Abstract
The glycine and γ-aminobutyric acid receptors (GlyR and GABAAR, respectively) are the major inhibitory neurotransmitter-gated receptors in the central nervous system of animals. Given the important role of these receptors in neuronal inhibition, they are prime targets of many therapeutic agents and are the object of intense studies aimed at correlating their structure and function. In this review, the structure and dynamics of these and other homologous members of the nicotinicoid superfamily are described. The modulatory actions of the major biological macromolecules that bind and allosterically affect these receptors are also discussed.
Keywords: Glycinereceptor, GABAAreceptor, nicotinicoid, anesthetics, therapeutics
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References
- 1.Karlin A, Akabas MH. Toward a structural basis for the function of nicotinic acetylcholine receptors and their cousins. Neuron. 1995;15:1231–1244. doi: 10.1016/0896-6273(95)90004-7. [DOI] [PubMed] [Google Scholar]
- 2.Cascio M. Structure and function of the glycine receptor and related nicotinicoid receptors. J Biol Chem. 2004;279:19383–19386. doi: 10.1074/jbc.R300035200. [DOI] [PubMed] [Google Scholar]
- 3.Brejc K, van Dijk WJ, Klaasen RV, et al. Crystal structure of an ACh-binding protein reveals the ligand-binding domain of nicotinic receptors. Nature. 2001;411:269–276. doi: 10.1038/35077011. [DOI] [PubMed] [Google Scholar]
- 4.Unwin N. Refined structure of the nicotinic acetylcholine receptor at 4Å resolution. J Mol Biol. 2005;346:967–989. doi: 10.1016/j.jmb.2004.12.031. [DOI] [PubMed] [Google Scholar]
- 5.Karlin A. Emerging structure of the nicotinic acetylcholine receptors. Nat Rev Neurosci. 2002;3:102–114. doi: 10.1038/nrn731. [DOI] [PubMed] [Google Scholar]
- 6.Lynch JW. Molecular structure and function of the glycine receptor chloride channel. Physiol Rev. 2004;84:1051–1095. doi: 10.1152/physrev.00042.2003. [DOI] [PubMed] [Google Scholar]
- 7.Bowery NG, Smart TG. GABA and glycine as neurotransmitters: a brief history. Br J Pharmacol. 2006;147:S109–S119. doi: 10.1038/sj.bjp.0706443. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 8.Todd AJ, Watt C, Spike RC, Sieghart W. Colocalization of GABA, glycine, and their receptors at synapses in the rat spinal cord. J Neurosci. 1996;16:974–982. doi: 10.1523/JNEUROSCI.16-03-00974.1996. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 9.Jonas P, Bischofberger J, Sandkuhler J. Corelease of two fast neurotransmitters at a central synapse. Science. 1998;281:419–424. doi: 10.1126/science.281.5375.419. [DOI] [PubMed] [Google Scholar]
- 10.O'Brien JA, Berger AJ. Cotransmission of GABA and glycine to brain stem motoneurons. J Neurophysiol. 1999;82:1638–1641. doi: 10.1152/jn.1999.82.3.1638. [DOI] [PubMed] [Google Scholar]
- 11.Russier M, Kopysova IL, Ankri N, Ferrand N, Debanne D. GABA and glycine co-release optimizes functional inhibition in rat brainstem motoneuronsin vitro. J Physiol. 2002;541:123–137. doi: 10.1113/jphysiol.2001.016063. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12.Young TL, Cepko CL. A role for ligand-gated ion channels in rod photoreceptor development. Neuron. 2004;41:867–879. doi: 10.1016/S0896-6273(04)00141-2. [DOI] [PubMed] [Google Scholar]
- 13.Stein V, Nicoll RA. GABA generates excitement. Neuron. 2003;37:375–378. doi: 10.1016/S0896-6273(03)00056-4. [DOI] [PubMed] [Google Scholar]
- 14.Ben-Ari Y. Excitatory actions of GABA during development: the nature of the nurture. Nat Rev Neurosci. 2002;3:728–739. doi: 10.1038/nrn920. [DOI] [PubMed] [Google Scholar]
- 15.Kim G, Kandler K. Elimination and strengthening of glycinergic/GABAergic connections during tonotopic map formation. Nat Neurosci. 2003;6:282–290. doi: 10.1038/nn1015. [DOI] [PubMed] [Google Scholar]
- 16.Li M, Lester HA. Ion channel diseases of the central nervous system. CNS Drug Rev. 2001;7:214–240. doi: 10.1111/j.1527-3458.2001.tb00196.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 17.Gundlach AL. Disorder of the inhibitory glycine receptor: inherited myoclonus in Poll Hereford calves. FASEB J. 1990;4:2761–2766. doi: 10.1096/fasebj.4.10.2165010. [DOI] [PubMed] [Google Scholar]
- 18.Becker C-M, Schmieden V, Tarroni P, Strasser U, Betz H. Isoform-selective deficit of glycine receptors in the mouse mutantspastic. Neuron. 1992;8:283–289. doi: 10.1016/0896-6273(92)90295-O. [DOI] [PubMed] [Google Scholar]
- 19.Shiang R, Ryan SG, Zhu YZ, Hahn AF, O'Connell P, Wasmuth JJ. Mutations in the alpha 1 subunit of the inhibitory glycine receptor cause the dominant neurologic disorder, hyperekplexia. Nat Genet. 1993;5:351–358. doi: 10.1038/ng1293-351. [DOI] [PubMed] [Google Scholar]
- 20.Jones-Davis DM, Macdonald RL. GABAA receptor function and pharmacology in epilepsy and status epilepticus. Curr Opin Pharmacol. 2003;3:12–18. doi: 10.1016/S1471-4892(02)00015-2. [DOI] [PubMed] [Google Scholar]
- 21.Wong CG, Bottiglieri T, Snead OC. GABA, γ-hydroxybutyric acid, and neurological disease. Ann Neurol. 2003;54:S3–12. doi: 10.1002/ana.10696. [DOI] [PubMed] [Google Scholar]
- 22.Pfeiffer F, Graham D, Betz H. Purification by affinity chromatography of the glycine receptor of rat spinal cord. J Biol Chem. 1982;257:9389–9393. [PubMed] [Google Scholar]
- 23.Grudzinska J, Schemm R, Haeger S, et al. The β subunit determines the ligand binding properties of synaptic glycine receptors. Neuron. 2005;45:727–739. doi: 10.1016/j.neuron.2005.01.028. [DOI] [PubMed] [Google Scholar]
- 24.Donizelli M, Djite MA, Le Novere N. LGICdb: a manually curated sequence database after the genomes. Nucleic Acids Res. 2006;34:D267–D269. doi: 10.1093/nar/gkj104. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 25.Hevers W, Luddens H. The diversity of GABAA receptors. Pharmacological and electrophysiological properties of GABAA channel subtypes. Mol Neurobiol. 1998;18:35–86. doi: 10.1007/BF02741459. [DOI] [PubMed] [Google Scholar]
- 26.Sine SM, Wang HL, Bren N. Lysine scanning mutagenesis delineates structural model of the nicotinic receptor ligand binding domain. J Biol Chem. 2002;277:29210–29223. doi: 10.1074/jbc.M203396200. [DOI] [PubMed] [Google Scholar]
- 27.Bouzat C, Gumilar F, Spitzmaul G, et al. Coupling of agonist binding to channel gating in an ACh-binding protein linked to an ion channel. Nature. 2004;430:896–900. doi: 10.1038/nature02753. [DOI] [PubMed] [Google Scholar]
- 28.Cromer BA, Morton CJ, Parker MW. Anxiety over GABAA receptor structure relieved by AChBP. Trends Biochem Sci. 2002;27:280–287. doi: 10.1016/S0968-0004(02)02092-3. [DOI] [PubMed] [Google Scholar]
- 29.Henchman RH, Wang HL, Sine SM, Taylor P, McCammon JA. Asymmetric structural motions of the homoneric α7 nicotinic receptor ligand binding domain revealed by molecular dynamics simulation. Biophys J. 2003;85:3007–3018. doi: 10.1016/S0006-3495(03)74720-1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 30.Nevin ST, Cromer BA, Haddrill JL, Morton CJ, Parker MW, Lynch JW. Insights into the structural basis for zinc inhibition of the glycine receptor. J Biol Chem. 2003;278:28985–28992. doi: 10.1074/jbc.M300097200. [DOI] [PubMed] [Google Scholar]
- 31.Absalom NL, Lewis TM, Kaplan W, Pierce KD, Schofield PR. Role of charged residues in coupling ligand binding and channel activation in the extracellular domain of the glycine receptor. J Biol Chem. 2003;278:50151–50157. doi: 10.1074/jbc.M305357200. [DOI] [PubMed] [Google Scholar]
- 32.Reeves DC, Lummis SC. The molecular basis of the structure and function of the 5-HT3 receptor: a model ligand-gated ion channel. Mol Membr Biol. 2002;19:11–26. doi: 10.1080/09687680110110048. [DOI] [PubMed] [Google Scholar]
- 33.Grutter T, Prado de Carvalho L, Virginie D, Taly A, Fischer M, Changeux JP. A chimera encoding the fusion of an acetylcholine-binding protein to an ion channel is stabilized in a state close to the desensitized form of ligand-gated ion channels. C R Biol. 2005;328:223–234. doi: 10.1016/j.crvi.2004.11.004. [DOI] [PubMed] [Google Scholar]
- 34.Horikoshi T, Asanuma A, Yanagisawa K, Anzai K, Goto S. Taurine and β-alanine act on both GABA and glycine receptors inXenopus oocyte injected with mouse brain messenger RNA. Brain Res. 1988;464:97–105. doi: 10.1016/0169-328x(88)90002-2. [DOI] [PubMed] [Google Scholar]
- 35.Wafford KA, Ebert B. Gaboxadol—a new awakening in sleep. Curr Opin Pharmacol. 2006;6:30–36. doi: 10.1016/j.coph.2005.10.004. [DOI] [PubMed] [Google Scholar]
- 36.Schmieden V, Kuhse J, Betz H. Mutation of glycine receptor subunit creates β-alanine receptor responsive to GABA. Science. 1993;262:256–258. doi: 10.1126/science.8211147. [DOI] [PubMed] [Google Scholar]
- 37.Bloomenthal AB, Goldwater E, Pritchett DB, Harrison NL. Biphasic modulation of the strychnine-sensitive glycine receptor by Zn2+ Mol Pharmacol. 1994;46:1156–1159. [PubMed] [Google Scholar]
- 38.Lynch JW, Jacques P, Pierce KD, Schofield PR. Zinc potentiation of the glycine receptor chloride channel is mediated by allosteric pathways. J Neurochem. 1998;71:2159–2168. doi: 10.1046/j.1471-4159.1998.71052159.x. [DOI] [PubMed] [Google Scholar]
- 39.Miller PS, Da Silva HM, Smart TG. Molecular basis for zinc potentiation at strychnine-sensitive glycine receptors. J Biol Chem. 2005;280:37877–37884. doi: 10.1074/jbc.M508303200. [DOI] [PubMed] [Google Scholar]
- 40.Hosie AM, Dunne EL, Harvey RJ, Smart TG. Zinc-mediated inhibition of GABAA receptors: discrete binding sites underlie subtype specificity. Nat Neurosci. 2003;6:362–369. doi: 10.1038/nn1030. [DOI] [PubMed] [Google Scholar]
- 41.Chen Z, Dillon GH, Huang R. Molecular determinants of proton modulation of glycine receptors. J Biol Chem. 2004;279:876–883. doi: 10.1074/jbc.M307684200. [DOI] [PubMed] [Google Scholar]
- 42.Wilkins ME, Hosie AM, Smart TG. Identification of a beta subunit TM2 residue mediating proton modulation of GABAA receptors. J Neurosci. 2002;22:5328–5333. doi: 10.1523/JNEUROSCI.22-13-05328.2002. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 43.Wilkins ME, Hosie AM, Smart TG. Proton modulation of recombinant GABAA receptors: influence of GABA concentration and the beta subunit TM2-TM3 domain. J Physiol. 2005;567:365–377. doi: 10.1113/jphysiol.2005.088823. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 44.Miyazawa A, Fujiyoshi Y, Unwin N. Structure and gating mechanism of the acetylcholine receptor pore. Nature. 2003;423:949–955. doi: 10.1038/nature01748. [DOI] [PubMed] [Google Scholar]
- 45.Auerbach A. Gating of acetylcholine receptor channels: Brownian motion across a broad transition state. Proc Natl Acad Sci USA. 2005;102:1408–1412. doi: 10.1073/pnas.0406787102. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 46.Lummis SC, Beene DL, Lee LW, Lester HA, Broadhurst RW, Dougherty DA. Cis-trans isomerization at a proline opens the pore of a neurotransmitter-gated ion channel. Nature. 2005;438:248–252. doi: 10.1038/nature04130. [DOI] [PubMed] [Google Scholar]
- 47.Xiu X, Hanek AP, Wang J, Lester HA, Dougherty DA. A unified view of the role of electrostatic interactions in modulating the gating of cys loop receptors. J Biol Chem. 2005;280:41655–41666. doi: 10.1074/jbc.M508635200. [DOI] [PubMed] [Google Scholar]
- 48.Paas Y, Gibor G, Grailhe R, et al. Pore conformations and gating mechanism of a cys-loop receptor. Proc Natl Acad Sci USA. 2005;102:15877–15882. doi: 10.1073/pnas.0507599102. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 49.Tang P, Mandal PK, Xu Y. NMR structures of the second transmembrane domain of the human glycine receptor α1 subunit: model of pore architecture and channel gating. Biophys J. 2002;83:252–262. doi: 10.1016/S0006-3495(02)75166-7. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 50.Kash TL, Trudell JR, Harrison NL. Structural elements involved in activation of the gamma-aminobutyric acid type A GABAA receptor. Biochem Soc Trans. 2004;32:540–546. doi: 10.1042/BST0320540. [DOI] [PubMed] [Google Scholar]
- 51.Kash TL, Jenkins A, Kelley JC, Trudell JR, Harrison NL. Coupling of agonist binding to channel gating in the GABAA receptor. Nature. 2003;421:272–275. doi: 10.1038/nature01280. [DOI] [PubMed] [Google Scholar]
- 52.Schofield CM, Jenkins A, Harrison NL. A highly conserved aspartic acid residue in the signature disulfide loop of the α1 subunit is a determinant of gating in the glycine receptor. J Biol Chem. 2003;278:34079–34083. doi: 10.1074/jbc.M302416200. [DOI] [PubMed] [Google Scholar]
- 53.Schofield CM, Trudell JR, Harrison NL. Alanine-scanning mutagenesis in the signature disulfide loop of the glycine receptor α1 subunit: critical residues for activation and modulation. Biochemistry. 2004;43:10058–10063. doi: 10.1021/bi036159g. [DOI] [PubMed] [Google Scholar]
- 54.Boileau AJ, Czajkowski C. Identification of transduction elements for benzodiazepine modulation of the GABAA receptor: three residues are required for allosteric coupling. J Neurosci. 1999;19:10213–10220. doi: 10.1523/JNEUROSCI.19-23-10213.1999. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 55.Tasneem A, Iyer LM, Jakobsson E, Aravind L. Identification of the prokaryotic ligand-gated ion channels and their implications for the mechanisms and origins of animal Cys-loop ion channels. Genome Biol. 2005;6:R4–R4. doi: 10.1186/gb-2004-6-1-r4. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 56.Changeux J, Edelstein SJ. Allosteric mechanisms in normal and pathological nicotinic acetylcholine receptors. Curr Opin Neurobiol. 2001;11:369–377. doi: 10.1016/S0959-4388(00)00221-X. [DOI] [PubMed] [Google Scholar]
- 57.Williams DB, Akabas MH. γ-aminobutyric acid increases the water accessibility of M3 membrane-spanning segment residues in γ-aminobutyric acid type A receptors. Biophys J. 1999;77:2563–2574. doi: 10.1016/S0006-3495(99)77091-8. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 58.Williams DB, Akabas MH. Benzodiazepines induce a conformational change in the region of the γ-aminobutyric acid type A receptor α1-subunit M3 membrane-spanning segment. Mol Pharmacol. 2000;58:1129–1136. doi: 10.1124/mol.58.5.1129. [DOI] [PubMed] [Google Scholar]
- 59.Horenstein J, Wagner DA, Cjajkowski C, Akabas MH. Protein mobility and GABA-induced conformational changes in GABAA receptor pore-lining M2 segment. Nat Neurosci. 2001;4:477–485. doi: 10.1038/87425. [DOI] [PubMed] [Google Scholar]
- 60.Bera AK, Chatav M, Akabas MH. GABAA receptor M2-M3 loop secondary structure and changes in accessibility during channel gating. J Biol Chem. 2002;277:43002–43010. doi: 10.1074/jbc.M206321200. [DOI] [PubMed] [Google Scholar]
- 61.Horenstein J, Riegelhaupt P, Akabas MH. Differential protein mobility of the GABAA receptor α and β subunit channel-lining segments. J Biol Chem. 2005;280:1573–1581. doi: 10.1074/jbc.M410881200. [DOI] [PubMed] [Google Scholar]
- 62.Lynch JW, Han NL, Haddrill J, Pierce KD, Schofield PR. The surface accessibility of the glycine, receptor M2-M3 loop is increased in the channel open state. J Neurosci. 2001;21:2589–2599. doi: 10.1523/JNEUROSCI.21-08-02589.2001. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 63.Shan Q, Haddrill JL, Lynch JW. Comparative surface accessibility of a pore-lining threonine residue (T6′) in the glycine and GABAA receptors. J Biol Chem. 2002;277:44845–44853. doi: 10.1074/jbc.M208647200. [DOI] [PubMed] [Google Scholar]
- 64.Hawthorne R, Lynch JW. A picrotoxin-specific conformational change in the glycine receptor M2–M3 loop. J Biol Chem. 2005;280:35836–35843. doi: 10.1074/jbc.M506645200. [DOI] [PubMed] [Google Scholar]
- 65.Lobo IA, Mascia MP, Trudell JR, Harris RA. Channel gating of the glycine receptor changes accessibility to residues implicated in receptor potentiation by alcohols and anesthetics. J Biol Chem. 2004;279:33919–33927. doi: 10.1074/jbc.M313941200. [DOI] [PubMed] [Google Scholar]
- 66.Lobo IA, Trudell JR, Harris RA. Accessibility to residues in transmem brane segment four of the glycine receptor. Neuropharmacology. 2006;50:174–181. doi: 10.1016/j.neuropharm.2005.08.017. [DOI] [PubMed] [Google Scholar]
- 67.Bera AK, Akabas MH. Spontaneous thermal motion of the GABAA receptor M2 channel-lining segments. J Biol Chem. 2005;280:35506–35512. doi: 10.1074/jbc.M504645200. [DOI] [PubMed] [Google Scholar]
- 68.Han NL, Clements JD, Lynch JW. Comparison of taurine-and glycine-induced conformational changes in the M2–M3 domain of the glycine receptor. J Biol Chem. 2004;279:19559–19565. doi: 10.1074/jbc.M400548200. [DOI] [PubMed] [Google Scholar]
- 69.Chang Y, Weiss DS. Site-specific fluorescence reveals distinct structural changes with GABA receptor activation and antagonism. Nat Neurosci. 2002;5:1163–1168. doi: 10.1038/nn926. [DOI] [PubMed] [Google Scholar]
- 70.Lee AG. Lipid-protein interactions in biological membranes: a structural perspective. Biochim Biophys Acta. 2003;1612:1–40. doi: 10.1016/S0005-2736(03)00056-7. [DOI] [PubMed] [Google Scholar]
- 71.Anderson RG, Jacobson K. A role for lipid shells in targeting proteins to caveolae, rafts, and other lipid domains. Science. 2002;296:1821–1825. doi: 10.1126/science.1068886. [DOI] [PubMed] [Google Scholar]
- 72.Tillman T, Cascio M. Effects of membrane lipids on ion channel structure and function. Cell Biochem Biophys. 2003;38:161–190. doi: 10.1385/CBB:38:2:161. [DOI] [PubMed] [Google Scholar]
- 73.Cascio M. Connexins and their environment: effects of lipids composition on ion channels. Biochim Biophys Acta. 2005;1711:142–153. doi: 10.1016/j.bbamem.2004.12.001. [DOI] [PubMed] [Google Scholar]
- 74.Barrantes FJ. Structural basis for lipid modulation of nicotinic acetylcholine receptor function. Brain Res Brain Res Rev. 2004;47:71–95. doi: 10.1016/j.brainresrev.2004.06.008. [DOI] [PubMed] [Google Scholar]
- 75.Baenziger JE, Morris M-L, Darsaut TE, Ryan SE. Effect of membrane lipid composition on the conformational equilibria of the nicotinic acetylcholine receptor. J Biol Chem. 2000;275:777–784. doi: 10.1074/jbc.275.2.777. [DOI] [PubMed] [Google Scholar]
- 76.daCosta CJ, Ogrel AA, McCardy EA, Blanton MP, Baenziger JE. Lipid-protein interactions at the nicotinic acetylcholine receptor. A functional coupling between nicotinic receptors and phosphatidic acid-containing lipid bilayers. J Biol Chem. 2002;277:201–208. doi: 10.1074/jbc.M108341200. [DOI] [PubMed] [Google Scholar]
- 77.daCosta CJ, Wagg ID, McKay ME, Baenziger JE. Phosphatidic acid and phosphatidylserine have distinct structural and functional interactions with the nicotinic acetylcholine receptor. J Biol Chem. 2004;279:14967–14974. doi: 10.1074/jbc.M310037200. [DOI] [PubMed] [Google Scholar]
- 78.Blanton MP, Cohen JB. Identifying the lipid-protein interface of theTorpedo nicotinic acetylcholine receptor: secondary structure implications. Biochemistry. 1994;33:2859–2872. doi: 10.1021/bi00176a016. [DOI] [PubMed] [Google Scholar]
- 79.Blanton MP, McCardy EA, Huggins A, Parikh D. Probing the structure of the nicotinic acetylcholine receptor with the hydrophobic photoreactive probes [125I]TID-BE and [125I]TIDPC/16. Biochemistry. 1998;37:14545–14555. doi: 10.1021/bi981435q. [DOI] [PubMed] [Google Scholar]
- 80.Leite JF, Blanton MP, Shahgholi M, Dougherty DA, Lester HA. Conformation-dependent hydrophobic photolabeling of the nicotinic receptor: electrophysiology-coordinated photochemistry and mass spectrometry. Proc Natl Acad Sci USA. 2003;100:13054–13059. doi: 10.1073/pnas.2133028100. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 81.Hamouda AK, Chiara DC, Sauls D, Cohen JB, Blanton MP. Cholesterol interacts with transmembrane α-helices M1, M3, and M4 of theTorpedo nicotinic acetylcholine receptor: photolabeling studies using [(3)h]azicholesterol. Biochemistry. 2006;45:976–986. doi: 10.1021/bi051978h. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 82.Barrantes FJ, Antollini SS, Blanton MP, Prieto M. Topography of nicotinic acetylcholine receptor membrane-embedded domains. J Biol Chem. 2000;275:37333–37339. doi: 10.1074/jbc.M005246200. [DOI] [PubMed] [Google Scholar]
- 83.Mantipragada SB, Horvath LI, Arias HR, et al. Lipid-protein interactions and effect of local anesthetics in acetylcholine receptor-rich membranes fromTorpedo marmorata electric organ. Biochemistry. 2003;42:9167–9175. doi: 10.1021/bi034485q. [DOI] [PubMed] [Google Scholar]
- 84.Maxfield FR, Tabas I. Role of cholesterol and lipid organization in disease. Nature. 2005;438:612–621. doi: 10.1038/nature04399. [DOI] [PubMed] [Google Scholar]
- 85.Corbin J, Wang HH, Blanton MP. Identifying the cholesterol binding domain in the nicotinic acetylcholine receptor with [125I]azido-cholesterol. Biochim Biophys Acta. 1998;1414:65–74. doi: 10.1016/S0005-2736(98)00153-9. [DOI] [PubMed] [Google Scholar]
- 86.Jones OT, McNamee MG. Annular and nonannular binding sites for cholesterol associated with the nicotinic acetylcholine receptor. Biochemistry. 1988;27:2364–2374. doi: 10.1021/bi00407a018. [DOI] [PubMed] [Google Scholar]
- 87.Addona GH, Sandermann HJ, Kloczewiak MA, Husain SS, Miller KW. Where does cholesterol act during activation of the nicotinic acetylcholine receptor? Biochim Biophys Acta. 1998;1370:299–309. doi: 10.1016/S0005-2736(97)00280-0. [DOI] [PubMed] [Google Scholar]
- 88.Laube B. Membrane cholesterol affects the pharmacology of the recombinant inhibitory glycine receptor. 33rd Society for Neuroscience Annual Meeting Neurobiology of Lipids Sessions.Neurobiol Lipids. 2003; Available at: http://neurobiologyoflipids.org/content/2/3/.
- 89.Sooksawate T, Simmonds MA. Influence of membrane cholesterol on modulation of the GABAA receptor by neuroactive steroids and other potentiators. Br J Pharmacol. 2001;134:1303–1311. doi: 10.1038/sj.bjp.0704360. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 90.Sooksawate T, Simmonds MA. Effects of membrane cholesterol on the sensitivity of the GABAA receptor to GABA in acutely dissociated rat hippocampal neurones. Neuropharmacology. 2001;40:178–184. doi: 10.1016/S0028-3908(00)00159-3. [DOI] [PubMed] [Google Scholar]
- 91.Cascio M, Shenkel S, Grodzicki RL, Sigworth FJ, Foxi RO. Functional reconstitution and characterization of recombinant human α1-glycine receptors. J Biol Chem. 2001;276:20981–20988. doi: 10.1074/jbc.M010968200. [DOI] [PubMed] [Google Scholar]
- 92.Cantor RS. Lipid composition and the lateral pressure profile in bilayers. Biophys J. 1999;76:2625–2639. doi: 10.1016/S0006-3495(99)77415-1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 93.Cantor RS. Receptor desensitization by neurotransmitters in membranes: are neurotransmitters the endogenous anesthetics? Biochemistry. 2003;42:11891–11897. doi: 10.1021/bi034534z. [DOI] [PubMed] [Google Scholar]
- 94.Trudell JR, Bertaccini E. Molecular modeling of specific and non-specific anaesthetic interactions. Br J Anaesth. 2002;89:32–40. doi: 10.1093/bja/aef157. [DOI] [PubMed] [Google Scholar]
- 95.Miller KW. The nature of sites of general anaesthetic action. Br J Anaesth. 2002;89:17–31. doi: 10.1093/bja/aef167. [DOI] [PubMed] [Google Scholar]
- 96.Yamakura T, Bertaccini E, Trudell JR, Harris RA. Anesthetics and ion channels: molecular models and sites of action. Annu Rev Pharmacol Toxicol. 2001;41:23–51. doi: 10.1146/annurev.pharmtox.41.1.23. [DOI] [PubMed] [Google Scholar]
- 97.Hemmings HC, Akabas MH, Goldstein PA, Trudell JR, Orser BA, Harrison NL. Emerging molecular mechanisms of general anesthetic action. Trends Pharmacol Sci. 2005;26:503–510. doi: 10.1016/j.tips.2005.08.006. [DOI] [PubMed] [Google Scholar]
- 98.Beckstead MJ, Weiner JL, Eger EI, Gong DH, Mihic SJ. Glycine and GABAA receptor function is enhanced by inhaled drugs of abuse. Mol Pharmacol. 2000;57:1199–1205. [PubMed] [Google Scholar]
- 99.Mihic SJ, Ye Q, Wick MJ, et al. Sites of alcohol and volatile anaesthetic action on GABA(A) and glycine receptors. Nature. 1997;389:385–389. doi: 10.1038/38738. [DOI] [PubMed] [Google Scholar]
- 100.Mascia MP, Trudell JR, Harris RA. Specific binding sites for alcohols and anesthetics on ligand-gated ion channels. Proc Natl Acad Sci USA. 2000;97:9305–9310. doi: 10.1073/pnas.160128797. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 101.Lobo IA, Harris RA. Sites of alcohol and volatile anesthetic action on glycine receptors. Int Rev Neurobiol. 2005;65:53–87. doi: 10.1016/S0074-7742(04)65003-3. [DOI] [PubMed] [Google Scholar]
- 102.Jung S, Akabas MH, Harris RA. Functional and structural analysis of the GABAA receptor α1 subunit during channel gating and alcohol modulation. J Biol Chem. 2005;280:308–316. doi: 10.1074/jbc.M409871200. [DOI] [PubMed] [Google Scholar]
- 103.Jung S, Harris RA. Sites in TM2 and 3 are critical for alcohol-induced conformational changes in GABA receptors. J Neurochem. 2006;96:885–892. doi: 10.1111/j.1471-4159.2005.03617.x. [DOI] [PubMed] [Google Scholar]
- 104.Jenkins A, Andreasen A, Trudell JR, Harrison NL. Tryptophan scanning mutagenesis in TM4 of the GABAA receptor alphal subunit: implications for modulation by inhaled anesthetics and ion channel structure. Neuropharmacology. 2002;43:669–678. doi: 10.1016/S0028-3908(02)00175-2. [DOI] [PubMed] [Google Scholar]
- 105.Belelli D, Lambert JJ. Neurosteroids: endogenous regulators of the GABAA receptor. Nat Rev Neurosci. 2005;6:565–575. doi: 10.1038/nrn1703. [DOI] [PubMed] [Google Scholar]
- 106.Rick CE, Ye Q, Finn SE, Harrison NL. Neurosteroids act on the GABAA receptor at sites on the N-terminal side of the middle of TM2. Neuroreport. 1998;9:379–383. doi: 10.1097/00001756-199802160-00004. [DOI] [PubMed] [Google Scholar]
- 107.Carlson BX, Engblom AC, Kristiansen U, Schousboe A, Olsen RW. A single glycine residue at the entrance to the first membrane-spanning domain of the GABAA receptor β2 subunit affects allosteric sensitivity to GABA and anesthetics. Mol Pharmacol. 2000;57:474–484. doi: 10.1124/mol.57.3.474. [DOI] [PubMed] [Google Scholar]
- 108.Maksay G, Laube B, Betz H. Subunit-specific modulation of glycine receptors by neurosteroids. Neuropharmacology. 2001;41:369–376. doi: 10.1016/S0028-3908(01)00071-5. [DOI] [PubMed] [Google Scholar]
- 109.Eser D, Romeo E, Baghai TC, et al. Neuroactive steroids as modulators of depression and anxiety. Neuroscience. 2006;138:1041–1048. doi: 10.1016/j.neuroscience.2005.07.007. [DOI] [PubMed] [Google Scholar]
- 110.Belelli D, Herd MB, Mitchell EA, et al. Neuroactive steroids and inhibitory neurotransmission: mechanisms of action and physiological relevance. Neuroscience. 2006;138:821–829. doi: 10.1016/j.neuroscience.2005.07.021. [DOI] [PubMed] [Google Scholar]
- 111.Soderpalm B, Ericson M, Olausson P, Blomqvist O, Engel JA. Nicotinic mechanisms involved in the dopamine activating and reinforcing properties of ethanol. Behav Brain Res. 2000;113:85–96. doi: 10.1016/S0166-4328(00)00203-5. [DOI] [PubMed] [Google Scholar]
- 112.Laviolette SR, van der Kooy D. The neurobiology of nicotine addiction: bridging the gap from molecules to behaviour. Nat Rev Neurosci. 2004;5:55–65. doi: 10.1038/nrn1298. [DOI] [PubMed] [Google Scholar]
- 113.Malcolm RJ. GABA systems, benzodiazepines, and substance dependence. J Clin Psychiatry. 2003;64:36–40. [PubMed] [Google Scholar]
- 114.Davies M. The role of GABAA receptors in mediating the effects of alcohol in the central nervous system. J Psychiatry Neurosci. 2003;28:263–274. [PMC free article] [PubMed] [Google Scholar]
- 115.Molander A, Lof E, Stomberg R, Ericson M, Soderpalm B. Involvement of accumbal glycine receptors in the regulation of voluntary ethanol intake in the rat. Alcohol Clin Exp Res. 2005;29:38–45. doi: 10.1097/01.ALC.0000150009.78622.E0. [DOI] [PubMed] [Google Scholar]
- 116.Molander A, Soderpalm B. Accumbal strychnine-sensitive glycine receptors: an access point for ethanol to the brain reward system. Alcohol Clin Exp Res. 2005;29:27–37. doi: 10.1097/01.ALC.0000150012.09608.81. [DOI] [PubMed] [Google Scholar]
- 117.Ye JH, Tao L, Ren J, et al. Ethanol potentiation of glycine-induced responses in dissociated neurons of rat ventral tegmental area. J Pharmacol Exp Ther. 2001;296:77–83. [PubMed] [Google Scholar]
- 118.Ren J, Ye JH, Liu PL, Krnjevic K, McArdle JJ. Cocaine decreases the glycine-induced Cl− current of acutely dissociated rat hippocampal neurons. Eur J Pharmacol. 1999;367:125–130. doi: 10.1016/S0014-2999(98)00954-6. [DOI] [PubMed] [Google Scholar]
- 119.Beckstead MJ, Weiner JL, Eger EI, Gong DH, Mihic SJ. Glycine and γ-aminobutyric acid receptor function is enhanced by inhaled drugs of abuse. Mol Pharmacol. 2000;57:1199–1205. [PubMed] [Google Scholar]
- 120.Foster AC, Kemp JA. Glutamate- and GABA-based CNS therapeutics. Curr Opin Pharmacol. 2006;6:7–17. doi: 10.1016/j.coph.2005.11.005. [DOI] [PubMed] [Google Scholar]
- 121.Rogawski MA, Loscher W. The neurobiology of antiepileptic drugs. Nat Rev Neurosci. 2004;5:553–564. doi: 10.1038/nrn1430. [DOI] [PubMed] [Google Scholar]
- 122.Kaindl AM, Asimiadou S, Manthey D, Hagen MV, Turski L, Ikonomidou C. Antiepileptic drugs and the developing brain. Cell Mol Life Sci. 2006;63:399–413. doi: 10.1007/s00018-005-5348-0. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 123.Sigel E, Schaerer MT, Buhr A, Baur R. The benzodiazepine binding pocket of recombinant α1bα2γ2 GABAA receptors: relative orientation of ligands and amino acid side chains. Mol Pharmacol. 1998;54:1097–1105. doi: 10.1124/mol.54.6.1097. [DOI] [PubMed] [Google Scholar]
- 124.Haefely W, Kulcsar A, Mohler H. Possible involvement of GABA in the central actions of benzodiazepines. Psychopharmacol Bull. 1975;11:58–59. [PubMed] [Google Scholar]
- 125.Ramakrishnan L, Hess GP. Picrotoxin inhibition mechanism of a GABAA receptor investigated by a laser-pulse photolysis technique. Biochemistry. 2005;44:8523–8532. doi: 10.1021/bi0477283. [DOI] [PubMed] [Google Scholar]
- 126.Legendre P. The glycinergic inhibitory synapse. Cell Mol Life Sci. 2001;58:760–793. doi: 10.1007/PL00000899. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 127.Alldred MJ, Mulder-Rosi J, Lingenfelter SE, Chen G, Luscher B. Distinct γ2 subunit domains mediate clustering and synaptic function of postysnaptic GABAA receptors and gephyrin. J Neurosci. 2005;25:594–603. doi: 10.1523/JNEUROSCI.4011-04.2005. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 128.Huang ZJ. Subcellular organization of GABA ergic synapses: role of ankyrins and L1 cell adhesion molecules. Nat Neurosci. 2006;9:163–166. doi: 10.1038/nn1638. [DOI] [PubMed] [Google Scholar]
- 129.Sola M, Bavro VN, Timmins J, et al. Structural basis of dynamic glycine receptor clustering by gephyrin. EMBO J. 2004;23:2510–2519. doi: 10.1038/sj.emboj.7600256. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 130.Yevenes GE, Peoples RW, Tapia JC, et al. Modulation of glycine-activated ion channel function by G-protein βγ subunits. Nat Neurosci. 2003;6:819–824. doi: 10.1038/nn1095. [DOI] [PubMed] [Google Scholar]
- 131.Liu F, Wan Q, Pristupa ZB, Yu XM, Wang YT, Niznik HB. Direct protein-protein coupling enables cross-talk between dopamine D5 and γ-aminobutyric acid A receptors. Nature. 2000;403:274–280. doi: 10.1038/35001232. [DOI] [PubMed] [Google Scholar]
- 132.Luscher B, Keller CA. Regulation of GABAA receptor trafficking, channel activity, and functional plasticity of inhibitory synapses. Pharmacol Ther. 2004;102:195–221. doi: 10.1016/j.pharmthera.2004.04.003. [DOI] [PubMed] [Google Scholar]
- 133.Collingridge GL, Isaac JT, Wang YT. Receptor trafficking and synaptic plasticity. Nat Rev Neurosci. 2004;5:952–962. doi: 10.1038/nrn1556. [DOI] [PubMed] [Google Scholar]
- 134.Vaello M-L, Ruiz-Gómez A, Lerma J, Mayor FJ. Modulation of inhibitory glycine receptors by phosphorylation by protein kinase C and cAMP-dependent protein kinase. J Biol Chem. 1994;269:2002–2008. [PubMed] [Google Scholar]
- 135.Caraiscos VB, Mihic SJ, MacDonald JF, Orser BA. Tyrosine kinases enhance the function of glycine receptors in rat hippocampal neurons and human α1β glycine receptors. J Physiol. 2002;539:495–502. doi: 10.1113/jphysiol.2001.013508. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 136.Song M, Messing RO. Protein kinase C regulation of GABAA receptors. Cell Mol Life Sci. 2005;62:119–127. doi: 10.1007/s00018-004-4339-x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 137.Gentet LJ, Clements JD. Binding site stoichiometry and the effects of phosphorylation on human α1 homomeric glycine receptors. J Physiol. 2002;544:97–106. doi: 10.1113/jphysiol.2001.015321. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 138.Harvey RJ, Depner UB, Wassle H, et al. Gly R α3: an essential target for spinal PGE2-mediated inflammatory pain sensitization. Science. 2004;304:884–887. doi: 10.1126/science.1094925. [DOI] [PubMed] [Google Scholar]
- 139.Lynch JW, Callister RJ. Glycine receptors: a new therapeutic target in pain pathways. Curr Opin Investig Drugs. 2006;7:48–53. [PubMed] [Google Scholar]
- 140.Laube B, Maksay G, Schemm R, Betz H. Modulation of glycine receptor function: a novel approach for therapeutic intervention at inhibitory synapses? Trends Pharmacol Sci. 2002;23:519–527. doi: 10.1016/S0165-6147(02)02138-7. [DOI] [PubMed] [Google Scholar]
- 141.Birch PJ, Dekker LV, James IF, Southan A, Cronk D. Strategies to identify ion channel modulators: current and novel approaches to target neuropathic pain. Drug Discov Today. 2004;9:410–418. doi: 10.1016/S1359-6446(04)03043-0. [DOI] [PubMed] [Google Scholar]
