Describe the role of RNA polymerase in the transcription process. How does DNA polymerase find the correct place to begin polymerizing a new strand of DNA? How does the transcription of DNA to RNA work? Explain the role of RNA polymerase in transcription. Why does RNA polymerase always bui...
What is mRNA? (messenger RNA) Distinguish DNA from RNA, what is the same, what is different? Importance in function? What are the differences between RNA polymerase and primase? How does the transcription of DNA to RNA work? Describe the structure of RNA. RNA types: mRNA, rRNA, tRNA. Ho...
In a eukaryote, DNA never leaves the nucleus, so its information must be copied. This copying process is calledtranscriptionand the copy is mRNA. Transcription takes place in the cytoplasm (prokaryote) or in the nucleus (eukaryote). The transcription is performed by an enzyme called RNA polymer...
After capping, and as RNA polymerase II continues to transcribe the gene, RNA splicing begins. In this process, the introns are removed from the newly synthesized RNA and the exons are stitched together. B. Each transcript ultimately receives a poly-A tail; in many cases, this happens after...
Researchers at Ludwig-Maximilians-Universitaet in Munich, led by Professor Patrick Cramer, have now discovered how the crucial first steps in RNA synthesis are executed -- and gene transcription is initiated.Luise Dirscherl
How does the RNA polymerase know where to stop? The DNA sequence that determines whether RNA polymerase binds the promoter is called what? How does RNA polymerase choose its DNA strand to transcribe? Explain how you think a polymerase might have come into existence. Then...
Directed evolution of novel polymerase activities: mutation of a DNA polymerase into an efficient RNA polymerase. Proc. Natl Acad. Sci. USA 99, 6597–6602 (2002). Article CAS PubMed PubMed Central Google Scholar Chen, T. et al. Evolution of thermophilic DNA polymerases for the recognition ...
The 5 eukaryotic RNA polymerases differ in structure and function. RNA polymerase I is located in the nucleolus, a specialized nuclear substructure in the cell. RNAP I synthesizes almost all ribosomal RNAs (rRNA) transcripts. These transcripts are directly involved in the production of ribosomes...
The RNA protected by these dimers was found to be derived from two distinct regions of the genomic RNA, one from the RNA polymerase gene around the leaky termination codon and the other corresponding to the coat protein gene (Wei et al., 1990). While these studies did not arise directly ...
In the absence of lactose, the LacI protein binds to the promoter of the lac operon, preventing RNA polymerase (RNAP) from binding. This means that the rest of the lac operon (lacZ, lacY, and lacA) can’t be expressed. Because lactose is not metabolized as easily as glucose, the ...