终止作用可能是16S rRNA与mRNA相互作用或者与释放因子相互作用来实现的。 有利的证据证明rRNA在核糖体亚单位的缔合中起作用,它不仅在核糖体的译码位点上(A或P位点,图6.34b)定位tRNA,而且还催化肽键的形成。负载的tRNA进入核糖体,通过密码子与反密码子碱基配对识别正确的密码,但是他们通过tRNA茎环结构的反密码子与16S...
反密码子(anticodon):指tRNA反密码子环中的三个核苷酸的序列,在蛋白质合成过程中通过碱基配对,识别并结合到mRNA的特殊密码上。相关知识点: 试题来源: 解析关于核糖体的移位,叙述正确的是( ③ )。 ①空载tRNA的脱落发生在“A”位上 ②核糖体沿mRNA的3’→5’方向相对移动 ③核糖体沿mRNA的5’→3’方向相对...
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It consists of anticodons. The major type of RNA, mRNA tRNA rRNA plays a significant role in the synthesis of proteins. mRNA is the one that initiates the protein synthesis and it is followed by tRNA and rRNA where the tRNA helps to bring the specific amino acid and the rRNA plays an ...
So the flow of tRNA is into the A site, through the P site, and out through the E site. Figure 6.6 compares the movement of tRNA and mRNA, which may be thought of as a sort of ratchet in which the reaction is driven by the codon-anticodon interaction. (We consider this concept in...
anticodon, a string of three key bases on the tRNA, match with three bases on the mRNA message called the codon. That is only the first function of tRNA, as each molecule also carries with it an amino acid which matches the mRNA codon. The ribosome functions to polymerize the amino ...
The relative lifetime of these pauses depends of the tRNA pool used. Finally, it appears that translation accuracy also depends on the balanced tRNA population. We propose to explain these different effects by using a codon-anticodon recognition model, called trial and error system based on a ...
百度试题 结果1 题目反密码子(anticodon) tRNA分子中,用于识别mRNA上密码子的核苷酸三联体相关知识点: 试题来源: 解析 P位点;A位点 反馈 收藏
In each elongation cycle, an eEF1A-GTP-aminoacyl (aa)-tRNA ternary complex binds the ribosome, with the anticodon loop of the tRNA in contact with the mRNA codon at the A site. Recognition of the codon triggers GTP hydrolysis and the dissociation of eEF1A-GDP. Peptide bond formation lead...
Ribonucleic acid (RNA) is a chemical compound that exists within cells and viruses. In cells, it can be divided into three categories: Ribosomal (rRNA), Messenger (mRNA) and Transfer (tRNA).