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Methylation

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667: 890: 612: 640: 920: 133: 934: 237: 382:, DNA methylation is associated with alternative splicing and gene regulation based on functional genomic research published in 2013. In addition, DNA methylation is associated with expression changes in immune genes when honey bees were under lethal viral infection. Several review papers have been published on the topics of DNA methylation in social insects. 375:. One to two percent of the human genome are CpG clusters, and there is an inverse relationship between CpG methylation and transcriptional activity. Methylation contributing to epigenetic inheritance can occur through either DNA methylation or protein methylation. Improper methylations of human genes can lead to disease development, including cancer. 497:
Methyl metabolism is very ancient and can be found in all organisms on earth, from bacteria to humans, indicating the importance of methyl metabolism for physiology. Indeed, pharmacological inhibition of global methylation in species ranging from human, mouse, fish, fly, roundworm, plant, algae, and
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is the most common and abundant methylation modification in RNA molecules (mRNA) present in eukaryotes. 5-methylcytosine (5-mC) also commonly occurs in various RNA molecules. Recent data strongly suggest that m6A and 5-mC RNA methylation affects the regulation of various biological processes such as
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Fustin, Jean-Michel; Ye, Shiqi; Rakers, Christin; Kaneko, Kensuke; Fukumoto, Kazuki; Yamano, Mayu; Versteven, Marijke; GrĂĽnewald, Ellen; Cargill, Samantha J.; Tamai, T. Katherine; Xu, Yao; Jabbur, Maria LuĂ­sa; Kojima, Rika; Lamberti, Melisa L.; Yoshioka-Kobayashi, Kumiko; Whitmore, David; Tammam,
213:, methylation is a major biochemical process for modifying protein function. The most prevalent protein methylations affect arginine and lysine residue of specific histones. Otherwise histidine, glutamate, asparagine, cysteine are susceptible to methylation. Some of these products include 1508:
Rotondo JC, Borghi A, Selvatici R, Magri E, Bianchini E, Montinari E, Corazza M, Virgili A, Tognon M, Martini F (2016). "Hypermethylation-Induced Inactivation of the IRF6 Gene as a Possible Early Event in Progression of Vulvar Squamous Cell Carcinoma Associated With Lichen Sclerosus".
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Styblo, M.; Del Razo, L. M.; Vega, L.; Germolec, D. R.; LeCluyse, E. L.; Hamilton, G. A.; Reed, W.; Wang, C.; Cullen, W. R.; Thomas, D. J. (2000). "Comparative toxicity of trivalent and pentavalent inorganic and methylated arsenicals in rat and human cells".
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Tundo, Pietro; Selva, Maurizio; Bomben, Andrea (1999). "Mono-C-methylathion of arylacetonitriles and methyl arylacetates by dimethyl carbonate: a general method for the synthesis of pure 2-arylpropionic acids. 2-Phenylpropionic acid".
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In methylcobalamin-dependent forms of the enzyme, the reaction proceeds by two steps in a ping-pong reaction. The enzyme is initially primed into a reactive state by the transfer of a methyl group from N-MeTHF to Co(I) in enzyme-bound
421:, and viral RNA. Different catalytic strategies are employed for RNA methylation by a variety of RNA-methyltransferases. RNA methylation is thought to have existed before DNA methylation in the early forms of life evolving on earth. 1194:
Matthews, R. G.; Smith, A. E.; Zhou, Z. S.; Taurog, R. E.; Bandarian, V.; Evans, J. C.; Ludwig, M. (2003). "Cobalamin-Dependent and Cobalamin-Independent Methionine Synthases: Are There Two Solutions to the Same Chemical Problem?".
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Li-Byarlay, Hongmei; Li, Yang; Stroud, Hume; Feng, Suhua; Newman, Thomas C.; Kaneda, Megan; Hou, Kirk K.; Worley, Kim C.; Elsik, Christine G.; Wickline, Samuel A.; Jacobsen, Steven E.; Ma, Jian; Robinson, Gene E. (30 July 2013).
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in the DNA sequence). In mammals, DNA methylation is common in body cells, and methylation of CpG sites seems to be the default. Human DNA has about 80–90% of CpG sites methylated, but there are certain areas, known as
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Choi, Junhong; Ieong, Ka-Weng; Demirci, Hasan; Chen, Jin; Petrov, Alexey; Prabhakar, Arjun; O'Leary, Seán E; Dominissini, Dan; Rechavi, Gideon; Soltis, S Michael; Ehrenberg, Måns; Puglisi, Joseph D (February 2016).
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Lister R, Pelizzola M, Dowen RH, Hawkins RD, Hon G, Tonti-Filippini J, Nery JR, Lee L, Ye Z, Ngo QM, Edsall L, Antosiewicz-Bourget J, Stewart R, Ruotti V, Millar AH, Thomson JA, Ren B, Ecker JR (November 2009).
266:(THF) while transferring a methyl group to Hcy to form Met. Methionine Syntheses can be cobalamin-dependent and cobalamin-independent: Plants have both, animals depend on the methylcobalamin-dependent form. 2350:
Poon, Kevin W. C.; Albiniak, Philip A.; Dudley, Gregory B. (2007). "Protection of alcohols using 2-benzyloxy-1-methylpyridinium trifluoromethanesulfanonate: Methyl (R)-(-)-3-benzyloxy-2-methyl propanoate".
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In biological systems, methylation is accomplished by enzymes. Methylation can modify heavy metals and can regulate gene expression, RNA processing, and protein function. It is a key process underlying
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Nakayama, Jun-ichi; Rice, Judd C.; Strahl, Brian D.; Allis, C. David; Grewal, Shiv I. S. (6 April 2001). "Role of Histone H3 Lysine 9 Methylation in Epigenetic Control of Heterochromatin Assembly".
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to form a reactive thiolate reacts with the Me-Cob. The activated methyl group is transferred from Me-Cob to the Hcy thiolate, which regenerates Co(I) in Cob, and Met is released from the enzyme.
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Stephanie; Howell, P. Lynne; Kageyama, Ryoichiro; Matsuo, Takuya; Stanewsky, Ralf; Golombek, Diego A.; Johnson, Carl Hirschie; Kakeya, Hideaki; van Ooijen, Gerben; Okamura, Hitoshi (6 May 2020).
458: 274:((Cob), also known as vitamine B12)) , , forming methyl-cobalamin(Me-Cob) that now contains Me-Co(III) and activating the enzyme. Then, a Hcy that has coordinated to an enzyme-bound 462: 3302: 1653:
Li-Byarlay, Hongmei; Boncristiani, Humberto; Howell, Gary; Herman, Jake; Clark, Lindsay; Strand, Micheline K.; Tarpy, David; Rueppell, Olav (24 September 2020).
1410:"Methylation loss at H19 imprinted gene correlates with methylenetetrahydrofolate reductase gene promoter hypermethylation in semen samples from infertile males" 453:
residues in the protein sequence. Arginine can be methylated once (monomethylated arginine) or twice, with either both methyl groups on one terminal nitrogen (
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Stadler MB, Murr R, Burger L, Ivanek R, Lienert F, Schöler A, van Nimwegen E, Wirbelauer C, Oakeley EJ, Gaidatzis D, Tiwari VK, Schübeler D (December 2011).
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Nenad, Maraš; Polanc, Slovenko; Kočevar, Marijan (2008). "Microwave-assisted methylation of phenols with tetramethylammonium chloride in the presence of K
3364: 2661: 1459:"Methylenetetrahydrofolate reductase gene promoter hypermethylation in semen samples of infertile couples correlates with recurrent spontaneous abortion" 431:
In social insects such as honey bees, RNA methylation is studied as a possible epigenetic mechanism underlying aggression via reciprocal crosses.
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cyanobacteria causes the same effects on their biological rhythms, demonstrating conserved physiological roles of methylation during evolution.
3129: 3119: 1872: 1900:"Examining parent-of-origin effects on transcription and RNA methylation in mediating aggressive behavior in honey bees (Apis mellifera)" 129:, involves a series of methylation reactions. These reactions are caused by a set of enzymes harbored by a family of anaerobic microbes. 1898:
Bresnahan, Sean T.; Lee, Ellen; Clark, Lindsay; Ma, Rong; Rangel, Juliana; Grozinger, Christina M.; Li-Byarlay, Hongmei (12 June 2023).
1546:"Association of Retinoic Acid Receptor β Gene With Onset and Progression of Lichen Sclerosus-Associated Vulvar Squamous Cell Carcinoma" 2554:
Negishi, Ei-ichi; Matsushita, Hajime (1984). "Palladium-Catalyzed Synthesis of 1,4-Dienes by Allylation of Alkenyalane: α-Farnesene".
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Timmers, Peer H. A.; Welte, Cornelia U.; Koehorst, Jasper J.; Plugge, Caroline M.; Jetten, Mike S. M.; Stams, Alfons J. M. (2017).
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Thauer, R. K., "Biochemistry of Methanogenesis: a Tribute to Marjory Stephenson", Microbiology, 1998, volume 144, pages 2377-2406.
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Rotondo JC, Bosi S, Bazzan E, Di Domenico M, De Mattei M, Selvatici R, Patella A, Marci R, Tognon M, Martini F (December 2012).
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Biomethylation is the pathway for converting some heavy elements into more mobile or more lethal derivatives that can enter the
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Rotondo JC, Borghi A, Selvatici R, Mazzoni E, Bononi I, Corazza M, Kussini J, Montinari E, GafĂ  R, Tognon M, Martini F (2018).
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Tost J (2010). "DNA methylation: an introduction to the biology and the disease-associated changes of a promising biomarker".
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Lipsky, Sharon D.; Hall, Stan S. (1976). "Aromatic Hydrocarbons from aromatic ketones and aldehydes: 1,1-Diphenylethane".
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RNA stability and mRNA translation, and that abnormal RNA methylation contributes to etiology of human diseases.
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Icke, Roland N.; Redemann, Ernst; Wisegarver, Burnett B.; Alles, Gordon A. (1949). "m-Methoxybenzaldehyde".
3324: 1596:"RNA interference knockdown of DNA methyl-transferase 3 affects gene alternative splicing in the honey bee" 548: 306:
is the methyl donor. The methanearsonates are the precursors to dimethylarsonates, again by the cycle of
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Ragsdale, Stephen W. (2008). "Catalysis of Methyl Group Transfers Involving Tetrahydrofolate and B12".
687: 2775: 2670: 964: 955:– the biochemical method used to determine the presence or absence of methyl groups on a DNA sequence 568: 478: 830:
The method offers the advantage that the side products are easily removed from the product mixture.
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Icke, Roland N.; Wisegarver, Burnett B.; Alles, Gordon A. (1945). "β-Phenylethyldimethylamine".
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Rotondo JC, Selvatici R, Di Domenico M, Marci R, Vesce F, Tognon M, Martini F (September 2013).
639: 1876: 1950: 3217: 474: 343: 310:(to methylarsonous acid) followed by a second methylation. Related pathways are found in the 171: 31: 1655:"Transcriptomic and Epigenomic Dynamics of Honey Bees in Response to Lethal Viral Infection" 1458: 1145:"The ribosome: A hot spot for the identification of new types of protein methyltransferases" 94: 3492: 3487: 2693: 2026: 1607: 1323: 952: 303: 8: 439: 368: 364: 247: 241: 194: 190: 186: 149: 2030: 1926: 1899: 1824:"N6-methyladenosine in mRNA disrupts tRNA selection and translation-elongation dynamics" 1611: 1327: 34:, or the substitution of an atom (or group) by a methyl group. Methylation is a form of 3023: 2873: 2607: 2582: 2140: 2113: 2088: 2061: 1848: 1823: 1798: 1771: 1681: 1654: 1630: 1595: 1570: 1545: 1434: 1409: 1344: 1311: 1291: 1248: 1171: 1144: 1068: 1020: 905: 619: 544: 424: 302:. Thus, trivalent inorganic arsenic compounds are methylated to give methanearsonate. 62: 2583:"Thermophoretic melting curves quantify the conformation and stability of RNA and DNA" 1049: 2977: 2863: 2822: 2612: 2480: 2198: 2176: 2145: 2093: 2042: 1999: 1958: 1931: 1853: 1803: 1750: 1686: 1635: 1575: 1526: 1490: 1439: 1390: 1349: 1283: 1240: 1176: 1073: 1053: 507: 372: 181:
Plants produce flavonoids and isoflavones with methylations on hydroxyl groups, i.e.
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Chemical process in which a methyl (CH3) group is covalently attached to a molecule
2476: 1772:"Reviving the RNA World: An Insight into the Appearance of RNA Methyltransferases" 551:. Less common but more powerful (and more dangerous) methylating reagents include 114:. Sources of methyl groups include S-methylmethionine, methyl folate, methyl B12. 3391: 3091: 2982: 2858: 2817: 2669: 1015: 1005: 552: 331: 299: 210: 78: 1746: 1312:"Human DNA methylomes at base resolution show widespread epigenomic differences" 1221: 3253: 3147: 3124: 3066: 2916: 2898: 2785: 2751: 2172: 1916: 1010: 939: 897: 660: 363:, that are CG-rich (high cytosine and guanine content, made up of about 65% CG 360: 291: 122: 86: 2336: 2130: 1995: 1671: 1279: 185:. This 5-O-methylation affects the flavonoid's water solubility. Examples are 3481: 3272: 3199: 3175: 3114: 3109: 3061: 3056: 3005: 2962: 2883: 2827: 2731: 2567: 2540: 2513: 2449: 2391: 2364: 2293: 2265: 2238: 2211: 1788: 1161: 970: 845: 315: 182: 98: 39: 2527:
Grummitt, Oliver; Becker, Ernest I. (1950). "trans-1-Phenyl-1,3-butadiene".
2114:"Methylation deficiency disrupts biological rhythms from bacteria to humans" 2038: 1722: 1705: 1620: 1475: 1369:"DNA-binding factors shape the mouse methylome at distal regulatory regions" 820:{\displaystyle {\ce {RCO2H + tmsCHN2 + CH3OH -> RCO2CH3 + CH3Otms + N2}}} 3071: 2888: 2703: 2688: 2616: 2149: 2097: 2078: 2046: 2003: 1935: 1857: 1807: 1690: 1639: 1579: 1530: 1494: 1443: 1394: 1353: 1287: 1244: 1208: 1180: 1118: 1101: 1077: 901: 683: 631: 623: 560: 556: 530: 485:
to repress or activate gene expression. Protein methylation is one type of
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Posttranslational Modification of Proteins: Expanding Nature's Inventory
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Vyas, G. N.; Shah, N. M. (1951). "Quninacetophenone monomethyl ether".
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Shioiri T, Aoyama T, Snowden T (2001). "Trimethylsilyldiazomethane".
1980:"Regulation of heterochromatin by histone methylation and small RNAs" 379: 339: 271: 206: 66: 43: 23: 2406: 2378:
Neeman, M.; Johnson, William S. (1961). "Cholestanyl methyl ether".
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methyl reagents. Strongly nucleophilic methylating agents include
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Physiological and Molecular Mechanisms of Nutrition in Honey Bees
995: 599: 466: 461:(PRMTs). Lysine can be methylated once, twice, or three times by 355: 295: 159: 155: 55: 3441: 1407: 3454: 3406: 3348: 3290: 3033: 2805: 1741:. Advances in Insect Physiology. Vol. 49. pp. 25–58. 958: 663:, which occurs when amines are methylated with methyl halides. 603: 470: 447: 414: 236: 175: 70: 678: 3099: 2770: 1543: 656: 588: 576: 418: 410: 406: 367:), wherein none is methylated. These are associated with the 307: 140:
In reverse methanogenesis, methane is the methylating agent.
1456: 457:) or one on both nitrogens (symmetric dimethylarginine), by 2251: 1507: 1308: 1044:. Vitamins & Hormones. Vol. 79. pp. 293–324. 481:. Histones that are methylated on certain residues can act 402: 398: 394: 275: 93:
methylation of tissue samples is also a way to reduce some
2163:"Aromatic Substitution, Nucleophilic and Organometallic". 2062:"Natural history of S-adenosylmethionine-binding proteins" 1099: 281: 1706:"The Function of DNA Methylation Marks in Social Insects" 813: 794: 778: 765: 746: 730: 711: 350:(cytosine-phosphate-guanine sites—that is, sites where a 162:
derivatives. This process, catalyzed by such enzymes as
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4-(p-hydroxybenzylidene)-5-imidazolinone (HBI) formation
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methylate carboxylic acids, phenols, and even alcohols:
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Kozbial, Piotr Z; Mushegian, Arcady R (December 2005).
2016: 1366: 1193: 2580: 1592: 346:. In vertebrates, DNA methylation typically occurs at 73:; such methylation can be involved in modification of 2469:
e-EROS Encyclopedia of Reagents for Organic Synthesis
1873:"Methylation (MTHFR) Testing & Folate Deficiency" 699: 2462: 2110: 1957:. Roberts and Company Publishers. pp. 121–149. 1820: 915: 2435: 1897: 465:. Protein methylation has been most studied in the 3365:p-Hydroxybenzylidene-imidazolinone (HBI) formation 2349: 2306: 819: 2636:Detection of Methylations after Mass Spectrometry 2553: 3479: 2278: 2059: 646: 1600:Proceedings of the National Academy of Sciences 622:is a specific for the methylation at oxygen of 136:Cycle for methanogenesis, showing intermediates 2581:Wienken CJ, Baaske P, Duhr S, Braun D (2011). 2526: 2465:Encyclopedia of Reagents for Organic Synthesis 1736: 2655: 2411:Journal of the Chemical Society, Transactions 2377: 602:may be methylated on carbon to produce a new 575:may be methylated on oxygen to give a methyl 477:to histones is catalyzed by enzymes known as 3325:Tryptophan tryptophylquinone (TTQ) formation 2404: 2010: 1537: 1501: 1450: 1401: 973:, the reversible removal of methyl group in 524: 125:, the process that generates methane from CO 1978:Grewal, Shiv IS; Rice, Judd C (June 2004). 1770:Rana, Ajay K.; Ankri, Serge (6 June 2016). 1259: 984: 833: 679:Diazomethane and trimethylsilyldiazomethane 514:process used to describe the delivery of a 166:, is a key reaction in the biosynthesis of 2662: 2648: 2499: 2398: 1977: 1971: 1703: 529:Methylations are commonly performed using 178:, a major structural component of plants. 2606: 2139: 2129: 2087: 2077: 1925: 1915: 1847: 1828:Nature Structural & Molecular Biology 1797: 1787: 1769: 1721: 1680: 1670: 1629: 1619: 1569: 1484: 1474: 1433: 1384: 1343: 1302: 1170: 1160: 1127: 1117: 1067: 371:of 56% of mammalian genes, including all 321: 2574: 2195: 1737:Wang, Ying; Li-Byarlay, Hongmei (2015). 1039: 235: 131: 42:atom. These terms are commonly used in 3419:Methylidene-imidazolone (MIO) formation 2053: 1870: 298:compounds starts with the formation of 282:Heavy metals: arsenic, mercury, cadmium 258:(Hcy). The overall reaction transforms 143: 3480: 2104: 1265: 1142: 587:may be likewise methylated to give an 434: 240:The methylation reaction catalyzed by 231: 3303:Lysine tyrosylquinone (LTQ) formation 2643: 2224: 1948: 1871:Stewart, Kendal (15 September 2017). 1215: 838:Methylation sometimes involve use of 393:occurs in different RNA species viz. 334:is the conversion of the cytosine to 224:-methylhistidine, and two isomers of 2776:Glycosyl phosphatidylinositol (GPI) 1704:Li-Byarlay, Hongmei (19 May 2016). 1187: 459:protein arginine methyltransferases 13: 2405:Purdie, T.; Irvine, J. C. (1903). 2165:March's Advanced Organic Chemistry 1710:Frontiers in Ecology and Evolution 896:Milder methylating agents include 665: 385: 326: 38:, with a methyl group replacing a 14: 3514: 3087:Oxidative deamination to aldehyde 2627: 946: 659:. This method avoids the risk of 563:). These reagents all react via S 117: 2225:Hiers, G. S. (1929). "Anisole". 932: 918: 888: 884:(C=O) of ketones and aldehyde.: 638: 610: 164:caffeoyl-CoA O-methyltransferase 97:. The reverse of methylation is 3503:Post-translational modification 2675:posttranslational modifications 2547: 2520: 2493: 2456: 2429: 2371: 2343: 2300: 2272: 2245: 2218: 2189: 2156: 1984:Current Opinion in Cell Biology 1942: 1891: 1864: 1814: 1763: 1730: 1697: 1646: 1586: 1149:Journal of Biological Chemistry 655:is a method for methylation of 501: 487:post-translational modification 95:histological staining artifacts 1562:10.1001/jamadermatol.2018.1373 1523:10.1001/jamadermatol.2016.1336 1360: 1136: 1093: 1084: 1033: 880:will add methyl groups to the 752: 559:, and methyl fluorosulfonate ( 158:undergo O-methylation to give 1: 2477:10.1002/047084289X.rt298.pub2 2407:"C.?The alkylation of sugars" 1050:10.1016/S0083-6729(08)00410-X 1026: 647:Eschweiler–Clarke methylation 338:. The formation of Me-CpG is 104: 674:is used to methylate amines. 549:tetramethylammonium chloride 492: 373:ubiquitously expressed genes 7: 2894:Topaquinone (TPQ) formation 1949:Walsh, Christopher (2006). 1747:10.1016/bs.aiip.2015.06.002 1001:Titanium–zinc methylenation 911: 455:asymmetric dimethylarginine 200: 10: 3519: 2173:10.1002/9780470084960.ch13 2167:. 2006. pp. 853–933. 1917:10.1186/s12864-023-09411-4 1143:Clarke, Steven G. (2018). 688:trimethylsilyldiazomethane 672:Eschweiler–Clarke reaction 653:Eschweiler–Clarke reaction 569:nucleophilic substitutions 479:histone methyltransferases 354:is directly followed by a 147: 3431: 3401: 3374: 3347: 3338:Crosslinks between three 3337: 3311: 3289: 3267: 3240: 3230: 3208: 3184: 3166: 3138: 3032: 3014: 2991: 2953: 2930: 2907: 2849: 2804: 2794: 2761: 2717: 2681: 2671:Protein primary structure 2337:10.1016/j.tet.2008.10.024 2131:10.1038/s42003-020-0942-0 1996:10.1016/j.ceb.2004.04.002 1672:10.3389/fgene.2020.566320 1280:10.1007/s12033-009-9216-2 965:Microscale thermophoresis 525:Electrophilic methylation 463:lysine methyltransferases 442:typically takes place on 3432:Crosslinks between four 2568:10.15227/orgsyn.062.0031 2541:10.15227/orgsyn.030.0075 2514:10.15227/orgsyn.055.0007 2450:10.15227/orgsyn.025.0089 2392:10.15227/orgsyn.041.0009 2365:10.15227/orgsyn.084.0295 2294:10.15227/orgsyn.076.0169 2266:10.15227/orgsyn.029.0063 2239:10.15227/orgsyn.009.0012 2212:10.15227/orgsyn.031.0090 1789:10.3389/fgene.2016.00099 1162:10.1074/jbc.AW118.003235 985:Organic chemistry topics 961:DNA Methylation Database 834:Nucleophilic methylation 506:The term methylation in 425:N6-methyladenosine (m6A) 260:5-methyltetrahydrofolate 3231:Crosslinks between two 2039:10.1126/science.1060118 1723:10.3389/fevo.2016.00057 1621:10.1073/pnas.1310735110 862:methylmagnesium bromide 686:and the safer analogue 535:methyl sources such as 26:, is the addition of a 2879:Porphyrin ring linkage 2587:Nucleic Acids Research 2118:Communications Biology 2079:10.1186/1472-6807-5-19 2066:BMC Structural Biology 1225:Archives of Toxicology 1209:10.1002/hlca.200390329 1197:Helvetica Chimica Acta 1042:Folic Acid and Folates 821: 675: 322:Epigenetic methylation 244: 137: 2940:Succinimide formation 1951:"Protein Methylation" 1776:Frontiers in Genetics 1659:Frontiers in Genetics 1476:10.1093/humrep/des319 1237:10.1007/s002040000134 822: 669: 475:S-adenosyl methionine 344:DNA methyltransferase 312:microbial methylation 239: 135: 2694:Protein biosynthesis 2423:10.1039/CT9038301021 1119:10.1155/2017/1654237 953:Bisulfite sequencing 697: 304:S-adenosylmethionine 144:O-methyltransferases 2331:(51): 11618–11624. 2031:2001Sci...292..110N 1612:2013PNAS..11012750L 1606:(31): 12750–12755. 1386:10.1038/nature11086 1336:10.1038/nature08514 1328:2009Natur.462..315L 1155:(27): 10438–10446. 815: 796: 780: 767: 748: 732: 713: 440:Protein methylation 435:Protein methylation 248:Methionine synthase 242:methionine synthase 232:Methionine synthase 195:5-O-methylquercetin 191:5-O-methylmyricetin 187:5-O-methylgenistein 150:O-methyltransferase 3024:Transglutamination 2599:10.1093/nar/gkr035 1879:on 12 October 2017 1463:Human Reproduction 906:trimethylaluminium 817: 803: 784: 768: 755: 736: 720: 701: 676: 620:Purdie methylation 545:dimethyl carbonate 469:. The transfer of 245: 154:A wide variety of 138: 63:biological systems 3498:Organic reactions 3475: 3474: 3471: 3470: 3427: 3426: 3333: 3332: 3226: 3225: 2978:Polyglutamylation 2864:Dephosphorylation 2823:Dephosphorylation 2556:Organic Syntheses 2529:Organic Syntheses 2502:Organic Syntheses 2486:978-0-471-93623-7 2438:Organic Syntheses 2380:Organic Syntheses 2353:Organic Syntheses 2282:Organic Syntheses 2254:Organic Syntheses 2227:Organic Syntheses 2199:Organic Syntheses 2182:978-0-471-72091-1 2025:(5514): 110–113. 1964:978-0-9747077-3-0 1840:10.1038/nsmb.3148 1756:978-0-12-802586-4 1426:10.4161/epi.25798 1203:(12): 3939–3954. 1059:978-0-12-374232-2 858:Grignard reagents 806: 799: 787: 771: 758: 751: 739: 723: 716: 704: 571:. For example, a 508:organic chemistry 228:-methylarginine. 220:, two isomers of 65:, methylation is 24:chemical sciences 3510: 3439: 3438: 3345: 3344: 3281:Sulfilimine bond 3259:ADP-ribosylation 3238: 3237: 3158:ADP-ribosylation 3077:ADP-ribosylation 2968:ADP-ribosylation 2945:ADP-ribosylation 2869:ADP-ribosylation 2841:ADP-ribosylation 2802: 2801: 2795:Single specific 2664: 2657: 2650: 2641: 2640: 2621: 2620: 2610: 2578: 2572: 2571: 2551: 2545: 2544: 2524: 2518: 2517: 2497: 2491: 2490: 2460: 2454: 2453: 2433: 2427: 2426: 2402: 2396: 2395: 2375: 2369: 2368: 2347: 2341: 2340: 2304: 2298: 2297: 2276: 2270: 2269: 2249: 2243: 2242: 2222: 2216: 2215: 2193: 2187: 2186: 2160: 2154: 2153: 2143: 2133: 2108: 2102: 2101: 2091: 2081: 2057: 2051: 2050: 2014: 2008: 2007: 1975: 1969: 1968: 1946: 1940: 1939: 1929: 1919: 1895: 1889: 1888: 1886: 1884: 1875:. Archived from 1868: 1862: 1861: 1851: 1818: 1812: 1811: 1801: 1791: 1767: 1761: 1760: 1734: 1728: 1727: 1725: 1701: 1695: 1694: 1684: 1674: 1650: 1644: 1643: 1633: 1623: 1590: 1584: 1583: 1573: 1550:JAMA Dermatology 1541: 1535: 1534: 1511:JAMA Dermatology 1505: 1499: 1498: 1488: 1478: 1454: 1448: 1447: 1437: 1405: 1399: 1398: 1388: 1364: 1358: 1357: 1347: 1322:(7271): 315–22. 1306: 1300: 1299: 1263: 1257: 1256: 1219: 1213: 1212: 1191: 1185: 1184: 1174: 1164: 1140: 1134: 1133: 1131: 1121: 1097: 1091: 1088: 1082: 1081: 1071: 1037: 979:5-methylcytosine 942: 937: 936: 928: 926:Chemistry portal 923: 922: 921: 892: 879: 872:). For example, 871: 855: 826: 824: 823: 818: 816: 814: 811: 804: 797: 795: 792: 785: 779: 776: 769: 766: 763: 756: 749: 747: 744: 737: 731: 728: 721: 714: 712: 709: 702: 642: 614: 597: 586: 541:dimethyl sulfate 520: 336:5-methylcytosine 300:methanearsonates 264:tetrahydrofolate 83:protein function 81:, regulation of 77:, regulation of 3518: 3517: 3513: 3512: 3511: 3509: 3508: 3507: 3478: 3477: 3476: 3467: 3423: 3397: 3370: 3329: 3307: 3285: 3263: 3222: 3218:C-mannosylation 3204: 3180: 3162: 3134: 3100:Imine formation 3028: 3010: 2987: 2983:Polyglycylation 2949: 2926: 2903: 2859:Phosphorylation 2845: 2818:Phosphorylation 2790: 2757: 2713: 2677: 2668: 2630: 2625: 2624: 2579: 2575: 2552: 2548: 2525: 2521: 2498: 2494: 2487: 2461: 2457: 2434: 2430: 2403: 2399: 2376: 2372: 2348: 2344: 2322: 2318: 2314: 2310: 2305: 2301: 2277: 2273: 2250: 2246: 2223: 2219: 2194: 2190: 2183: 2162: 2161: 2157: 2109: 2105: 2058: 2054: 2015: 2011: 1976: 1972: 1965: 1947: 1943: 1896: 1892: 1882: 1880: 1869: 1865: 1819: 1815: 1768: 1764: 1757: 1735: 1731: 1702: 1698: 1651: 1647: 1591: 1587: 1542: 1538: 1506: 1502: 1455: 1451: 1406: 1402: 1379:(7378): 490–5. 1365: 1361: 1307: 1303: 1264: 1260: 1220: 1216: 1192: 1188: 1141: 1137: 1098: 1094: 1089: 1085: 1060: 1038: 1034: 1029: 1021:Tebbe's reagent 1016:Wittig reaction 1006:Petasis reagent 987: 949: 938: 931: 924: 919: 917: 914: 877: 873: 869: 865: 853: 849: 836: 812: 807: 793: 788: 777: 772: 764: 759: 745: 740: 729: 724: 710: 705: 700: 698: 695: 694: 681: 649: 596: 592: 584: 566: 553:methyl triflate 527: 519: 515: 504: 495: 437: 391:RNA methylation 388: 386:RNA methylation 332:DNA methylation 329: 327:DNA methylation 324: 284: 262:(N-MeTHF) into 234: 218:-methylcysteine 211:phosphorylation 203: 152: 146: 128: 120: 107: 79:gene expression 17: 12: 11: 5: 3516: 3506: 3505: 3500: 3495: 3490: 3473: 3472: 3469: 3468: 3466: 3465: 3459: 3457: 3436: 3429: 3428: 3425: 3424: 3422: 3421: 3415: 3413: 3399: 3398: 3396: 3395: 3388: 3386: 3372: 3371: 3369: 3368: 3361: 3359: 3342: 3335: 3334: 3331: 3330: 3328: 3327: 3321: 3319: 3309: 3308: 3306: 3305: 3299: 3297: 3287: 3286: 3284: 3283: 3277: 3275: 3265: 3264: 3262: 3261: 3256: 3254:Disulfide bond 3250: 3248: 3235: 3228: 3227: 3224: 3223: 3221: 3220: 3214: 3212: 3206: 3205: 3203: 3202: 3197: 3190: 3188: 3182: 3181: 3179: 3178: 3172: 3170: 3164: 3163: 3161: 3160: 3155: 3150: 3148:Citrullination 3144: 3142: 3136: 3135: 3133: 3132: 3127: 3125:Propionylation 3122: 3117: 3112: 3107: 3102: 3097: 3095:-glycosylation 3089: 3084: 3079: 3074: 3069: 3067:Ubiquitination 3064: 3059: 3054: 3049: 3044: 3038: 3036: 3030: 3029: 3027: 3026: 3020: 3018: 3012: 3011: 3009: 3008: 3003: 2997: 2995: 2989: 2988: 2986: 2985: 2980: 2975: 2970: 2965: 2959: 2957: 2951: 2950: 2948: 2947: 2942: 2936: 2934: 2928: 2927: 2925: 2924: 2919: 2917:Palmitoylation 2913: 2911: 2905: 2904: 2902: 2901: 2899:Detyrosination 2896: 2891: 2889:Flavin linkage 2886: 2881: 2876: 2871: 2866: 2861: 2855: 2853: 2847: 2846: 2844: 2843: 2838: 2830: 2825: 2820: 2814: 2812: 2799: 2792: 2791: 2789: 2788: 2786:Detyrosination 2783: 2778: 2773: 2767: 2765: 2759: 2758: 2756: 2755: 2752:Myristoylation 2749: 2744: 2739: 2734: 2729: 2723: 2721: 2715: 2714: 2712: 2711: 2709:N–O acyl shift 2706: 2701: 2696: 2691: 2685: 2683: 2679: 2678: 2667: 2666: 2659: 2652: 2644: 2638: 2637: 2629: 2628:External links 2626: 2623: 2622: 2573: 2546: 2519: 2492: 2485: 2455: 2428: 2397: 2370: 2342: 2320: 2316: 2312: 2308: 2299: 2271: 2244: 2217: 2188: 2181: 2155: 2103: 2052: 2009: 1990:(3): 230–238. 1970: 1963: 1941: 1890: 1863: 1834:(2): 110–115. 1813: 1762: 1755: 1729: 1696: 1645: 1585: 1556:(7): 819–823. 1536: 1500: 1469:(12): 3632–8. 1449: 1400: 1359: 1301: 1268:Mol Biotechnol 1258: 1231:(6): 289–299. 1214: 1186: 1135: 1092: 1083: 1058: 1031: 1030: 1028: 1025: 1024: 1023: 1018: 1013: 1011:Nysted reagent 1008: 1003: 998: 993: 986: 983: 982: 981: 968: 962: 956: 948: 947:Biology topics 945: 944: 943: 940:Biology portal 929: 913: 910: 898:tetramethyltin 894: 893: 875: 867: 851: 835: 832: 828: 827: 810: 802: 791: 783: 775: 762: 754: 743: 735: 727: 719: 708: 680: 677: 661:quaternization 648: 645: 644: 643: 616: 615: 598:; or a ketone 594: 564: 526: 523: 517: 510:refers to the 503: 500: 494: 491: 483:epigenetically 436: 433: 387: 384: 342:by the enzyme 328: 325: 323: 320: 314:of mercury to 292:biomethylation 283: 280: 233: 230: 207:ubiquitination 202: 199: 148:Main article: 145: 142: 126: 123:Methanogenesis 119: 118:Methanogenesis 116: 106: 103: 87:RNA processing 15: 9: 6: 4: 3: 2: 3515: 3504: 3501: 3499: 3496: 3494: 3491: 3489: 3486: 3485: 3483: 3464: 3461: 3460: 3458: 3456: 3452: 3448: 3444: 3440: 3437: 3435: 3430: 3420: 3417: 3416: 3414: 3412: 3408: 3404: 3400: 3394:(chromophore) 3393: 3390: 3389: 3387: 3385: 3381: 3377: 3373: 3367:(chromophore) 3366: 3363: 3362: 3360: 3358: 3354: 3350: 3346: 3343: 3341: 3336: 3326: 3323: 3322: 3320: 3318: 3314: 3310: 3304: 3301: 3300: 3298: 3296: 3292: 3288: 3282: 3279: 3278: 3276: 3274: 3273:Hydroxylysine 3270: 3266: 3260: 3257: 3255: 3252: 3251: 3249: 3247: 3243: 3239: 3236: 3234: 3229: 3219: 3216: 3215: 3213: 3211: 3207: 3201: 3200:Adenylylation 3198: 3195: 3192: 3191: 3189: 3187: 3183: 3177: 3176:Hydroxylation 3174: 3173: 3171: 3169: 3165: 3159: 3156: 3154: 3151: 3149: 3146: 3145: 3143: 3141: 3137: 3131: 3128: 3126: 3123: 3121: 3118: 3116: 3115:Succinylation 3113: 3111: 3110:Carbamylation 3108: 3106: 3103: 3101: 3098: 3096: 3094: 3090: 3088: 3085: 3083: 3080: 3078: 3075: 3073: 3070: 3068: 3065: 3063: 3062:Hydroxylation 3060: 3058: 3057:Adenylylation 3055: 3053: 3050: 3048: 3045: 3043: 3040: 3039: 3037: 3035: 3031: 3025: 3022: 3021: 3019: 3017: 3013: 3007: 3006:Glycosylation 3004: 3002: 2999: 2998: 2996: 2994: 2990: 2984: 2981: 2979: 2976: 2974: 2971: 2969: 2966: 2964: 2963:Carboxylation 2961: 2960: 2958: 2956: 2952: 2946: 2943: 2941: 2938: 2937: 2935: 2933: 2929: 2923: 2920: 2918: 2915: 2914: 2912: 2910: 2906: 2900: 2897: 2895: 2892: 2890: 2887: 2885: 2884:Adenylylation 2882: 2880: 2877: 2875: 2872: 2870: 2867: 2865: 2862: 2860: 2857: 2856: 2854: 2852: 2848: 2842: 2839: 2837: 2835: 2831: 2829: 2828:Glycosylation 2826: 2824: 2821: 2819: 2816: 2815: 2813: 2811: 2807: 2803: 2800: 2798: 2793: 2787: 2784: 2782: 2781:O-methylation 2779: 2777: 2774: 2772: 2769: 2768: 2766: 2764: 2760: 2753: 2750: 2748: 2745: 2743: 2740: 2738: 2735: 2733: 2732:Carbamylation 2730: 2728: 2725: 2724: 2722: 2720: 2716: 2710: 2707: 2705: 2702: 2700: 2697: 2695: 2692: 2690: 2687: 2686: 2684: 2680: 2676: 2672: 2665: 2660: 2658: 2653: 2651: 2646: 2645: 2642: 2635: 2632: 2631: 2618: 2614: 2609: 2604: 2600: 2596: 2592: 2588: 2584: 2577: 2569: 2565: 2561: 2557: 2550: 2542: 2538: 2534: 2530: 2523: 2515: 2511: 2507: 2503: 2496: 2488: 2482: 2478: 2474: 2470: 2466: 2459: 2451: 2447: 2443: 2439: 2432: 2424: 2420: 2417:: 1021–1037. 2416: 2412: 2408: 2401: 2393: 2389: 2385: 2381: 2374: 2366: 2362: 2358: 2354: 2346: 2338: 2334: 2330: 2326: 2303: 2295: 2291: 2287: 2283: 2275: 2267: 2263: 2259: 2255: 2248: 2240: 2236: 2232: 2228: 2221: 2213: 2209: 2205: 2201: 2200: 2192: 2184: 2178: 2174: 2170: 2166: 2159: 2151: 2147: 2142: 2137: 2132: 2127: 2123: 2119: 2115: 2107: 2099: 2095: 2090: 2085: 2080: 2075: 2071: 2067: 2063: 2056: 2048: 2044: 2040: 2036: 2032: 2028: 2024: 2020: 2013: 2005: 2001: 1997: 1993: 1989: 1985: 1981: 1974: 1966: 1960: 1956: 1952: 1945: 1937: 1933: 1928: 1923: 1918: 1913: 1909: 1905: 1901: 1894: 1878: 1874: 1867: 1859: 1855: 1850: 1845: 1841: 1837: 1833: 1829: 1825: 1817: 1809: 1805: 1800: 1795: 1790: 1785: 1781: 1777: 1773: 1766: 1758: 1752: 1748: 1744: 1740: 1733: 1724: 1719: 1715: 1711: 1707: 1700: 1692: 1688: 1683: 1678: 1673: 1668: 1664: 1660: 1656: 1649: 1641: 1637: 1632: 1627: 1622: 1617: 1613: 1609: 1605: 1601: 1597: 1589: 1581: 1577: 1572: 1567: 1563: 1559: 1555: 1551: 1547: 1540: 1532: 1528: 1524: 1520: 1517:(8): 928–33. 1516: 1512: 1504: 1496: 1492: 1487: 1486:11392/1689715 1482: 1477: 1472: 1468: 1464: 1460: 1453: 1445: 1441: 1436: 1431: 1427: 1423: 1419: 1415: 1411: 1404: 1396: 1392: 1387: 1382: 1378: 1374: 1370: 1363: 1355: 1351: 1346: 1341: 1337: 1333: 1329: 1325: 1321: 1317: 1313: 1305: 1297: 1293: 1289: 1285: 1281: 1277: 1273: 1269: 1262: 1254: 1250: 1246: 1242: 1238: 1234: 1230: 1226: 1218: 1210: 1206: 1202: 1198: 1190: 1182: 1178: 1173: 1168: 1163: 1158: 1154: 1150: 1146: 1139: 1130: 1125: 1120: 1115: 1111: 1107: 1103: 1096: 1087: 1079: 1075: 1070: 1065: 1061: 1055: 1051: 1047: 1043: 1036: 1032: 1022: 1019: 1017: 1014: 1012: 1009: 1007: 1004: 1002: 999: 997: 994: 992: 989: 988: 980: 976: 972: 971:Remethylation 969: 966: 963: 960: 957: 954: 951: 950: 941: 935: 930: 927: 916: 909: 907: 903: 899: 891: 887: 886: 885: 883: 863: 859: 847: 846:methyllithium 843: 842: 831: 808: 800: 789: 781: 773: 760: 741: 733: 725: 717: 706: 693: 692: 691: 689: 685: 673: 668: 664: 662: 658: 654: 641: 637: 636: 635: 633: 629: 625: 624:carbohydrates 621: 613: 609: 608: 607: 605: 601: 590: 582: 578: 574: 570: 562: 558: 554: 550: 546: 542: 538: 534: 533: 532:electrophilic 522: 513: 509: 499: 490: 488: 484: 480: 476: 472: 468: 464: 460: 456: 452: 449: 445: 441: 432: 429: 426: 422: 420: 416: 412: 408: 404: 400: 396: 392: 383: 381: 376: 374: 370: 366: 362: 357: 353: 349: 345: 341: 337: 333: 319: 317: 316:methylmercury 313: 309: 305: 301: 297: 293: 289: 279: 277: 273: 267: 265: 261: 257: 253: 249: 243: 238: 229: 227: 223: 219: 217: 212: 208: 198: 197:(azaleatin). 196: 192: 188: 184: 183:methoxy bonds 179: 177: 173: 169: 165: 161: 157: 151: 141: 134: 130: 124: 115: 113: 102: 100: 99:demethylation 96: 92: 88: 84: 80: 76: 72: 68: 64: 59: 57: 53: 49: 45: 41: 37: 33: 29: 25: 21: 3152: 3130:Butyrylation 3092: 3041: 2972: 2833: 2746: 2704:Racemization 2689:Peptide bond 2590: 2586: 2576: 2559: 2555: 2549: 2532: 2528: 2522: 2505: 2501: 2495: 2468: 2464: 2458: 2441: 2437: 2431: 2414: 2410: 2400: 2383: 2379: 2373: 2356: 2352: 2345: 2328: 2324: 2302: 2285: 2281: 2274: 2257: 2253: 2247: 2230: 2226: 2220: 2203: 2197: 2191: 2164: 2158: 2121: 2117: 2106: 2069: 2065: 2055: 2022: 2018: 2012: 1987: 1983: 1973: 1954: 1944: 1907: 1904:BMC Genomics 1903: 1893: 1881:. 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The 193:, and 176:lignin 85:, and 54:, and 2754:(Gly) 2508:: 7. 2386:: 9. 2315:or Cs 1292:S2CID 1249:S2CID 856:) or 589:ether 583:salt 579:; an 577:ester 547:, or 419:miRNA 411:snRNA 407:tmRNA 30:on a 2673:and 2613:PMID 2481:ISBN 2177:ISBN 2146:PMID 2094:PMID 2043:PMID 2000:PMID 1959:ISBN 1932:PMID 1885:2017 1854:PMID 1804:PMID 1751:ISBN 1687:PMID 1636:PMID 1576:PMID 1527:PMID 1491:PMID 1440:PMID 1391:PMID 1350:PMID 1284:PMID 1241:PMID 1177:PMID 1110:2017 1074:PMID 1054:ISBN 977:and 798:Otms 670:The 651:The 630:and 618:The 593:ROCH 403:mRNA 399:rRNA 395:tRNA 276:zinc 209:and 3434:AAs 3340:AAs 3233:AAs 2797:AAs 2603:PMC 2595:doi 2564:doi 2537:doi 2510:doi 2473:doi 2446:doi 2419:doi 2388:doi 2361:doi 2333:doi 2323:". 2290:doi 2262:doi 2235:doi 2208:doi 2169:doi 2136:PMC 2126:doi 2084:PMC 2074:doi 2035:doi 2023:292 1992:doi 1922:PMC 1912:doi 1844:PMC 1836:doi 1794:PMC 1784:doi 1743:doi 1718:doi 1677:PMC 1667:doi 1626:PMC 1616:doi 1604:110 1566:PMC 1558:doi 1554:154 1519:doi 1515:152 1481:hdl 1471:doi 1430:PMC 1422:doi 1381:doi 1377:480 1340:PMC 1332:doi 1320:462 1276:doi 1233:doi 1205:doi 1167:PMC 1157:doi 1153:293 1124:hdl 1114:doi 1064:PMC 1046:doi 870:MgX 757:RCO 703:RCO 446:or 378:In 294:of 174:to 69:by 61:In 3484:: 2611:. 2601:. 2591:39 2589:. 2585:. 2560:62 2558:. 2533:30 2531:. 2506:55 2504:. 2479:. 2471:. 2467:. 2442:25 2440:. 2415:83 2413:. 2409:. 2384:41 2382:. 2357:84 2355:. 2329:64 2327:. 2319:CO 2311:CO 2286:76 2284:. 2258:29 2256:. 2229:. 2204:31 2202:. 2175:. 2144:. 2134:. 2120:. 2116:. 2092:. 2082:. 2068:. 2064:. 2041:. 2033:. 2021:. 1998:. 1988:16 1986:. 1982:. 1953:. 1930:. 1920:. 1908:24 1906:. 1902:. 1852:. 1842:. 1832:23 1830:. 1826:. 1802:. 1792:. 1778:. 1774:. 1749:. 1716:. 1712:. 1708:. 1685:. 1675:. 1665:. 1663:11 1661:. 1657:. 1634:. 1624:. 1614:. 1602:. 1598:. 1574:. 1564:. 1552:. 1548:. 1525:. 1513:. 1489:. 1479:. 1467:27 1465:. 1461:. 1438:. 1428:. 1416:. 1412:. 1389:. 1375:. 1371:. 1348:. 1338:. 1330:. 1318:. 1314:. 1290:. 1282:. 1272:44 1270:. 1247:. 1239:. 1229:74 1227:. 1201:86 1199:. 1175:. 1165:. 1151:. 1147:. 1122:. 1108:. 1104:. 1072:. 1062:. 1052:. 908:. 900:, 878:Li 874:CH 866:CH 854:Li 850:CH 786:CH 770:CH 750:OH 738:CH 634:. 606:. 591:, 585:RO 567:2 555:, 543:, 539:, 516:CH 489:. 417:, 413:, 409:, 405:, 401:, 397:, 318:. 189:, 170:, 101:. 89:. 58:. 50:, 46:, 3453:– 3449:– 3445:– 3409:– 3405:– 3382:– 3378:– 3355:– 3351:– 3315:– 3293:– 3271:– 3244:– 3093:O 2834:O 2808:/ 2663:e 2656:t 2649:v 2619:. 2597:: 2570:. 2566:: 2543:. 2539:: 2516:. 2512:: 2489:. 2475:: 2452:. 2448:: 2425:. 2421:: 2394:. 2390:: 2367:. 2363:: 2339:. 2335:: 2321:3 2317:2 2313:3 2309:2 2296:. 2292:: 2268:. 2264:: 2241:. 2237:: 2231:9 2214:. 2210:: 2185:. 2171:: 2152:. 2128:: 2122:3 2100:. 2076:: 2070:5 2049:. 2037:: 2029:: 2006:. 1994:: 1967:. 1938:. 1914:: 1887:. 1860:. 1838:: 1810:. 1786:: 1780:7 1759:. 1745:: 1726:. 1720:: 1714:4 1693:. 1669:: 1642:. 1618:: 1610:: 1582:. 1560:: 1533:. 1521:: 1497:. 1483:: 1473:: 1446:. 1424:: 1418:8 1397:. 1383:: 1356:. 1334:: 1326:: 1298:. 1278:: 1255:. 1235:: 1211:. 1207:: 1183:. 1159:: 1132:. 1126:: 1116:: 1080:. 1048:: 876:3 868:3 864:( 852:3 848:( 809:2 805:N 801:+ 790:3 782:+ 774:3 761:2 742:3 734:+ 726:2 718:+ 715:H 707:2 595:3 565:N 518:3 226:N 222:N 216:S 127:2

Index

chemical sciences
methyl group
substrate
alkylation
hydrogen
chemistry
biochemistry
soil science
biology
biological systems
catalyzed
enzymes
heavy metals
gene expression
protein function
RNA processing
histological staining artifacts
demethylation
epigenetics
Methanogenesis

O-methyltransferase
phenols
anisole
caffeoyl-CoA O-methyltransferase
lignols
percursors
lignin
methoxy bonds
5-O-methylgenistein

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