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Function-Related Dynamics in Multi-Spanning Helical Membrane Proteins Revealed by Solution NMR
membranes Review Function-Related Dynamics in Multi-Spanning Helical Membrane Proteins Revealed by Solution NMR Koh Takeuchi 1,* , Yutaka Kofuku 2, Shunsuke Imai 3, Takumi Ueda 2, Yuji Tokunaga 1, Yuki Toyama 2 , Yutaro Shiraishi 3 and Ichio Shimada 2,3,* 1 Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Aomi, Koto, Tokyo 135-0064, Japan; [email protected] 2 Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan; [email protected] (Y.K.); [email protected] (T.U.); [email protected] (Y.T.) 3 Center for Biosystems Dynamics Research, RIKEN, Suehiro, Tsurumi, Yokohama 230-0045, Japan; [email protected] (S.I.); [email protected] (Y.S.) * Correspondence: [email protected] (K.T.); [email protected] (I.S.) Abstract: A primary biological function of multi-spanning membrane proteins is to transfer informa- tion and/or materials through a membrane by changing their conformations. Therefore, particular dynamics of the membrane proteins are tightly associated with their function. The semi-atomic resolution dynamics information revealed by NMR is able to discriminate function-related dynamics from random fluctuations. This review will discuss several studies in which quantitative dynamics information by solution NMR has contributed to revealing the structural basis of the function of multi-spanning membrane proteins, such as ion channels, GPCRs, and transporters. Citation: Takeuchi, K.; Kofuku, Y.; Keywords: membrane protein; NMR; ion channel; GPCR; transporter; dynamics Imai, S.; Ueda, T.; Tokunaga, Y.; Toyama, Y.; Shiraishi, Y.; Shimada, I. -
Principle of Pharmacodynamics
Principle of pharmacodynamics Dr. M. Emamghoreishi Full Professor Department of Pharmacology Medical School Shiraz University of Medical Sciences Email:[email protected] Reference: Basic & Clinical Pharmacology: Bertrum G. Katzung and Anthony J. Treveror, 13th edition, 2015, chapter 20, p. 336-351 Learning Objectives: At the end of sessions, students should be able to: 1. Define pharmacology and explain its importance for a clinician. 2. Define ―drug receptor‖. 3. Explain the nature of drug receptors. 4. Describe other sites of drug actions. 5. Explain the drug-receptor interaction. 6. Define the terms ―affinity‖, ―intrinsic activity‖ and ―Kd‖. 7. Explain the terms ―agonist‖ and ―antagonist‖ and their different types. 8. Explain chemical and physiological antagonists. 9. Explain the differences in drug responsiveness. 10. Explain tolerance, tachyphylaxis, and overshoot. 11. Define different dose-response curves. 12. Explain the information that can be obtained from a graded dose-response curve. 13. Describe the potency and efficacy of drugs. 14. Explain shift of dose-response curves in the presence of competitive and irreversible antagonists and its importance in clinical application of antagonists. 15. Explain the information that can be obtained from a quantal dose-response curve. 16. Define the terms ED50, TD50, LD50, therapeutic index and certain safety factor. What is Pharmacology?It is defined as the study of drugs (substances used to prevent, diagnose, and treat disease). Pharmacology is the science that deals with the interactions betweena drug and the bodyor living systems. The interactions between a drug and the body are conveniently divided into two classes. The actions of the drug on the body are termed pharmacodynamicprocesses.These properties determine the group in which the drug is classified, and they play the major role in deciding whether that group is appropriate therapy for a particular symptom or disease. -
Opioid Receptorsreceptors
OPIOIDOPIOID RECEPTORSRECEPTORS defined or “classical” types of opioid receptor µ,dk and . Alistair Corbett, Sandy McKnight and Graeme Genes encoding for these receptors have been cloned.5, Henderson 6,7,8 More recently, cDNA encoding an “orphan” receptor Dr Alistair Corbett is Lecturer in the School of was identified which has a high degree of homology to Biological and Biomedical Sciences, Glasgow the “classical” opioid receptors; on structural grounds Caledonian University, Cowcaddens Road, this receptor is an opioid receptor and has been named Glasgow G4 0BA, UK. ORL (opioid receptor-like).9 As would be predicted from 1 Dr Sandy McKnight is Associate Director, Parke- their known abilities to couple through pertussis toxin- Davis Neuroscience Research Centre, sensitive G-proteins, all of the cloned opioid receptors Cambridge University Forvie Site, Robinson possess the same general structure of an extracellular Way, Cambridge CB2 2QB, UK. N-terminal region, seven transmembrane domains and Professor Graeme Henderson is Professor of intracellular C-terminal tail structure. There is Pharmacology and Head of Department, pharmacological evidence for subtypes of each Department of Pharmacology, School of Medical receptor and other types of novel, less well- Sciences, University of Bristol, University Walk, characterised opioid receptors,eliz , , , , have also been Bristol BS8 1TD, UK. postulated. Thes -receptor, however, is no longer regarded as an opioid receptor. Introduction Receptor Subtypes Preparations of the opium poppy papaver somniferum m-Receptor subtypes have been used for many hundreds of years to relieve The MOR-1 gene, encoding for one form of them - pain. In 1803, Sertürner isolated a crystalline sample of receptor, shows approximately 50-70% homology to the main constituent alkaloid, morphine, which was later shown to be almost entirely responsible for the the genes encoding for thedk -(DOR-1), -(KOR-1) and orphan (ORL ) receptors. -
Covalent Agonists for Studying G Protein-Coupled Receptor Activation
Covalent agonists for studying G protein-coupled receptor activation Dietmar Weicherta, Andrew C. Kruseb, Aashish Manglikb, Christine Hillera, Cheng Zhangb, Harald Hübnera, Brian K. Kobilkab,1, and Peter Gmeinera,1 aDepartment of Chemistry and Pharmacy, Friedrich Alexander University, 91052 Erlangen, Germany; and bDepartment of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305 Contributed by Brian K. Kobilka, June 6, 2014 (sent for review April 21, 2014) Structural studies on G protein-coupled receptors (GPCRs) provide Disulfide-based cross-linking approaches (17, 18) offer important insights into the architecture and function of these the advantage that the covalent binding of disulfide-containing important drug targets. However, the crystallization of GPCRs in compounds is chemoselective for cysteine and enforced by the active states is particularly challenging, requiring the formation of affinity of the ligand-pharmacophore rather than by the elec- stable and conformationally homogeneous ligand-receptor com- trophilicity of the cross-linking function (19). We refer to the plexes. Native hormones, neurotransmitters, and synthetic ago- described ligands as covalent rather than irreversible agonists nists that bind with low affinity are ineffective at stabilizing an because cleavage may be promoted by reducing agents and the active state for crystallogenesis. To promote structural studies on disulfide transfer process is a reversible chemical reaction the pharmacologically highly relevant class -
Gs- Versus Golf-Dependent Functional Selectivity Mediated by the Dopamine D1 Receptor
ARTICLE DOI: 10.1038/s41467-017-02606-w OPEN Gs- versus Golf-dependent functional selectivity mediated by the dopamine D1 receptor Hideaki Yano1, Ning-Sheng Cai1, Min Xu1, Ravi Kumar Verma1, William Rea1, Alexander F. Hoffman1, Lei Shi1, Jonathan A. Javitch2,3, Antonello Bonci1 & Sergi Ferré1 The two highly homologous subtypes of stimulatory G proteins Gαs (Gs) and Gαolf (Golf) display contrasting expression patterns in the brain. Golf is predominant in the striatum, while 1234567890():,; Gs is predominant in the cortex. Yet, little is known about their functional distinctions. The dopamine D1 receptor (D1R) couples to Gs/olf and is highly expressed in cortical and striatal areas, making it an important therapeutic target for neuropsychiatric disorders. Using novel drug screening methods that allow analysis of specific G-protein subtype coupling, we found that, relative to dopamine, dihydrexidine and N-propyl-apomorphine behave as full D1R agonists when coupled to Gs, but as partial D1R agonists when coupled to Golf. The Gs/Golf- dependent biased agonism by dihydrexidine was consistently observed at the levels of cel- lular signaling, neuronal function, and behavior. Our findings of Gs/Golf-dependent functional selectivity in D1R ligands open a new avenue for the treatment of cortex-specific or striatum- specific neuropsychiatric dysfunction. 1 National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA. 2 Department of Psychiatry, College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA. 3 Division of Molecular Therapeutics, New York State Psychiatric Institute, New York, NY 10032, USA. Correspondence and requests for materials should be addressed to H.Y. -
Making Sense of Pharmacology: Inverse Agonism and Functional Selectivity Kelly A
International Journal of Neuropsychopharmacology (2018) 21(10): 962–977 doi:10.1093/ijnp/pyy071 Advance Access Publication: August 6, 2018 Review review Making Sense of Pharmacology: Inverse Agonism and Functional Selectivity Kelly A. Berg and William P. Clarke Department of Pharmacology, University of Texas Health, San Antonio, Texas. Correspondence: William P. Clarke, PhD, Department of Pharmacology, Mail Stop 7764, UT Health at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229 ([email protected]). Abstract Constitutive receptor activity/inverse agonism and functional selectivity/biased agonism are 2 concepts in contemporary pharmacology that have major implications for the use of drugs in medicine and research as well as for the processes of new drug development. Traditional receptor theory postulated that receptors in a population are quiescent unless activated by a ligand. Within this framework ligands could act as agonists with various degrees of intrinsic efficacy, or as antagonists with zero intrinsic efficacy. We now know that receptors can be active without an activating ligand and thus display “constitutive” activity. As a result, a new class of ligand was discovered that can reduce the constitutive activity of a receptor. These ligands produce the opposite effect of an agonist and are called inverse agonists. The second topic discussed is functional selectivity, also commonly referred to as biased agonism. Traditional receptor theory also posited that intrinsic efficacy is a single drug property independent of the system in which the drug acts. However, we now know that a drug, acting at a single receptor subtype, can have multiple intrinsic efficacies that differ depending on which of the multiple responses coupled to a receptor is measured. -
When Simple Agonism Is Not Enough: Emerging Modalities of GPCR Ligands Nicola J
When simple agonism is not enough: emerging modalities of GPCR ligands Nicola J. Smith, Kirstie A. Bennett, Graeme Milligan To cite this version: Nicola J. Smith, Kirstie A. Bennett, Graeme Milligan. When simple agonism is not enough: emerging modalities of GPCR ligands. Molecular and Cellular Endocrinology, Elsevier, 2010, 331 (2), pp.241. 10.1016/j.mce.2010.07.009. hal-00654484 HAL Id: hal-00654484 https://hal.archives-ouvertes.fr/hal-00654484 Submitted on 22 Dec 2011 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Accepted Manuscript Title: When simple agonism is not enough: emerging modalities of GPCR ligands Authors: Nicola J. Smith, Kirstie A. Bennett, Graeme Milligan PII: S0303-7207(10)00370-9 DOI: doi:10.1016/j.mce.2010.07.009 Reference: MCE 7596 To appear in: Molecular and Cellular Endocrinology Received date: 15-1-2010 Revised date: 15-6-2010 Accepted date: 13-7-2010 Please cite this article as: Smith, N.J., Bennett, K.A., Milligan, G., When simple agonism is not enough: emerging modalities of GPCR ligands, Molecular and Cellular Endocrinology (2010), doi:10.1016/j.mce.2010.07.009 This is a PDF file of an unedited manuscript that has been accepted for publication. -
The Importance of Serotonergic and Adrenergic Receptors for the Induction and Expression of One-Trial Cocaine-Induced Behavioral Sensitization" (2016)
California State University, San Bernardino CSUSB ScholarWorks Electronic Theses, Projects, and Dissertations Office of aduateGr Studies 12-2016 THE IMPORTANCE OF SEROTONERGIC AND ADRENERGIC RECEPTORS FOR THE INDUCTION AND EXPRESSION OF ONE- TRIAL COCAINE-INDUCED BEHAVIORAL SENSITIZATION Krista N. Rudberg California State University - San Bernardino Follow this and additional works at: https://scholarworks.lib.csusb.edu/etd Part of the Biological Psychology Commons, and the Pharmacology Commons Recommended Citation Rudberg, Krista N., "THE IMPORTANCE OF SEROTONERGIC AND ADRENERGIC RECEPTORS FOR THE INDUCTION AND EXPRESSION OF ONE-TRIAL COCAINE-INDUCED BEHAVIORAL SENSITIZATION" (2016). Electronic Theses, Projects, and Dissertations. 420. https://scholarworks.lib.csusb.edu/etd/420 This Thesis is brought to you for free and open access by the Office of aduateGr Studies at CSUSB ScholarWorks. It has been accepted for inclusion in Electronic Theses, Projects, and Dissertations by an authorized administrator of CSUSB ScholarWorks. For more information, please contact [email protected]. THE IMPORTANCE OF SEROTONERGIC AND ADRENERGIC RECEPTORS FOR THE INDUCTION AND EXPRESSION OF ONE-TRIAL COCAINE- INDUCED BEHAVIORAL SENSITIZATION A Thesis Presented to the Faculty of California State University, San Bernardino In Partial Fulfillment of the Requirements for the Degree Master of Arts in General/Experimental Psychology by Krista Nicole Rudberg December 2016 THE IMPORTANCE OF SEROTONERGIC AND ADRENERGIC RECEPTORS FOR THE INDUCTION AND EXPRESSION OF ONE-TRIAL COCAINE- INDUCED BEHAVIORAL SENSITIZATION A Thesis Presented to the Faculty of California State University, San Bernardino by Krista Nicole Rudberg December 2016 Approved by: Sanders McDougall, Committee Chair, Psychology Cynthia Crawford, Committee Member Matthew Riggs, Committee Member © 2016 Krista Nicole Rudberg ABSTRACT Addiction is a complex process in which behavioral sensitization may be an important component. -
Membrane Selectivity by W-Tagging of Antimicrobial Peptides
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Biochimica et Biophysica Acta 1808 (2011) 1081–1091 Contents lists available at ScienceDirect Biochimica et Biophysica Acta journal homepage: www.elsevier.com/locate/bbamem Membrane selectivity by W-tagging of antimicrobial peptides Artur Schmidtchen a, Lovisa Ringstad b, Gopinath Kasetty a, Hiroyasu Mizuno c, Mark W. Rutland c, Martin Malmsten b,⁎ a Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden b Department of Pharmacy, Uppsala University, SE-75123, Uppsala, Sweden c Division of Surface and Corrosion Science, Royal Institute of Technology, SE-10044 Stockholm, Sweden article info abstract Article history: A pronounced membrane selectivity is demonstrated for short, hydrophilic, and highly charged antimicrobial Received 8 October 2010 peptides, end-tagged with aromatic amino acid stretches. The mechanisms underlying this were investigated Received in revised form 16 December 2010 by a method combination of fluorescence and CD spectroscopy, ellipsometry, and Langmuir balance Accepted 20 December 2010 measurements, as well as with functional assays on cell toxicity and antimicrobial effects. End-tagging with Available online 28 December 2010 oligotryptophan promotes peptide-induced lysis of phospholipid liposomes, as well as membrane rupture Keywords: and killing of bacteria and fungi. This antimicrobial potency is accompanied by limited toxicity for human AMP epithelial cells and low hemolysis. The functional selectivity displayed correlates to a pronounced selectivity Antimicrobial peptide of such peptides for anionic lipid membranes, combined with a markedly reduced membrane activity in the Ellipsometry presence of cholesterol. -
A1-Blocker Therapy in the Nineties: Focus on the Disease
Prostate Cancer and Prostatic Diseases (1999) 2 Suppl 4, S9±S15 ß 1999 Stockton Press All rights reserved 1365±7852/99 $15.00 http://www.stockton-press.co.uk/pcan a1-Blocker therapy in the nineties: focus on the disease KHoÈfner1* 1Department of Urology, Hannover Medical School, Hannover, Germany Therapy for benign prostatic hyperplasia has evolved rapidly over the last decade, with the introduction in the early 1990s of new agents such as a1-blockers and 5a-reductase inhibitors. The major advantage of a1-blockers over 5a- reductase inhibitors is their rapid onset of action. Maximum ¯ow rate is improved after ®rst administration and optimal symptom relief is usually reached within 2 ± 3 months. In addition, a1-blockers are effective regardless of prostate size and they provide a similar degree of symptom relief in patients with or without bladder outlet obstruction. The main adverse events with the a1- blockers relate to their effects on the cardiovascular system (postural hypoten- sion) and central penetration (asthenia, somnolence). Newer uroselective a1- blockers, such as alfuzosin and tamsulosin, have a better safety pro®le and, as such, do not require initial dose titration. Alfuzosin has also been shown in a six- month study to signi®cantly reduce both residual urine and the incidence of acute urinary retention (AUR) compared with placebo. In addition, alfuzosin is effective in improving the success rate of a trial without catheter in patients with AUR. Keywords: benign prostatic hyperplasia; prostate; a1-blockers; 5a-reductase inhibitors; acute urinary retention; LUTS Management of BPH adrenoceptors. Medical management of BPH suddenly exploded at the beginning of the 1990s with the introduc- Therapy for benign prostatic hyperplasia (BPH) has tion of selective a1-blockers and 5a-reductase inhibitors. -
Membrane Protein Production for Structural Analysis
Chapter 1 Membrane Protein Production for Structural Analysis Isabelle Mus-Veteau, Pascal Demange and Francesca Zito 1.1 Introduction Integral membrane proteins (IMPs) account for roughly 30 % of all open reading frames in fully sequenced genomes (Liu and Rost 2001). These proteins are of main importance to living cells. They are involved in fundamental biological processes like ion, water, or solute transport, sensing changes in the cellular environment, signal transduction, and control of cell–cell contacts required to maintain cellular homeostasis and to ensure coordinated cellular activity in all organisms. IMP dys- functions are responsible for numerous pathologies like cancer, cystic fibrosis, epi- lepsy, hyperinsulinism, heart failure, hypertension, and Alzheimer diseases. How- ever, studies on these and other disorders are hampered by a lack of information about the involved IMPs. Thus, knowing the structure of IMPs and understanding their molecular mechanism not only is of fundamental biological interest but also holds great potential for enhancing human health. This is of paramount importance in the pharmaceutical industry, which produces many drugs that bind to IMPs, and recognizes the potential of many recently identified G-protein-coupled receptors (GPCRs), ion channels, and transporters, as targets for future drugs. GPCR, which account for 50 % of all drug targets, is one of the largest and most diverse IMP families encoded by more than 800 genes in the human genome (Fredriksson et al. 2003; Lundstrom 2006). However, whereas high-resolution structures are avail- able for a myriad of soluble proteins (more than 42,000 in the Protein Data Bank, I. Mus-Veteau () Institute for Molecular and Cellular Pharmacology, UMR-CNRS 7275, University of Nice-Sophia Antipolis, Valbonne, France e-mail: [email protected] P. -
Anew Drug Design Strategy in the Liht of Molecular Hybridization Concept
www.ijcrt.org © 2020 IJCRT | Volume 8, Issue 12 December 2020 | ISSN: 2320-2882 “Drug Design strategy and chemical process maximization in the light of Molecular Hybridization Concept.” Subhasis Basu, Ph D Registration No: VB 1198 of 2018-2019. Department Of Chemistry, Visva-Bharati University A Draft Thesis is submitted for the partial fulfilment of PhD in Chemistry Thesis/Degree proceeding. DECLARATION I Certify that a. The Work contained in this thesis is original and has been done by me under the guidance of my supervisor. b. The work has not been submitted to any other Institute for any degree or diploma. c. I have followed the guidelines provided by the Institute in preparing the thesis. d. I have conformed to the norms and guidelines given in the Ethical Code of Conduct of the Institute. e. Whenever I have used materials (data, theoretical analysis, figures and text) from other sources, I have given due credit to them by citing them in the text of the thesis and giving their details in the references. Further, I have taken permission from the copyright owners of the sources, whenever necessary. IJCRT2012039 International Journal of Creative Research Thoughts (IJCRT) www.ijcrt.org 284 www.ijcrt.org © 2020 IJCRT | Volume 8, Issue 12 December 2020 | ISSN: 2320-2882 f. Whenever I have quoted written materials from other sources I have put them under quotation marks and given due credit to the sources by citing them and giving required details in the references. (Subhasis Basu) ACKNOWLEDGEMENT This preface is to extend an appreciation to all those individuals who with their generous co- operation guided us in every aspect to make this design and drawing successful.