BIM-46187 is a protein inhibitor that binds to the a-subunit of the G, protein. It prevents the GDP/GTP exchange and preventsactivity of the G protein. Which of the following would you expect to see lower levels of as a result? You can select more than oneanswer.S-SMol. W: 795.11Image: https://aobious.com/aobious/protein-inhibitors/1086-bim-46187.htmlSelect one or more:O a. Cyclic AMP (CAMP)O b. Tyrosine kinaseHSPO d. Adenylyl Cyclase (AC)O e.DAGO f. JAKO g. IP3

G protein coupled receptor mediated signalling is initiated upon binding of ligand that triggers a…

Answered: BIM-46187 is a protein inhibitor that…

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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BIM-46187 is a protein inhibitor that binds to the a-subunit of the G. protein. It prevents the GDP/GTP exchange and prevents activity of the G protein. Which of the following would you expect to see lower levels of as a result? You can select more than or answer. S-S NH2 Mol. M: 795.11 Image: https://aobious.com/aobious/protein-inhibitors/1086-bim-46187.html Select one or more: O a. Cyclic AMP (CAMP) O b. Tyrosine kinase O . HSP O d. Adenylyl Cyclase (AC) O e. DAG O f. JAK O g. IP3
In 1994, the U.S. Public Health Service identified “10 Essential Public Health Services.” For each of the ten, briefly describe a specific activity that has been used in the response to COVID-19.
Give the normal value of CRP (C-Reactive Protein). Why is CRP significant? Is CRP specific to one disease?
One of the causes of morbidity for the Zika Virus is Guillain-Barré Syndrome, an immune attack of nerve cells. One possible mechanism for this is the virus's interference with normal immune function. In HIV the virus uses the CD4 receptor to enter T-cells. To assess if this might be a possibility in Zika infections BLAST the CD4 Reference Sequence (NG 027688.1) against the Zika Virus (taxid:64320) choosing "blastn" under Program Selection (select all that apply): O None of the recovered sequences have identities of greater than 80%. O Multiple Zika virus isolates are observed to have E-values of less than 0.02. O High scoring BLAST hits are observed in Zika virus isolates from humans, mosquitoes, and monkeys. O The BLAST hits return a partial cds collected in Uganda in 1947 - isolate Uganda1947.
Starting from the situation below, explain the next immediate steps that occur after the agonist ligand binds to the GPCR. Describe what happens in terms of the GTP and the heterotrimeric G protein structure. www www Ligand α В GTP ZAN Y Copyright ©2009 Pearson Education, Inc. GDP
why is LDHA an attractive target for a cancer therapeutic? https://www.nature.com/articles/s41598-019-40617-3#Tab1
Diisopropylphosphofluoridate (DIPF) inactivates chymotrypsin by covalently modifying serine 195. Which statement is true of DIPF's inhibitory mechanism? DIPF randomly modifies all serine residues on the protein, and if enough is added, the serine in the active site will eventually be modified. DIPF approaches serine 195 more closely than other substrates. DIPF looks like the substrate for chymotrypsin and binds in the active site as a competitive inhibitor. Serine 195 is in an environment that gives it a higher than normal reactivity with respect to DIPF.
For each of the following examples, indicate whether the drug is acting on physical process, chemical process or enzymatic system (your answer should be only; Physical, Chemical or Enzymatic). A. A drug is used as an antidote in lead poisoning and acts by binding to lead particles in body (chelation therapy). B. A drug acts to reduce flatulence and acts by reducing the surface tension of intestinal gas bubbles in the GI tract (e.g. Simethicone). C. A drug competes with alpha-glucosidase in intestine to reduce glucose conversion from disaccharides (e.g. Acarbose).
Thiopurine S-methyltransferase (TPMT) is an enzyme that is responsible for the metabolism of the drugs azathioprine and 6-mercaptopurine, which are used to treat acute lymphoblastic leukemia and inflammatory bowel disease. Metabolism by TPMT reduces the bioavailability of the drugs. In addition to the thiopurine substrates, TPMT also binds S-adenosyl methionine as a cofactor. TPMT is a highly polymorphic enzyme; almost 30 variants are known to be expressed in humans, with most of the variants possessing lower enzymatic activity than the wild-type protein (TPMTwt). Despite having substitutions remote from the active site, TPMT*2 (an A80P variant) and TPMT*5 (an L49S variant) have enzyme activities of 47% and 14% relative to TPMTwt at 18°C, respectively. Two techniques were used to understand the relationships between enzymatic activity and protein stability. Circular dichroism (CD) spectroscopy measures the differential absorption of left and right-circularly polarized light and is used…
HbA1c is used to monitor blood glucose levels because hemoglobin is the only protein in blood that is covalently modified by glucose. True False Insulin Glargine is a long-acting form of insulin that is synthesized with several D-amino acids that slow its proteolytic degradation and extend the half-life of the insulin Glargine molecule. True False
Despite the fact that many peptides have critical physiological functions(e.g., as hormones, neurotransmitters, antibacterial toxins), they are not considered to be ideal as drugs. The following questions illustrate some of the issues that limit the use of peptides as therapeutics.(a) Insulin is a peptide therapeutic used to manage Type 1 diabetes, whichaffects more than 20 million people worldwide according to the International Diabetes Federation. A significant limitation to the broad distribution and use of insulin to treat Type 1 diabetes is the fact that it must be administered by injection rather than orally. Why is insulin administered by injection and not orally?(b) Many of the D-amino acids found in nature have been discovered inbacterially produced peptides that have antibiotic properties. Bacteriasecrete these peptides into their environments to kill competitor bacteriaand thereby gain a selective advantage. Given your answer to part (a) ofthis question, what potential…
Refer to Figure 3 which shows the relationship between phosphofuctokinase-1 (PFK-1) activity and fructose 2,6-bisphosphate. 100 +F2,6BP 80 60 40 -F2,6BP 20 0.05 0.1 0.2 0.4 0.7 1.0 2.0 4.0 EFructose 6-phosphate] (mm) Figure 3 (i) Explain the PFK-1 activity in the absence and presence of fructose 2, 6- bisphosphate. (ii) Explain the effect of increased ATP on PFK-I PFK-1 activity (% of Vma)

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