"Gly" redirects here. For the unit of measurement, see light-year. For the plant genus, see Glycine (plant).
Glycine[1]
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| Names |
| Preferred IUPAC name
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| Systematic IUPAC name
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| Other names
Aminoacetic acid
Glycocoll
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| Identifiers |
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CAS Number
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3D model (JSmol)
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| Abbreviations |
Gly, G |
| ChEBI |
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| ChemSpider |
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| DrugBank |
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| ECHA InfoCard |
100.000.248 |
| EC Number |
200-272-2 |
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IUPHAR/BPS
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| KEGG |
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| UNII |
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InChI
-
InChI=1S/C2H5NO2/c3-1-2(4)5/h1,3H2,(H,4,5) Y
Key: DHMQDGOQFOQNFH-UHFFFAOYSA-N Y
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InChI=1/C2H5NO2/c3-1-2(4)5/h1,3H2,(H,4,5)
Key: DHMQDGOQFOQNFH-UHFFFAOYAW
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| Properties |
|
Chemical formula
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C2H5NO2 |
| Molar mass |
75.07 g/mol |
| Appearance |
white solid |
| Density |
1.607 g/cm3 |
| Melting point |
233 °C (451 °F; 506 K) (decomposition) |
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Solubility in water
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24.99 g/100 mL (25 °C)[2] |
| Solubility |
soluble in pyridine
sparingly soluble in ethanol
insoluble in ether |
| Acidity (pKa) |
2.34 (carboxyl), 9.6 (amino)[3] |
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Magnetic susceptibility (χ)
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-40.3·10−6 cm3/mol |
| Pharmacology |
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ATC code
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B05CX03 (WHO) |
| Hazards |
| Safety data sheet |
See: data page |
| Lethal dose or concentration (LD, LC): |
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LD50 (median dose)
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2600 mg/kg (mouse, oral) |
| Supplementary data page |
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Structure and
properties
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Refractive index (n),
Dielectric constant (εr), etc. |
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Thermodynamic
data
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Phase behaviour
solid–liquid–gas |
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Spectral data
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UV, IR, NMR, MS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Y verify (what is YN ?) |
| Infobox references |
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Glycine (abbreviated as Gly or G) is the amino acid that has a single hydrogen atom as its side chain. It is the simplest possible amino acid. The chemical formula of glycine is NH2‐CH2‐COOH. Glycine is one of the proteinogenic amino acids. In the genetic code, all codons starting with GG, namely GGU, GGC, GGA, GGG, code for glycine.
Glycine is a colorless, sweet-tasting crystalline solid. It is the only achiral proteinogenic amino acid. It can fit into hydrophilic or hydrophobic environments, due to its minimal side chain of only one hydrogen atom. The acyl radical is glycyl.
Glycine is a white crystalline solid
Contents
- 1 History and etymology
- 2 Production
- 3 Acid-base properties
- 4 Metabolism
- 4.1 Biosynthesis
- 4.2 Degradation
- 5 Physiological function
- 5.1 As a biosynthetic intermediate
- 5.2 As a neurotransmitter
- 6 Uses
- 6.1 Animal and human foods
- 6.2 Cosmetics and miscellaneous applications
- 6.3 Chemical feedstock
- 6.4 Laboratory research
- 7 Presence in space
- 8 See also
- 9 References
- 10 Further reading
- 11 External links
History and etymology
Glycine was discovered in 1820 by Henri Braconnot when he hydrolyzed gelatin by boiling it with sulfuric acid.[4] He originally called it "sugar of gelatin",[5] but a student of Liebig showed that it contained Nitrogen, and Berzelius renamed it "glycine".[6] The name comes from the Greek word γλυκύς "sweet tasting"[7] (which is also related to the prefixes glyco- and gluco-, as in glycoprotein and glucose). Another early name for glycine was "glycocoll".[8]
Production
Although glycine can be isolated from hydrolyzed protein, this is not used for industrial production, as it can be manufactured more conveniently by chemical synthesis.[9] The two main processes are amination of chloroacetic acid with ammonia, giving glycine and ammonium chloride,[10] and the Strecker amino acid synthesis,[11] which is the main synthetic method in the United States and Japan.[12] About 15 thousand tonnes are produced annually in this way.[13]
Glycine is also cogenerated as an impurity in the synthesis of EDTA, arising from reactions of the ammonia coproduct.[14]
Acid-base properties
In aqueous solution, glycine itself is amphoteric: at low pH the molecule can be protonated with a pKa of about 2.4 and at high pH it loses a proton with a pKa of about 9.6 (precise values of pKa depend on temperature and ionic strength).
Metabolism
Biosynthesis
Glycine is not essential to the human diet, as it is biosynthesized in the body from the amino acid serine, which is in turn derived from 3-phosphoglycerate, but the metabolic capacity for glycine biosynthesis does not satisfy the need for collagen synthesis.[15] In most organisms, the enzyme serine hydroxymethyltransferase catalyses this transformation via the cofactor pyridoxal phosphate:[16]
- serine + tetrahydrofolate → glycine + N5,N10-Methylene tetrahydrofolate + H2O
In the liver of vertebrates, glycine synthesis is catalyzed by glycine synthase (also called glycine cleavage enzyme). This conversion is readily reversible:[16]
- CO2 + NH+
4 + N5,N10-Methylene tetrahydrofolate + NADH + H+ ⇌ Glycine + tetrahydrofolate + NAD+
Degradation
Glycine is degraded via three pathways. The predominant pathway in animals and plants is the reverse of the glycine synthase pathway mentioned above. In this context, the enzyme system involved is usually called the glycine cleavage system:[16]
- Glycine + tetrahydrofolate + NAD+ ⇌ CO2 + NH+
4 + N5,N10-Methylene tetrahydrofolate + NADH + H+
In the second pathway, glycine is degraded in two steps. The first step is the reverse of glycine biosynthesis from serine with serine hydroxymethyl transferase. Serine is then converted to pyruvate by serine dehydratase.[16]
In the third pathway of glycine degradation, glycine is converted to glyoxylate by D-amino acid oxidase. Glyoxylate is then oxidized by hepatic lactate dehydrogenase to oxalate in an NAD+-dependent reaction.[16]
The half-life of glycine and its elimination from the body varies significantly based on dose.[17] In one study, the half-life varied between 0.5 and 4.0 hours.[17]
Physiological function
The principal function of glycine is as a precursor to proteins. Most proteins incorporate only small quantities of glycine, a notable exception being collagen, which contains about 35% glycine due to its periodically repeated role in the formation of collagen's helix structure in conjunction with hydroxyproline.[16][18] In the genetic code, glycine is coded by all codons starting with GG, namely GGU, GGC, GGA and GGG.
As a biosynthetic intermediate
In higher eukaryotes, δ-aminolevulinic acid, the key precursor to porphyrins, is biosynthesized from glycine and succinyl-CoA by the enzyme ALA synthase. Glycine provides the central C2N subunit of all purines.[16]
As a neurotransmitter
Glycine is an inhibitory neurotransmitter in the central nervous system, especially in the spinal cord, brainstem, and retina. When glycine receptors are activated, chloride enters the neuron via ionotropic receptors, causing an Inhibitory postsynaptic potential (IPSP). Strychnine is a strong antagonist at ionotropic glycine receptors, whereas bicuculline is a weak one. Glycine is a required co-agonist along with glutamate for NMDA receptors. In contrast to the inhibitory role of glycine in the spinal cord, this behaviour is facilitated at the (NMDA) glutamatergic receptors which are excitatory.[19] The LD50 of glycine is 7930 mg/kg in rats (oral),[20] and it usually causes death by hyperexcitability.
Uses
In the US, glycine is typically sold in two grades: United States Pharmacopeia (“USP”), and technical grade. USP grade sales account for approximately 80 to 85 percent of the U.S. market for glycine. Where the customer’s purity requirements exceed the minimum required under the USP standard, for example for some pharmaceutical applications such as intravenous injections, pharmaceutical grade glycine, often produced to proprietary specifications and typically sold at a premium over USP grade glycine, may be used. Technical grade glycine, which may or may not meet USP grade standards, is sold at a lower price for use in industrial applications; e.g., as an agent in metal complexing and finishing.[21]
Animal and human foods
USP glycine has a wide variety of uses, including as an additive in pet food and animal feed, in foods and pharmaceuticals as a sweetener/taste enhancer, or as a component of food supplements and protein drinks.
Two glycine molecules in a dipeptide form (Diglycinate) are sometimes used as a way to enhance the absorption of mineral supplementation since, only when bound to a dipeptide, can be absorbed through a different set of transporters.[22]
Cosmetics and miscellaneous applications
Glycine serves as a buffering agent in antacids, analgesics, antiperspirants, cosmetics, and toiletries.
A variety of industrial and chemical processes use glycine or its derivatives, such as the production of fertilizers and metal complexing agents.[23]
Chemical feedstock
Glycine is an intermediate in the synthesis of a variety of chemical products. It is used in the manufacture of the herbicide glyphosate.[24]
Laboratory research
Glycine is a significant component of some solutions used in the SDS-PAGE method of protein analysis. It serves as a buffering agent, maintaining pH and preventing sample damage during electrophoresis. Glycine is also used to remove protein-labeling antibodies from Western blot membranes to enable the probing of numerous proteins of interest from SDS-PAGE gel. This allows more data to be drawn from the same specimen, increasing the reliability of the data, reducing the amount of sample processing, and number of samples required. This process is known as stripping.
Presence in space
The presence of glycine outside the earth was confirmed in 2009, based on the analysis of samples that had been taken in 2004 by the NASA spacecraft Stardust from comet Wild 2 and subsequently returned to earth. Glycine had previously been identified in the Murchison meteorite in 1970.[25] The discovery of cometary glycine bolstered the theory of panspermia, which claims that the "building blocks" of life are widespread throughout the Universe.[26] In 2016, detection of glycine within Comet 67P/Churyumov-Gerasimenko by the Rosetta spacecraft was announced.[27]
The detection of glycine outside the solar system in the interstellar medium has been debated.[28] In 2008, the Max Planck Institute for Radio Astronomy discovered the glycine-like molecule aminoacetonitrile in the Large Molecule Heimat, a giant gas cloud near the galactic center in the constellation Sagittarius.[29]
See also
- Trimethylglycine
- Amino acid neurotransmitter
References
- ^ The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (11th ed.), Merck, 1989, ISBN 091191028X , 4386.
- ^ "Solubilities and densities". Prowl.rockefeller.edu. Retrieved 2013-11-13.
- ^ Dawson, R.M.C., et al., Data for Biochemical Research, Oxford, Clarendon Press, 1959.
- ^ R.H.A. Plimmer (1912) [1908]. R.H.A. Plimmer; F.G. Hopkins, eds. The chemical composition of the proteins. Monographs on biochemistry. Part I. Analysis (2nd ed.). London: Longmans, Green and Co. p. 82. Retrieved January 18, 2010.
- ^ MacKenzie, Colin (1822). One Thousand Experiments in Chemistry: With Illustrations of Natural Phenomena; and Practical Observations on the Manufacturing and Chemical Processes at Present Pursued in the Successful Cultivation of the Useful Arts .. Sir R. Phillips and Company.
- ^ Nye, Mary Jo (1999). Before Big Science: The Pursuit of Modern Chemistry and Physics, 1800-1940. Harvard University Press. ISBN 9780674063822.
- ^ "glycine". Oxford Dictionaries. Retrieved 2015-12-06.
- ^ Ihde, Aaron J. (1970). The Development of Modern Chemistry. Courier Corporation. ISBN 9780486642352.
- ^ Okafor, Nduka (2016-03-09). Modern Industrial Microbiology and Biotechnology. CRC Press. ISBN 9781439843239.
- ^ Ingersoll, A. W.; Babcock, S. H. (1932). "Hippuric acid". Organic Syntheses. 12: 40. ; Collective Volume, 2, p. 328
- ^ Wiley (2007-12-14). Kirk-Othmer Food and Feed Technology, 2 Volume Set. John Wiley & Sons. ISBN 9780470174487.
- ^ "Glycine Conference (prelim)". USITC. Archived from the original on 2012-02-22. Retrieved 2014-06-13.
- ^ Drauz, Karlheinz; Grayson, Ian; Kleemann, Axel; Krimmer, Hans-Peter; Leuchtenberger, Wolfgang and Weckbecker, Christoph (2007) "Amino Acids" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. doi:10.1002/14356007.a02_057.pub2
- ^ Hart, J. Roger (2005) "Ethylenediaminetetraacetic Acid and Related Chelating Agents" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. doi:10.1002/14356007.a10_095
- ^ Meléndez-Hevia, E; De Paz-Lugo, P; Cornish-Bowden, A; Cárdenas, M. L. (December 2009). "A weak link in metabolism: the metabolic capacity for glycine biosynthesis does not satisfy the need for collagen synthesis". Journal of biosciences. 34 (6): 853–72. doi:10.1007/s12038-009-0100-9. PMID 20093739.
- ^ a b c d e f g Nelson, David L.; Cox, Michael M. (2005), Principles of Biochemistry (4th ed.), New York: W. H. Freeman, pp. 127, 675–77, 844, 854, ISBN 0-7167-4339-6
- ^ a b Hahn RG (1993). "Dose-dependent half-life of glycine". Urological Research. 21 (4): 289–291. doi:10.1007/BF00307714. PMID 8212419.
- ^ Szpak, Paul (2011). "Fish bone chemistry and ultrastructure: implications for taphonomy and stable isotope analysis". Journal of Archaeological Science. 38 (12): 3358–3372. doi:10.1016/j.jas.2011.07.022.
- ^ "Recent development in NMDA receptors". Chinese Medical Journal. 2000.
- ^ "Safety (MSDS) data for glycine". The Physical and Theoretical Chemistry Laboratory Oxford University. 2005. Retrieved 2006-11-01.
- ^ "Glycine From Japan and Korea" (PDF). U.S. International Trade Commission. January 2008. Retrieved 2014-06-13.
- ^ Kurtis, Frank,; Kamal, Patel,; Gregory, Lopez,; Bill, Willis, (2017-08-01). "Glycine Research Analysis". Examine.com.
- ^ "Notice of Preliminary Determination of Sales at Less Than Fair Value: Glycine From India" Federal Register 72 (7 November 2007): 62827.
- ^ Stahl, Shannon S.; Alsters, Paul L. (2016-07-13). Liquid Phase Aerobic Oxidation Catalysis: Industrial Applications and Academic Perspectives. John Wiley & Sons. ISBN 9783527690152.
- ^ Kvenvolden, Keith A.; Lawless, James; Pering, Katherine; Peterson, Etta; Flores, Jose; Ponnamperuma, Cyril; Kaplan, Isaac R.; Moore, Carleton (1970). "Evidence for extraterrestrial amino-acids and hydrocarbons in the Murchison meteorite". Nature. 228 (5275): 923–926. Bibcode:1970Natur.228..923K. doi:10.1038/228923a0. PMID 5482102.
- ^ Reuters (18 August 2009). "Building block of life found on comet - Thomson Reuters 2009". Retrieved 2009-08-18.
- ^ European Space Agency (27 May 2016). "Rosetta's comet contains ingredients for life". Retrieved 2016-06-05.
- ^ Snyder LE, Lovas FJ, Hollis JM, et al. (2005). "A rigorous attempt to verify interstellar glycine". Astrophys J. 619 (2): 914–930. arXiv:astro-ph/0410335 . Bibcode:2005ApJ...619..914S. doi:10.1086/426677.
- ^ Staff. "Organic Molecule, Amino Acid-Like, Found In Constellation Sagittarius 27 March 2008 - Science Daily". Retrieved 2008-09-16.
Further reading
- Kuan YJ, Charnley SB, Huang HC, et al. (2003). "Interstellar glycine". Astrophys J. 593 (2): 848–867. Bibcode:2003ApJ...593..848K. doi:10.1086/375637.
- Rachel Nowak. "Amino acid found in deep space - 18 July 2002 - New Scientist". Retrieved 2007-07-01.
External links
|
Wikimedia Commons has media related to Glycine. |
- Glycine MS Spectrum
- Glycine at PDRHealth.com
- Glycine cleavage system
- Glycine Therapy - A New Direction for Schizophrenia Treatment?
- "Organic Molecule, Amino Acid-Like, Found In Constellation Sagittarius". ScienceDaily. 27 March 2008.
- Guochuan E. Tsai (1 December 2008). "A New Class of Antipsychotic Drugs: Enhancing Neurotransmission Mediated by NMDA Receptors". Psychiatric Times. 25 (14).
- ChemSub Online (Glycine).
- NASA scientists have discovered glycine, a fundamental building block of life, in samples of comet Wild 2 returned by NASA's Stardust spacecraft.
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The encoded amino acid
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| General topics |
- Protein
- Peptide
- Genetic code
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|
| By properties |
| Aliphatic |
- Branched-chain amino acids (Valine
- Isoleucine
- Leucine)
- Methionine
- Alanine
- Proline
- Glycine
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| Aromatic |
- Phenylalanine
- Tyrosine
- Tryptophan
- Histidine
|
| Polar, uncharged |
- Asparagine
- Glutamine
- Serine
- Threonine
|
| Positive charge (pKa) |
- Lysine (≈10.8)
- Arginine (≈12.5)
- Histidine (≈6.1)
|
| Negative charge (pKa) |
- Aspartic acid (≈3.9)
- Glutamic acid (≈4.1)
- Cysteine (≈8.3)
- Tyrosine (≈10.1)
|
|
| Other classifications |
- Essential amino acid
- Ketogenic amino acid
- Glucogenic amino acid
- Non-proteinogenic amino acid
|
|
Amino acid metabolism metabolic intermediates
|
| K→acetyl-CoA |
| lysine→ |
- Saccharopine
- Allysine
- α-Aminoadipic acid
- α-Ketoadipate
- Glutaryl-CoA
- Glutaconyl-CoA
- Crotonyl-CoA
- β-Hydroxybutyryl-CoA
|
| leucine→ |
- β-Hydroxy β-methylbutyric acid
- β-Hydroxy β-methylbutyryl-CoA
- Isovaleryl-CoA
- α-Ketoisocaproic acid
- β-Ketoisocaproic acid
- β-Ketoisocaproyl-CoA
- β-Leucine
- β-Methylcrotonyl-CoA
- β-Methylglutaconyl-CoA
- β-Hydroxy β-methylglutaryl-CoA
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| tryptophan→alanine→ |
- N'-Formylkynurenine
- Kynurenine
- Anthranilic acid
- 3-Hydroxykynurenine
- 3-Hydroxyanthranilic acid
- 2-Amino-3-carboxymuconic semialdehyde
- 2-Aminomuconic semialdehyde
- 2-Aminomuconic acid
- Glutaryl-CoA
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|
| G |
| G→pyruvate→citrate |
| glycine→serine→ |
- glycine→creatine: Glycocyamine
- Phosphocreatine
- Creatinine
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|
G→glutamate→
α-ketoglutarate |
| histidine→ |
- Urocanic acid
- Imidazol-4-one-5-propionic acid
- Formiminoglutamic acid
- Glutamate-1-semialdehyde
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| proline→ |
- 1-Pyrroline-5-carboxylic acid
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| arginine→ |
- Agmatine
- Ornithine
- Citrulline
- Cadaverine
- Putrescine
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| other |
- cysteine+glutamate→glutathione: γ-Glutamylcysteine
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|
G→propionyl-CoA→
succinyl-CoA |
| valine→ |
- α-Ketoisovaleric acid
- Isobutyryl-CoA
- Methacrylyl-CoA
- 3-Hydroxyisobutyryl-CoA
- 3-Hydroxyisobutyric acid
- 2-Methyl-3-oxopropanoic acid
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| isoleucine→ |
- 2,3-Dihydroxy-3-methylpentanoic acid
- 2-Methylbutyryl-CoA
- Tiglyl-CoA
- 2-Methylacetoacetyl-CoA
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| methionine→ |
- generation of homocysteine: S-Adenosyl methionine
- S-Adenosyl-L-homocysteine
- Homocysteine
- conversion to cysteine: Cystathionine
- alpha-Ketobutyric acid+Cysteine
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| threonine→ |
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| propionyl-CoA→ |
|
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| G→fumarate |
| phenylalanine→tyrosine→ |
- 4-Hydroxyphenylpyruvic acid
- Homogentisic acid
- 4-Maleylacetoacetic acid
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|
| G→oxaloacetate |
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| Other |
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Neurotransmitters
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| Amino acid-derived |
- Major excitatory/inhibitory systems: Glutamate system: Agmatine
- Aspartic acid (aspartate)
- Cycloserine
- Glutamic acid (glutamate)
- Glutathione
- Glycine
- GSNO
- GSSG
- Kynurenic acid
- NAA
- NAAG
- Proline
- Serine; GABA system: GABA
- GABOB
- GHB; Glycine system: α-Alanine
- β-Alanine
- Glycine
- Hypotaurine
- Proline
- Sarcosine
- Serine
- Taurine; GHB system: GHB
- T-HCA (GHC)
- Biogenic amines: Monoamines: 6-OHM
- Dopamine
- Epinephrine (adrenaline)
- NAS (normelatonin)
- Norepinephrine (noradrenaline)
- Serotonin (5-HT); Trace amines: 3-Iodothyronamine
- N-Methylphenethylamine
- N-Methyltryptamine
- m-Octopamine
- p-Octopamine
- Phenylethanolamine
- Phenethylamine
- Synephrine
- Tryptamine
- m-Tyramine
- p-Tyramine; Others: Histamine
- Neuropeptides: See here instead.
|
| Lipid-derived |
- Endocannabinoids: 2-AG
- 2-AGE (noladin ether)
- 2-ALPI
- 2-OG
- AA-5-HT
- Anandamide (AEA)
- DEA
- LPI
- NADA
- NAGly
- OEA
- Oleamide
- PEA
- RVD-Hpα
- SEA
- Virodhamine (O-AEA)
- Neurosteroids: See here instead.
|
| Nucleobase-derived |
- Nucleosides: Adenosine system: Adenosine
- ADP
- AMP
- ATP
|
| Vitamin-derived |
- Cholinergic system: Acetylcholine
|
| Miscellaneous |
- Gasotransmitters: Carbon monoxide (CO)
- Hydrogen sulfide (H2S)
- Nitric oxide (NO); Candidates: Acetaldehyde
- Ammonia (NH3)
- Carbonyl sulfide (COS)
- Nitrous oxide (N2O)
- Sulfur dioxide (SO2)
|
|
Glycine receptor modulators
|
Receptor
(ligands) |
| GlyR |
- Agonists: β-Alanine
- β-ABA (BABA)
- β-AIBA
- Caesium
- D-Alanine
- D-Serine
- GABA
- Glycine
- Hypotaurine
- Ivermectin
- L-Alanine
- L-Proline
- L-Serine
- L-Threonine
- MDL-27531
- Milacemide
- Picolinic acid
- Propofol
- Quisqualamine
- Sarcosine
- Taurine
- Positive modulators: Alcohols (e.g., brometone, chlorobutanol (chloretone), ethanol (alcohol), tert-butanol (2M2P), tribromoethanol, trichloroethanol, trifluoroethanol)
- Alkylbenzene sulfonate
- Anandamide
- Barbiturates (e.g., pentobarbital, sodium thiopental)
- Chlormethiazole
- D12-116
- Dihydropyridines (e.g., nicardipine)
- Etomidate
- Ginseng constituents (e.g., ginsenosides (e.g., ginsenoside-Rf))
- Glutamic acid (glutamate)
- Ivermectin
- Ketamine
- Neuroactive steroids (e.g., alfaxolone, pregnenolone (eltanolone), pregnenolone acetate, minaxolone, ORG-20599)
- Nitrous oxide
- Penicillin G
- Propofol
- Tamoxifen
- Tetrahydrocannabinol
- Triclofos
- Tropeines (e.g., atropine, bemesetron, cocaine, LY-278584, tropisetron, zatosetron)
- Volatiles/gases (e.g., chloral hydrate, chloroform, desflurane, diethyl ether (ether), enflurane, halothane, isoflurane, methoxyflurane, sevoflurane, toluene, trichloroethane (methyl chloroform), trichloroethylene)
- Xenon
- Zinc
- Antagonists: 2-Aminostrychnine
- 2-Nitrostrychnine
- 4-Phenyl-4-formyl-N-methylpiperidine
- αEMBTL
- Bicuculline
- Brucine
- Cacotheline
- Caffeine
- Colchicine
- Colubrine
- Cyanotriphenylborate
- Dendrobine
- Diaboline
- Endocannabinoids (e.g., 2-AG, anandamide (AEA))
- Gaboxadol (THIP)
- Gelsemine
- iso-THAZ
- Isobutyric acid
- Isonipecotic acid
- Isostrychnine
- Laudanosine
- N-Methylbicuculline
- N-Methylstrychnine
- N,N-Dimethylmuscimol
- Nipecotic acid
- Pitrazepin
- Pseudostrychnine
- Quinolines (e.g., 4-hydroxyquinoline, 4-hydroxyquinoline-3-carboxylic acid, 5,7-CIQA, 7-CIQ, 7-TFQ, 7-TFQA)
- RU-5135
- Sinomenine
- Strychnine
- Thiocolchicoside
- Tutin
- Negative modulators: Amiloride
- Benzodiazepines (e.g., bromazepam, clonazepam, diazepam, flunitrazepam, flurazepam)
- Corymine
- Cyanotriphenylborate
- Daidzein
- Dihydropyridines (e.g., nicardipine, nifedipine, nitrendipine)
- Furosemide
- Genistein
- Ginkgo constituents (e.g., bilobalide, ginkgolides (e.g., ginkgolide A, ginkgolide B, ginkgolide C, ginkgolide J, ginkgolide M))
- Imipramine
- NBQX
- Neuroactive steroids (e.g., 3α-androsterone sulfate, 3β-androsterone sulfate, deoxycorticosterone, DHEA sulfate, pregnenolone sulfate, progesterone)
- Opioids (e.g., codeine, dextromethorphan, dextrorphan, levomethadone, levorphanol, morphine, oripavine, pethidine, thebaine)
- Picrotoxin (i.e., picrotin and picrotoxinin)
- PMBA
- Riluzole
- Tropeines (e.g., bemesetron, LY-278584, tropisetron, zatosetron)
- Verapamil
- Zinc
|
| NMDAR |
|
|
Transporter
(blockers) |
| GlyT1 |
- ACPPB
- ALX-1393
- ALX-5407 (NFPS)
- AMG-747
- ASP2535
- Bitopertin (RG1678/RO4917838)
- CP-802079
- Ethanol (alcohol)
- Glycyldodecylamide
- GSK1018921
- LY-2365109
- ORG-24598
- ORG-25935 (SCH-900435)
- PF-02545920
- PF-03463275
- PF-04958242
- Sarcosine
- SSR-103,800
- SSR-504,734
|
| GlyT2 |
- Amoxapine
- Ethanol (alcohol)
- NAGly
- Opiranserin (VVZ-149)
- ORG-25543
- VVZ-368
|
|
- See also
- Receptor/signaling modulators
- GABA receptor modulators
- GABAA receptor positive modulators
- Ionotropic glutamate receptor modulators
|
|
Molecules detected in outer space
|
| Molecules |
|
Deuterated
molecules |
- Ammonia
- Ammonium ion
- Formaldehyde
- Formyl radical
- Heavy water
- Hydrogen cyanide
- Hydrogen deuteride
- Hydrogen isocyanide
- Methylacetylene
- N2D+
- Trihydrogen cation
|
| Unconfirmed |
- Anthracene
- Dihydroxyacetone
- Ethyl methyl ether
- Glycine
- Graphene
- H2NCO+
- Linear C5
- Naphthalene cation
- Phosphine
- Pyrene
- Silylidine
|
| Related |
- Abiogenesis
- Astrobiology
- Astrochemistry
- Atomic and molecular astrophysics
- Chemical formula
- Circumstellar envelope
- Cosmic dust
- Cosmic ray
- Cosmochemistry
- Diffuse interstellar band
- Earliest known life forms
- Extraterrestrial life
- Extraterrestrial liquid water
- Forbidden mechanism
- Helium hydride ion
- Homochirality
- Intergalactic dust
- Interplanetary medium
- Interstellar medium
- Photodissociation region
- Iron–sulfur world theory
- Kerogen
- Molecules in stars
- Nexus for Exoplanet System Science
- Organic compound
- Outer space
- PAH world hypothesis
- Panspermia
- Polycyclic aromatic hydrocarbon (PAH)
- RNA world hypothesis
- Spectroscopy
- Tholin
|
- Book:Chemistry
- Category:Astrochemistry
- Category:Molecules
- Portal:Astrobiology
- Portal:Astronomy
- Portal:Chemistry
|