking region contains the promoter, and may also contain enhancers or other protein binding sites.
The 5' untranslated region is a region of a gene which IS transcribed into mRNA, becoming the 5' end of the message, but which does not contain protein coding quence. The 5'-untranslated region is the portion of the DNA starting from the cap site and extending to the ba just before the ATG translation initiation codon. While not itlf translated, this region may have quences which alter the translation efficiency of the mRNA, or which affect the stability of the mRNA.