Enhancers are Select one: 1- regulatory DNA sequences. 2- regulatory proteins.
Enhancers are
Select one:
1- regulatory DNA sequences.
2- regulatory proteins.
Homework Answers
Answer: 1 - regulatory DNA sequences.
Enhancers are the regulatory DNA sequences that play a key role in transcription.
Enhancers are short regions of DNA which can be bound by specific regulatory proteins called transcription factors. They are present both in prokaryotes and eukaryotes.
Binding of transcription factors to enhancers will enhance the transcription of associated gene.
Enhancers are located about 1Mbp away from the associated gene. They are present either upstream or downstream of the start site.
The enhncers act on the genes that are present in the same DNA molecule.
Add Answer to:
Enhancers are
Select one:
1- regulatory DNA sequences.
2- regulatory proteins.
What are transcription factors? regulatory DNA sequences that bind to the promoter region of a gene...
What are transcription factors? regulatory DNA sequences that bind to the promoter region of a gene regulatory DNA sequences that bind to a protein regulatory motifs that bind to the promoter region of a gene regulatory proteins that bind to specific DNA sequences
How do enhancers differ from promoters as cis-acting regulatory sequences in eukaryotes?
How do enhancers differ from promoters as cis-acting regulatory sequences in eukaryotes?
Transcriptional regulation in bacteria involves a combination of regulatory proteins, DNA sequences, and small effector molecules....
Transcriptional regulation in bacteria involves a combination of regulatory proteins, DNA sequences, and small effector molecules. Note the list of terms below: Activator +1 Inhibitor -10 Allolactose cAMP CAP Operator lacA Repressor lacZ Inducer a.Which of the terms describes or is an example of a regulatory protein? b.Which of the terms describes or is an example of a small effector molecule? c.Which of the terms describes of is an example of a sequence found within the DNA? d.Which of the...
Nucleosome positioning along the DNA can influence where transcriptional regulatory proteins are able to bind DNA....
Nucleosome positioning along the DNA can influence where transcriptional regulatory proteins are able to bind DNA. If a nucleosome is bound to an enhancer sequence, it may outcompete a regulatory protein from binding the same sequence. Conversely, if an enhancer sequence is in the linker DNA where the nucleosome is absent, the regulatory protein does not have to compete with the nucleosome. The position of the nucleosome can alter the accessibility of a sequence of DNA to DNA binding proteins....
For the enhanceosome, binding sequences are on both strands of DNA. Why? The proteins of the...
For the enhanceosome, binding sequences are on both strands of DNA. Why? The proteins of the enhanceosome on one strand have a regulatory function, whereas those on the other strand bend the DNA strand. The proteins on one side of the strand bind to GC rich regions and those on the other strand bind to AT rich regions. The proteins of the enhanceosome completely enclose the double helix and straightened the double helix. The proteins on one strand clear the...
What are “cis-regulatory elements,” “trans-regulatory factors,” “exons,” “introns,” “untranslated regions,” “proximal promoters,” “enhancers,” “repressors,” "activators,” “caps,”...
What are “cis-regulatory elements,” “trans-regulatory factors,” “exons,” “introns,” “untranslated regions,” “proximal promoters,” “enhancers,” “repressors,” "activators,” “caps,” and “poly-A tails”? Which are protein coding sequence (or are actual proteins); which are not? Which make it into mature mRNA?
You are studying the regulatory DNA of a mouse gene expressed in developing heart, liver, and...
You are studying the regulatory DNA of a mouse gene expressed in developing heart, liver, and lung tissue. Your preliminary work has shown that heart and lung expression of this gene is controlled by a short fragment of DNA just upstream of the promoter. Based on this result, you decide to investigate this region further to understand its function. Part A You decide to compare this sequence to the regulatory DNA of the same gene found in rats and humans....
The recognition of specific DNA sequences by proteins is thought to depend on two types of...
The recognition of specific DNA sequences by proteins is thought to depend on two types of mechanisms: one that involves the formation of hydrogen bonds with specific bases, primarily in the major groove, and one involving sequence-dependent deformations of the DNA helix. By comprehensively analyzing the three-dimensional structures of protein-DNA complexes, we show that the binding of arginines to narrow minor grooves is a widely used mode for protein-DNA recognition. This readout mechanism exploits the phenomenon that narrow minor grooves...
Which factor is not a DNA‑binding domain found in regulatory proteins? A. RNA recognition motif B....
Which factor is not a DNA‑binding domain found in regulatory proteins? A. RNA recognition motif B. DNA recognition motif C. helix‑turn‑helix D. homeodomain
Select the correct statement about DNA binding proteins. For proteins that have a helix-turn-helix motif, one...
Select the correct statement about DNA binding proteins. For proteins that have a helix-turn-helix motif, one of the alpha helices fits directly into the minor groove of DNA There are two classes of zinc finger motifs found in DNA binding proteins. One is characterized by pairs of cysteines and histidines (the C2H2-type). The second is the Cx-type. The function of both classes is to coordinate zinc. The leucine zipper motif has leucines at alternating residues of an alpha-helix. The hydrophobic...
What are transcription factors? regulatory DNA sequences that bind to the promoter region of a gene regulatory DNA sequences that bind to a protein regulatory motifs that bind to the promoter region of a gene regulatory proteins that bind to specific DNA sequences
How do enhancers differ from promoters as cis-acting regulatory sequences in eukaryotes?
For the enhanceosome, binding sequences are on both strands of DNA. Why? The proteins of the enhanceosome on one strand have a regulatory function, whereas those on the other strand bend the DNA strand. The proteins on one side of the strand bind to GC rich regions and those on the other strand bind to AT rich regions. The proteins of the enhanceosome completely enclose the double helix and straightened the double helix. The proteins on one strand clear the...
You are studying the regulatory DNA of a mouse gene expressed in developing heart, liver, and lung tissue. Your preliminary work has shown that heart and lung expression of this gene is controlled by a short fragment of DNA just upstream of the promoter. Based on this result, you decide to investigate this region further to understand its function. Part A You decide to compare this sequence to the regulatory DNA of the same gene found in rats and humans....
Select the correct statement about DNA binding proteins. For proteins that have a helix-turn-helix motif, one of the alpha helices fits directly into the minor groove of DNA There are two classes of zinc finger motifs found in DNA binding proteins. One is characterized by pairs of cysteines and histidines (the C2H2-type). The second is the Cx-type. The function of both classes is to coordinate zinc. The leucine zipper motif has leucines at alternating residues of an alpha-helix. The hydrophobic...
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