转录过程(蛋白质合成第一步)Transcription 2.7.U4 Transcription is the synthesis of mRNA copied from the DNA base sequences by RNA polymerase. 2.7.U6 The amino acid sequence of polypeptides is determined by mRNA accord
▲【5】In prokaryotes (bacteria), transcription occurs in the cytoplasm. Translation of the mRNA into proteins also occurs in the cytoplasm. In eukaryotes, transcription occurs in the cell's nucleus. mRNA then moves to the cytoplasm ...
转录(Transcription)是遗传信息由DNA转换到RNA的过程。转录是信使RNA(mRNA)以及非编码RNA(tRNA、rRNA等)的合成步骤。转录中,一个基因会被读取、复制为mRNA;这个过程由RNA聚合酶(RNA polymerase)和转录因子(transcription factor)所共同完成。 编辑 主条目:RNA编辑 RNA编辑(RNA editing)是指在RNA水平上的改变遗传信息的...
Translation Shortly after mRNA is transcribed, translation begins. The sequence of bases in mRNA serves as instructions for the order in which amino acids should be joined Translation Translation: The decoding of an mRNA message and creation of a polypeptide chain (protein) RIBOSOMES are the factor...
In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription. During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of...
Use the polypeptide below to construct the mRNA strand as well as the original DNA code. Peptide: MET-LYS-AGR-PHE-GLY-PRO-STOP mRNA: Template: Describe the function of RNA in the transcription and translation of a gene that encodes a protein. ...
The cellular location of transcription, RNA processing, and translation. DNA is located in the nucleus and therefore transcription occurs in the nucleus. The precursor mRNA also undergoes RNA processing before departing the nucleus through a nuclear pore. In the cytosol, a ribosome binds to the ...
In this lesson, you'll learn about the roles of DNA, mRNA, tRNA, and ribosomes in protein formation. We'll provide an overview of the processes of transcription and translation in protein formation. The Journey from Gene to Protein It's commonly known that DNA is 'the building block of...
sequence into mRNA: sequence into mRNA: TAC AGT CCA GCG ATA ATT TAC AGT CCA GCG ATA ATT AUG AUG UCA UCA GGU GGU CGC CGC UAU UAU UAA UAA TRANSCRIPTION & TRANSLATION: From DNA to Protein Chapter 11, Section 2 Think back to the information contained in your Think back to the informatio...
Initiation: Transcription begins at a promoter: a specific region of a gene. RNA polymerase binds to the promoter. This signals the DNA to unwind. The enzyme is now ready to make mRNA Elongation: Nucleotides are added to the mRNA strand Remember: thymine only occurs in DNA, and uracil onl...