Describe the roles of RNA polymerases, general transcription factors and regulatory proteins in eukaryotic transcription.
Describe the roles of RNA polymerases, general transcription
factors and regulatory proteins in eukaryotic transcription.
Homework Answers
There are three types of RNA polymerases in eukaryotes-
pol I- forms only the large ribosomal RNA subunit precursors.
polI- Forms all prem RNAs, some mall nuclear RNAs, most small nuclear RNAs which are used in RNA processing.
polII- Forms t RNAs, 5S RNA, U6 sn RNA, 7 SL RNA, and other small functional RNAs.
RNA polymerase has different subunits that have the following functions-
General transcription factors (GTFs) that bind to specific sites (promoter) on DNA to activate transcription of genetic information from DNA to messenger RNA. GTFs, RNA polymerase, and the mediator (a multi-protein complex) constitute the basic transcriptional apparatus that first bind to the promoter, then start transcription. s a class of protein, general transcription factors bind to promoters along the DNA sequence or form a large transcription preinitiation complex to activate transcription. General transcription factors are necessary for transcription to occur.
Add Answer to:
Describe the roles of RNA polymerases, general
transcription
factors and regulatory proteins in eukaryotic
transcription.
Which one of the following is the main reason that a typical eukaryotic gene is able...
Which one of the following is the main reason that a typical eukaryotic gene is able to respond to a far greater variety of regulatory signals than a typical prokaryotic gene or operon? A. Eukaryotes have three types of RNA polymerase. B. Eukaryotic RNA polymerases require general transcription factors. C. The transcription of a eukaryotic gene can be influenced by proteins that bind far from the promoter. D. Prokaryotic genes are packaged into nucleosomes.
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms?...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Describe the general strategies adopted for initaion of transcription in eukaryotes. In your answer consider the...
Describe the general strategies adopted for initaion of transcription in eukaryotes. In your answer consider the roles and initiation requirements of the three eukaryote RNA polymerases; pol I, pol II and pol III
Q3. Write different types of RNA polymerases and their corresponding functions in the eukaryotic cell. List...
Q3. Write different types of RNA polymerases and their corresponding functions in the eukaryotic cell. List three differences between RNA polymerase II and Poly (A) polymerase. What are the roles of Poly A tail in the mature mRNAs?
Classify each statement according to whether it applies to general transcription factors only, specific transcription factors...
Classify each statement according to whether it applies to general transcription factors only, specific transcription factors only, both, or neither These transcription factors are found in both prokaryotes and eukaryotes. These transcription factors are proteins. These transcription factors form part of the transcription complex. One of these transcription factors binds directly to the TATA box in the core promoter. These transcription factors bind to the operator. These transcription factors bind to enhancer sequences that may be distant from the promoter....
Which of the following statements about eukaryotic activator proteins is false? Choose one: A. They stimulate...
Which of the following statements about eukaryotic activator proteins is false? Choose one: A. They stimulate transcriptional initiation by opening up the double helix. * B. They stimulate transcription initiation by recruiting proteins that modify chromatin structure. C. They stimulate transcription initiation by aiding in the assembly of general transcription factors and RNA polymerase at the promoter. D. They stimulate transcription initiation by promoting the assembly of a transcription initiation complex at the promoter.
Which of the following is NOT a function of transcription that requires the activity from subunits...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
on and 6. Draw the same Eukaryotic transcript after splicing has removed the m label the...
on and 6. Draw the same Eukaryotic transcript after splicing has removed the m label the remaining parts. 7. Describe the roles of the following features involved in Eukaryotic transcription: TATA Binding Protein General Transcription Factors Polymerase II 8. In Eukaryotic transcription, which happens first? A. The General Transcription Factors are recruited, and the Preinitiation complex (PIC) is assembled. B. The TBP binds the promoter 9. Describe the carboxy terminal domain (CTD) of RNA polymerase II and two of its...
what are the other answers if any of the following key differences between prokaryotic and eukaryotic...
what are the other answers if any
of the following key differences between prokaryotic and eukaryotic transcription are TRUE? Check all that apply prokaryotic transcription occurs in the cytoplasm, while eukaryotic transcription occurs in the nucleus eukaryotic transcription is carried out by 1 RNA polymerase, while prokaryotic transcription is carried out by 3 different RNA polymerases eukaryotic transcripts are processed, while prokaryotic transcripts are translated while transcription is still occurring prokaryotes have sigma factors for specificity of binding whereas eukaryotes...
Can someone please help me answer these questions. Thank you! Eukaryotic transcription signals a) This drawing shows the placements of the four main sequences of the eukaryotic core promoter for RNA...
Can someone please help me answer these questions. Thank
you!
Eukaryotic transcription signals
a) This drawing shows the placements of the four main sequences of
the eukaryotic core promoter for RNA polymerase II. Identify each
one and give a brief explanation
b) Which sequences are used in a DPE-driven promoter?
c) Which ones are used in a TATA-driven promoter?
d) Please draw and describe the steps as the transcription factors
work with eukaryotic RNA polymerase II to start transcription of...
Which one of the following is the main reason that a typical eukaryotic gene is able to respond to a far greater variety of regulatory signals than a typical prokaryotic gene or operon? A. Eukaryotes have three types of RNA polymerase. B. Eukaryotic RNA polymerases require general transcription factors. C. The transcription of a eukaryotic gene can be influenced by proteins that bind far from the promoter. D. Prokaryotic genes are packaged into nucleosomes.
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Classify each statement according to whether it applies to general transcription factors only, specific transcription factors only, both, or neither These transcription factors are found in both prokaryotes and eukaryotes. These transcription factors are proteins. These transcription factors form part of the transcription complex. One of these transcription factors binds directly to the TATA box in the core promoter. These transcription factors bind to the operator. These transcription factors bind to enhancer sequences that may be distant from the promoter....
Which of the following statements about eukaryotic activator proteins is false? Choose one: A. They stimulate transcriptional initiation by opening up the double helix. * B. They stimulate transcription initiation by recruiting proteins that modify chromatin structure. C. They stimulate transcription initiation by aiding in the assembly of general transcription factors and RNA polymerase at the promoter. D. They stimulate transcription initiation by promoting the assembly of a transcription initiation complex at the promoter.
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
on and 6. Draw the same Eukaryotic transcript after splicing has removed the m label the remaining parts. 7. Describe the roles of the following features involved in Eukaryotic transcription: TATA Binding Protein General Transcription Factors Polymerase II 8. In Eukaryotic transcription, which happens first? A. The General Transcription Factors are recruited, and the Preinitiation complex (PIC) is assembled. B. The TBP binds the promoter 9. Describe the carboxy terminal domain (CTD) of RNA polymerase II and two of its...
what are the other answers if any
of the following key differences between prokaryotic and eukaryotic transcription are TRUE? Check all that apply prokaryotic transcription occurs in the cytoplasm, while eukaryotic transcription occurs in the nucleus eukaryotic transcription is carried out by 1 RNA polymerase, while prokaryotic transcription is carried out by 3 different RNA polymerases eukaryotic transcripts are processed, while prokaryotic transcripts are translated while transcription is still occurring prokaryotes have sigma factors for specificity of binding whereas eukaryotes...
Can someone please help me answer these questions. Thank
you!
Eukaryotic transcription signals
a) This drawing shows the placements of the four main sequences of
the eukaryotic core promoter for RNA polymerase II. Identify each
one and give a brief explanation
b) Which sequences are used in a DPE-driven promoter?
c) Which ones are used in a TATA-driven promoter?
d) Please draw and describe the steps as the transcription factors
work with eukaryotic RNA polymerase II to start transcription of...
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