Why are receptors proteins rather than any other kind ofmolecule?Proteins are not capable of specific interactions atrecognition sites. This makes proteins ideal for theselectivity receptors must show for particularmessengers.There is no predominance of receptor proteins over anyother kind of molecule.Proteins are capable of specific interactions atrecognition sites. This makes proteins ideal for theselectivity receptors must show for particularmessengers.

Cellular receptors are present either on the cell surface or inside a cell. These receptors receive…

Answered: Why are receptors proteins rather than…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Give an example of contact-dependent signaling. What are some proteins involved?
a) Create a diagram which illustrates the typical signalling mechanism of action of kinase- linked receptors and possible routes of communication (autocrine etc.). Should show the specific molecules involved, the mechanisms of signal transduction and indicate the different pathways that are activated. It should include a specific example of a receptor, ligand and signalling pathway for each general class. Include as wide a variety of ligands and modes of action as you can. for a novel pathway. Superfamily Give the superfamily to which the receptor belongs Accession Give the Uniprot accession number Name Give the molecule name Species Give the species Ligand What is the ligand, or class of ligands which bind to this receptor? What are the physiological processes involved? Is this autocrine, paracrine or endocrine or some combination of them? What is the pathology of the receptor? Key physiological process involved Mechanism of What are the downstream actions of the receptor? Which…
The synaptosome-associated receptors referred to as t-SNARES can be found, as transmembrane proteins, on all of the following eukaryotic cell structures except: mitochondrial membranes peroxisomal membranes chloroplast membranes lysosomal membranes vesicle membranes
From the Hill Plot below, the of the first binding event for the receptor-ligand system under study is: Q1 4 nM 10 μΜ -2 nM 2 nM Calculate the Hill Coefficient from the receptor-ligand binding data below: Q2 4 100 2 3 (077) log 10 8 6 4 2 0 -2 -4 -6 -6 -4 -2 0 2 4 log [L] (nM) 6 8 10
Integrins have many functions, one of which is sensing connections to the extracellular matrix. What is the role of FAK in integrin signaling?
Can you please explain me the following: regulation of receptors: homologous and heterologous receptor desensitization, receptor internalization and trafficking, receptor down-regulation
Which of the following will bind (directly or indirectly) to the phosphate groups on a tyrosine kinase receptor? Ras-GEF Ran-GEF Rab-GEF Sar-GEF O Raf-GEF
From the Hill Plot below, the KD of the first binding event for the receptor-ligand system under study is: 10 8 6 4 2 0 -2 4 6 8 10 (0=1) 601 log -4- -6 -6 -4 -2 0 2
Cholera toxin has which of the following direct or indirect actions: a. opens Na+ channels; Choose all that apply; Group of answer choices closes Cl− channels increases cAMP levels activates αs subunit of GTP-binding protein increases GTPase activity
How could we promote rapid or slow signaling for medical purposes? So there are many examples of slow and rapid signaling via coupled receptors. For an example, salivary gland secretion is rapid signaling and cell growth is slow signaling. These pathways could be twisted and used to resolve medical issues in a more natural and less damaging way. Are there any experiments that have or could be done to test out promoting rapid signaling to speed up slow processes such as cell growth in a severe wound? What experiments have or could be done to test out slowing down signaling that is fast like cells responding to their environment negatively (over-active allergies)? Thank you.
You are studying a pathogenic bacterium which secretes a toxin that affects G protein receptor signaling. You perform a preliminary experiment in which you examine intracellular CAMP levels in untreated and toxin treated cells. The data is in the figure below. How does the toxin affect CAMP levels due to G protein receptor signaling? Select all that apply CAMP levels 250 200 150 100 50 0 no Toxin with Toxin The toxin stimulates GTP binding to the Gas subunit The toxin stimulates GTP binding to the Gai subunit The toxin inhibits GAP or GTPase activating proteins The toxin stimulates adenylyl cyclase activity
The dissociation equilibrium constant (Kd) is:_____ (select all that apply) Group of answer choices: Is a measure of ligand efficacy Typically equivalent to 1- Ka The concentration of ligand that gives maximal receptor occupancy The concentration of ligand that gives half-maximal receptor occupancy Measured in 1/M or M-1 Typically measured in mol/L or M A measure of the strength of a ligand - receptor binding reaction

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