Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 29, Problem 12P
Interpretation Introduction
Interpretation:
To determine the significance of two Mg2+ ions in RNA polymerase II active state.
Concept introduction:
DNA or Deoxyribonucleic acid is a molecule made of two chains which coil around one another. These form a double helix which carries instructions genetical in nature like related to reproduction, growth, development, functioning of the living organisms.
There are two Mg2+ ions that are present in the RNA polymerase II active state.
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RNA polymerase from E. coli (core enzyme alone) has all of the following properties except:
a)requires all four ribonucleoside triphosphates and a DNA template.
b)can extend an RNA chain and initiate a new chain.
c)recognizes specific start signals in DNA.
d)produces an RNA polymer that begins with a 5'-triphosphate.
e)is required for the synthesis of mRNA, rRNA, and tRNA in E. coli.
Illustrating the importance of triphosphate and monophosphate molecules, explain the process of RNA biosynthesis by RNA polymerase.
The three stages of transcription (initiation, elongation, and termination) – with a focus on how RNA Polymerase II (Pol II) relates to these stages. The final product of transcription
Chapter 29 Solutions
Biochemistry
Ch. 29 - Prob. 1PCh. 29 - The Events in Transcription Initiation Describe...Ch. 29 - Substrate Binding by RNA Polymerase RNA polymerase...Ch. 29 - Comparison of Prokaryotic and Eukaryotic...Ch. 29 - Prob. 5PCh. 29 - Prob. 6PCh. 29 - Prob. 7PCh. 29 - Alternative Splicing Possibilities Suppose exon 17...Ch. 29 - Prob. 9PCh. 29 - Prob. 10P
Ch. 29 - Post-transcriptional Modification of Eukaryotic...Ch. 29 - Prob. 12PCh. 29 - Prob. 13PCh. 29 - The Lariat Intermediate in RNA Splicing Draw the...Ch. 29 - Prob. 15PCh. 29 - Prob. 16PCh. 29 - Prob. 17PCh. 29 - Prob. 18PCh. 29 - Figure 29.15 highlights in red the DNA phosphate...Ch. 29 - Chromatin decompaction is a preliminary step in...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.Similar questions
- Comparing the Mechanisms of Action of EF-Tu/EF-Ts and DnaK/ GrpE (Integrates with Chapter 30.) In what ways are the mechanisms of action of EF-Tu/EF-Ts and Dna K/GrpE similar? What mechanist ic functions do the ribosome A-site and DnaJ have in common?arrow_forwardSubstrate Binding by RNA Polymerase RNA polymerase has t binding sites for ribonucleoside triphosphates: the initiation site and the elongation site. The initiation site has a greater Km for NTPs than the elongation site. Suggest what possible significance this fact might have for the control of transcription in cells.arrow_forwardBased on the "initial transcription by RNA polymerase proceeds through a DNA- scrunching mechanism" paper why this research is important? Point out what we knew before this research about the initial transcription.arrow_forward
- The two different types of obstacles that Pol II encounters during elongation, with a focus on the DNA-binding proteinsarrow_forwardThe overall structures of RNA polymerase and DNA polymerase are very different, yet their active sites show considerable similarities. What do the similarities suggest about the evolutionary relationship between these two important enzymes?arrow_forwardBacteria or Eukaryotes? Formation of a termination loop within the transcript Alternative splicing of transcripts Translation beginning before transcription is complete Cleavage following the AAUAAA signal Direct binding of RNA polymerase to promoterarrow_forward
- 88Sequential binding of RNA polymerase II-TFIIF complex, TFIIE, and TFIIH completes ___________________ formation. A.pre-initiation complexb.TF recognition elementc.pre-elongation complexD.TATA binding complex 89Which of the following is the GDP-GTP exchange protein?A.EF-Tub.none of the abovec.EF-TsD.EF-G 90RNA polymerase II has 14 subunits. Yesornoarrow_forwardIf the RNA polymerase II subunits are in the same family, why would they have such little similarity to each other? Which RPB proteins were most closely related to each other? Why?arrow_forwardDi- and trinucleotides are occasionally released from RNA polymerase at the very start of transcription, a process called abortive cycling. This process requires the restart of transcription. Suggest a plausible explanation for abortive cycling.arrow_forward
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