作者weei (weei)
看板TransBioChem
标题[讨论] 有关mRNA的问题~~
时间Tue May 18 18:21:59 2010
Each eukaryotic mRNA, even after post-transcriptional modification, include
5' and 3' UTRs. Which are these?
A)the cap and tail at each end of the mRNA
B)the untranslate regions at either end of the coding sequence
C)the U attachment sites for the tRNAs
D)the U translation sites that signal the beginning of translation
E)the U-A pairs that are found in high frequency at the ends
ans:B
其实我有一点不懂这题在讲啥
A是错在哪里???
还有mRNA的UTR也是从DNA转录过来的吗???
转录是只转录 coding region 有包含UTR吗??
麻烦各位了!!
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 61.229.225.6
1F：推 ellenroy:UTR是cap跟真正的转译起始点中间的小片段 不会转译 05/18 18:55
2F：→ ellenroy:然後UTR的数量多寡会影响蛋白表现的强度 05/18 18:56
3F：→ ellenroy:大致上是这样 还要更详细的话我再去翻课本XDDD" 05/18 18:57
4F：→ weei:那A是错在哪里?? 所以UTR是另外加上去的，不是从DNA转录过来? 05/19 21:54
5F：推 ellenroy:cap跟tail是转录後加工才加上去的 UTR是DNA转录来的没错 05/19 22:21
6F：→ weei:了解了~~感谢^^ 05/20 14:50