Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 9.2, Problem 1CC
Summary Introduction
To describe: The process before the reassociation of β/γ dimer and α subunit with each other.
Introduction: GPCRs stands for G-protein-coupled-receptors and are present in cells of eukaryotes. It contains transmembrane segments which move back and forth through plasma membrane and interact with the intracellular G proteins.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
BIOC 384
Nuclear Receptor Signaling
Q8.3: Glucocorticoids are potent anti-inflammatory molecules that repress inflammation through transcriptional mechanisms. Beginning with inhalation of the asthma drug fluticasone, describe how this treatment reduces inflammation at the molecular level.
Q1. Explain why GDP cannot dissociate from the alpha subunit of the Trimeric G-protein even though
the receptor is activated by ligand binding and there is enough GTP for the exchange process.
Exercise 5
Membrane receptors are proteins that are incorporated in the cytoplasmic membrane of a cell, allowing the
detection of specific molecules such as (hormones, growth factor) and triggering a cascade of biochemical
Synthesis of protein
reactions.
The adjacent schema represents the steps of
the synthesis of these membrane receptors.
1. Label the structures from a to f.
In order to study the biosynthesis and
secretion of this protein (membrane
receptors), a solution containing radioactive
amino acid was injected in the blood of an
animal. Samples of certain cells were taken
at regular intervals of time. The intensity of
radioactivity was measured in different
cellular organelles.
2000
The table below represents the variations of the quantity of a membrane protein in different parts of the cell,
as function of time.
Time (min)
15
40
50
Structure X
26
12
2
1
Structure Z
0.
6.
10
6.
Structure Y
0.
10
24
2. Represent the obtained results in the form
3. 3.1. Analyze the obtained…
Chapter 9 Solutions
Biology
Ch. 9.1 - Figure 9.1 Response of a yeast cell to glucose....Ch. 9.1 - Prob. 1CSCh. 9.1 - Which type of signal, paracrine or endocrine, is...Ch. 9.1 - Prob. 3CCCh. 9.2 - Prob. 1CSCh. 9.2 - Prob. 2CSCh. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CSCh. 9.3 - Prob. 1CCCh. 9.3 - Prob. 2CC
Ch. 9.3 - In the case of signaling pathways involving...Ch. 9.5 - Prob. 1EQCh. 9.5 - Prob. 2EQCh. 9.5 - Prob. 3EQCh. 9.5 - Prob. 1CCCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 - The relay protein Ras is part of the EGF pathway...Ch. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 1CQCh. 9 - Conceptual Questions What are the three stages of...Ch. 9 - Prob. 3CQCh. 9 - Prob. 1COQCh. 9 - Prob. 2COQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- АСTIVITY For each of the 4 regulatory states of the lac shown in the following diagram, answer the following questions: оperon 1) Is glucose present? 2) Is lactose present? Synthesis of lac MRNA? Glucose present? Lactose present? NO Repressor y a NO CAMP-CRP complex y YES Transcription i p o y NOarrow_forwardBIOC 384 G Protein-Coupled Receptor (GPCR) Signaling Q.7.3: Glucagon and epinephrine both signal stress, which would be low blood glucose levels or acute danger, respectively. Describe the upstream signaling pathways that would be activated in liver cells if you were hungry from a long hike in Sabino Canyon and came across the biggest rattlesnake you had ever seen right in front of you on the trail.arrow_forwardDocking and Membrane Fusion. Q-8a. Choose from the terms below to Fill-in the Blanks. [All terms are used. Some terms are used more than once] Rab, SNARE, v- SNARE, t-SNARE, Tethering a. Identification of a vesicle to be docked depends on a diverse family of monomeric GTPases called proteins. First, a filamentous protein on a target membrane binds to a protein on the surface of a vesicle. This interaction allows the vesicle to dock on its particular target membrane. A on the vesicle then binds to a complementary_ on the target membrane. Whereas and proteins provide the initial recognition between a vesicle and its target membrane, complementary appropriate target membranes. Together, the proteins ensure that transport vesicles dock at their proteins catalyze the final fusion of the two membranes by squeezing out water making fusion more energetically favorable. b. What does the acronym SNARE stand for? c. Membrane fusion the rate limiting step of vesicular transport. Why? (What makes…arrow_forward
- BONUS QUESTION! In neurons, the proteolytic enzyme y-secretase produces the Aß amyloid peptides shown below. The AB40 peptide is thought to play a protective role in the neuron. However, the AB42 peptide appears to be toxic since it is found in the amyloid plaques that cause Alzheimer's Disease (AD). AB40 and AB42 are identical, except that AB42 contains two extra amino acid residues (shown in red) at the C-terminal end. Based on your knowledge of amino acids and proteins, which of the following factors is most likely to explain the greater plaque-forming activity of AB42 compared to AB40? Sequence of Aß40: DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVV Sequence of AB42: DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVVIA O The greater length of AB42 makes it more likely to aggregate and form plaques. O AB42 has a lower pl than AB40, which makes it more likely to aggregate at physiological pH. O AB42 is more hydrophobic than AB40, which makes it harder to clear from the cell and thus more likely to…arrow_forwardHomework Termination: Define the following terms at least 5 related contents included. 1. Cell signaling 2. Intracellular Signaling molecules 3. G protein-coupled receptor 4. MAPK Cascadesarrow_forwardBIOC 384 Overview of Cell Signaling Pathways Q7.2: A first messenger molecule activates a receptor that stimulates Enzyme A, which synthesizes 100 second messenger molecules. In turn, each second messenger activates only one molecule of Enzyme B, which once activated, phosphorylates 100 molecules of Enzyme C that each phosphorylate 75 molecules of Enzyme D. In the last step, each Enzyme D phosphorylates 50 transcription factors. How many transcription factors are phosphorylated in response to the first messenger binding to the receptor? How many transcription factors would be phosphorylated if one copy of the Enzyme D gene were inactivated (heterozygous genotype) so that there were only half the number of functional Enzyme D molecules in the cell? Explain.arrow_forward
- Need help Intaractions of FAK kinase which directly depend on the tyrosine residue 397 (Y397) are inhibbited by a chemical compound in cancercells. Intaraction of FAK kinase with what proteins are blocked by this inhibition? (please give a listt of them all, and that's it)arrow_forwardHow are the effects of paracrine signaling limited to an area near the signaling cells?arrow_forwardWhat is the difference between intracellular signaling and intercellular signaling?arrow_forward
- WHAT IF? What would the effect be if a cell madedefective receptor tyrosine kinase proteins that wereunable to dimerize?arrow_forwardcoded for oxyte Based on your pases would h oxytocin?arrow_forwardEGF-R patho Discuss how the EGF-R becomes activeo How does the active receptor recruit substrate, and how does substrate hold ontoreceptor? When held, what “options” in regards to what the receptor does tobound substrate?o What proteins are involved in the recruitment of ras to the receptor, and how doesras become active – what does it do then? Make sure you include the G-proteinstory.o When active, ras triggers the MAPK cascade – what is the end result of this path.o Discuss the most common mutation in the ras gene found in cancer cells – how doesthis mutation play a role in the cancer cell story?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY