What is the sequence of the product of transcription of a DNA strand with the following sequence 5'-ATGGCTATCGCA-3"?A. 3-TACCGATAGCGT-5OB. 3-UACCGAUAGCGU-5OC. None of the options given.D.5-UACCGAUAGCGU-3E. 5-TACCGATAGCGT-3 When a cell has enough GTP but needs ATP, IMP dehydrogenase will be(activated/inhibited), GMP synthetase will be(activated/inhibited).(activated/inhibited), adenylosuccinate synthetase will be(activated/inhibited) and nucleoside diphosphate kinase will be

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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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Please describe the 3 main players in the GTPase cycle (GTPase, GAP, GEF)
Why is the GTPase activity of G proteins crucial to the proper functioning of a cell? Why have G proteins not evolved to catalyze GTP hydrolysis more efficiently?
In which condition a trimeric G protein is activated by a cell-surface receptor,a. the a subunit exchanges its bound GDP for GTP.b. the B subunit exchanges its bound GDP for GTP.c. the GDP bound to the a subunit is phosphorylated to form bound GTP.d. it dissociates into a free B subunit and an ay subunit.e. it dissociates into an active a subunit and in inactive By subunit.
What is meant by intrinsic GTPase activity? Exchange of GDP for GTP on the a-subunit of the G protein Inhibition of GBCR receptor activity Activation of Adenylyl Cyclades Breakdown of cAMP by phosphodiesterase Spontaneous hydrolysis of GTP on the a-subunit of the G-protein
RGS proteins accelerate the GAP activity of Gα subunits. What is the direct result of this GAP activity? - hydrolysis of GTP, resulting in a GDP-bound Gα - phosphorylation of GDP to GTP, resulting in a GTP-bound Gα - an exchange of GTP for GDP bound to Gα - an exchange of GDP for GTP bound to Gα
Which of the following best describes the use of 2-deoxyglucose in allowing for cancer therapy? Elevates p53 levels directly to regulate glycolytic flux Blocks activation of HIF1transcriptional activation Diminishes lactate production by inhibiting lactate dehydrogenase to allow increased levels of pyruvate to force the transport of pyruvate into the matrix and the function of the TCA cycle Diminishes lactate export from the cell to allow increased levels of pyruvate to force the transport of pyruvate into the matrix and the function of the TCA cycle Competes with glucose for hexokinase, allowing inhibition of glycolytic flux, reducing ATP production.
Stimulation of map kinase can help regulate cell division and cell mass. the following effects of map kinase activation explains an increase in cell mass. Phosphorylation of RSK (kinase and the subsequent phosphorylation of S6 ribosomal subunit. Phosphorylation of myosin light chain Phosphorylation of glyceraldehyde dehydrogenase phosphorylation of histone H1 none of these
If you have a protein kinase that is regulated by both small molecule inhibitors as well as by phosphorylation, and is part of a cooperative enzyme complex that works as part of a larger pathway involving kinase and GTPase proteins please explain where on this protein regulation could occur, how different types of inhibition could control the function of the protein as well as the function of the complex, and how the protein could regulate other proteins. (This question was previously answered but it was answered incompletely mentioning an herbicide developed in the 1950's. Apparently, it was a plagiarized excerpt from an NCBI article. This is a repost for a full and complete answer. Thank you so much for your help! :) )
In order to metabolize ethanol, the liver uses a pathway that involves alcohol dehydrogenase and aldehyde dehydrogenase. Both of these enzymes generate NADH,NADH, which then accumulates, contributing to the development of fatty liver disease. SELECT ALL of the processes that describe the effects of NADHNADH accumulation? a.promotion of triacylglycerol hydrolysis b.promotion of fatty acid synthesis c.inactivation of transcription factor d.changes in gene transcription
Which of the following is a type of signal transduction pathway controlling gene expression? All of these Protein subunit dissociation pathway Receptor-associated kinase pathway None of these Cytosolic kinase pathway
Kinases are enzymes that transfer a phosphoryl group from a nucleosidetriphosphate. Which of the following are valid kinase-catalyzed reactions? (a) ADP + CMP → AMP + CDP. (b) AMP + ATP → 2 ADP.
Caspase proteins are enzymes known to play a role in programmed cell death (apoptosis) and the inflammatory response. Apoptotic caspases are subcategorized into initiator and executioner caspases. Initiator caspases produce a chain reaction that activates executioner caspases. Caspase 9 is a kind of initiator caspase and caspase 3 is a kind of executioner caspase that plays a direct role in degrading cellular components.Apoptosis can be activated by internal (intrinsic) cellular mechanisms or external (extrinsic) signals. The extrinsic apoptotic pathway begins with the reception of a signal at the death receptors and the intrinsic apoptotic pathway begins with the permeabilization of the mitochondria. Both apoptotic caspase pathways are shown in Figure 1. Caspase proteins have been implicated in the premature death of cornea endothelial tissue being stored for transplant. To investigate the effect of caspases 3 and 9 on tissue degradation, scientists monitored the endothelial cell…

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What is the sequence of the product of transcription of a DNA strand with the following sequence 5'-ATGGCTATCGCA-3" OA. 3-TACCGATAGCGT-5 OB. 3-UACCGAUAGCGU-5 OC. None of the options given. OD.5-UACCGAUAGCGU-3 OE. 5-TACCGATAGCGT-3