Jump to content

S-Methylmethionine: Difference between revisions

From Wikipedia, the free encyclopedia
Content deleted Content added
Better direction, if at all.
→‎References: This is where these external links belong if they belong anywhere.
Line 43: Line 43:
== References ==
== References ==
{{Reflist}}
{{Reflist}}

==Further reading==
{{refbegin|35em}}
*{{cite journal |first1=Na Young |last1=Lee |first2=Kui Young |last2=Park |first3=Hye Jung |last3=Min |first4=Kye Yong |last4=Song |first5=Yun Young |last5=Lim |first6=Juhee |last6=Park |first7=Beom Joon |last7=Kim |first8=Myeung Nam |last8=Kim |title=Inhibitory Effect of Vitamin U (S-Methylmethionine Sulfonium Chloride) on Differentiation in 3T3-L1 Pre-adipocyte Cell Lines |journal=Annals of Dermatology |pmid=22363154 |year=2012 |volume=24 |issue=1 |pages=39–44 |doi=10.5021/ad.2012.24.1.39 |pmc=3283849}}
*{{cite journal |first1=Xiao-Lin |last1=Jiang |first2=Lee Wah |last2=Lim |first3=Toyohide |last3=Takeuchi |title=Vitamin U-bonded Stationary Phase in Capillary Ion Chromatography |journal=Analytical Sciences |pmid=22156247 |year=2011 |volume=27 |issue=12 |pages=1203–6 |doi=10.2116/analsci.27.1203}}
*{{cite journal |doi=10.1159/000276495 |title=Accelerated Wound Healing by ''S''-Methylmethionine Sulfonium: Evidence of Dermal Fibroblast Activation via the ERK1/2 Pathway |year=2010 |last1=Kim |first1=Won-Serk |last2=Yang |first2=You Jin |last3=Min |first3=Hyung Geun |last4=Song |first4=Min Gyu |last5=Lee |first5=Ji-Seon |last6=Park |first6=Keung-Young |last7=Kim |first7=Jin-Ju |last8=Sung |first8=Jong-Hyuk |last9=Choi |first9=Jun-Seok |journal=Pharmacology |volume=85 |issue=2 |pages=68–76 |pmid=20110751}}
*{{cite journal |doi=10.1111/j.1440-1746.2008.05667.x |title=Effects of combination treatment with famotidine and methylmethionine sulfonium chloride on the mucus barrier of rat gastric mucosa |year=2009 |last1=Ichikawa |first1=Takafumi |last2=Ito |first2=Yuko |last3=Saegusa |first3=Yoichi |last4=Iwai |first4=Tomohisa |last5=Goso |first5=Yukinobu |last6=Ikezawa |first6=Tomoaki |last7=Ishihara |first7=Kazuhiko |journal=Journal of Gastroenterology and Hepatology |volume=24 |issue=3 |pages=488–92 |pmid=19175830}}
*{{cite journal |doi=10.1111/j.1751-0813.2007.00197.x |title=Effect of s-methylmethionine sulphonium chloride on oesophagogastric ulcers in pigs |year=2007 |last1=Kopinski |first1=JS |last2=Fogarty |first2=R |last3=McVeigh |first3=J |journal=Australian Veterinary Journal |volume=85 |issue=9 |pages=362–7 |pmid=17760939}}
*{{cite book |first=Ashley Lynn |last=Shaw |year=2007 |title=The efficacy of DL-Methionine methylsulfonium chloride on performance characteristics and intestinal tract integrity in broilers |type=MS Thesis |publisher=Auburn University |url=http://hdl.handle.net/10415/826 |oclc=191697478}}
*{{cite journal |doi=10.1136/vr.137.12.290 |title=Effect of hammer mill screen size and addition of fibre or S-methylmethionine-sulphonium chloride to the diet on the occurrence of oesophagogastric lesions in fattening pigs |year=1995 |last1=Elbers |first1=A. |last2=Vos |first2=J. |last3=Hemke |first3=G. |last4=Hunneman |first4=W. |journal=Veterinary Record |volume=137 |issue=12 |pages=290–3 |pmid=8533223}}
*{{cite journal |pmid=8443719 |year=1993 |last1=Salim |first1=AS |title=Sulfhydryl-containing agents in the treatment of gastric bleeding induced by nonsteroidal anti-inflammatory drugs |volume=36 |issue=1 |pages=53–8 |journal=Canadian Journal of Surgery}}
*{{cite journal |doi=10.1159/000139016 |title=Role of Sulphydryl-Containing Agents in the Management of Recurrent Attacks of Ulcerative Colitis |year=1992 |last1=Salim |first1=Aws S. |journal=Pharmacology |volume=45 |issue=6 |pages=307–18 |pmid=1362613}}
*{{cite journal |doi=10.1159/000138995 |title=Sulphydryl-Containing Agents Stimulate the Healing of Duodenal Ulceration in Man |year=1992 |last1=Salim |first1=Aws S. |journal=Pharmacology |volume=45 |issue=3 |pages=170–80 |pmid=1438525}}
*{{cite journal |pmid=6234776 |year=1983 |last1=Tamás |first1=J |last2=Bokori |first2=J |last3=Hegedüs |first3=M |title=Oesophagogastric ulcer in swine and vitamin U. I. Relative incidence of the syndrome in Hungary |volume=31 |issue=4 |pages=145–53 |journal=Acta veterinaria Hungarica}}
*{{cite journal |pmid=6234777 |year=1983 |last1=Hegedüs |first1=M |last2=Bokori |first2=J |last3=Tamás |first3=J |title=Oesophagogastric ulcer in swine and vitamin U. II. Nature of vitamin U |volume=31 |issue=4 |pages=155–63 |journal=Acta veterinaria Hungarica}}
*{{cite journal |pmid=2953195 |year=1986 |last1=Tamás |first1=J |last2=Hegedüs |first2=M |last3=Bokori |first3=J |title=Oesophagogastric ulcer in swine and vitamin U. III. Reduction of economic losses by vitamin U |volume=34 |issue=1–2 |pages=81–92 |journal=Acta veterinaria Hungarica}}
*{{cite journal |pmid=2953196 |year=1986 |last1=Tamás |first1=J |last2=Hegedüs |first2=M |last3=Bokori |first3=J |title=Oesophagogastric ulcer in swine and vitamin U. IV. Efficiency of the Hungarian vitamin U preparation in reduction of economic losses |volume=34 |issue=1–2 |pages=93–100 |journal=Acta veterinaria Hungarica}}
*{{cite journal |first1=Garnett |last1=Cheney |first2=Samuel H. |last2=Waxler |first3=Ivan J. |last3=Miller |pmid=13276831 |year=1956 |title=Vitamin U Therapy of Peptic Ulcer: Experience at San Quentin Prison |volume=84 |issue=1 |pages=39–42 |pmc=1532869 |journal=California Medicine}}
*{{cite journal |first1=Garnett |last1=Cheney |pmid=13009468 |year=1952 |title=Vitamin U therapy of peptic ulcer |volume=77 |issue=4 |pages=248–52 |pmc=1521464 |journal=California medicine}}
{{refend}}


{{DEFAULTSORT:Methylmethionine, S-}}
{{DEFAULTSORT:Methylmethionine, S-}}

Revision as of 19:49, 23 May 2013

S-Methylmethionine[1]
Names
IUPAC name
(3-Amino-3-carboxy-propyl)-dimethyl-sulfonium
Other names
S-Methyl-L-methionine
Vitamin U
Identifiers
3D model (JSmol)
  • C[S+](C)CCC(C(=O)O)N
Properties
C6H15NO2S+
Molar mass 164.247 g/mol
Melting point 139 °C (282 °F)[1] (bromide salt, decomp.)
134 °C (273 °F)[1] (chloride salt, decomp.)
Hazards
Lethal dose or concentration (LD, LC):
2760 mg/kg (iv, mice, chloride salt)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

S-Methylmethionine is a derivative of methionine with the chemical formula [(CH3)3S(CH2)2CHNH3CO2]+. This cation is an intermediate in many biosynthetic pathways owing to the sulfonium functional group. The natural derivative S-methylmethionine is biosynthesized from L-methionine which is first converted to S-adenosylmethionine. The subsequent conversion, involving replacement of the adenosyl group by a methyl group is catalyzed by the enzyme methionine S-methyltransferase. S-Methylmethionine is particularly abundant in plants, being more abundant than methionine.[2]

Biochemical function

The osmolyte dimethylsulfoniopropionate (DMSP), produced by marine algae, is biosynthesized from S-methylmethionine. Intermediates include dimethylsulfoniumpropylamine and dimethylsulfoniumpropionaldehyde.[3]

Beer flavor precursor in barley malt

S-Methylmethionine is found in barley and during the malting process, particularly the curing stage in kilning, heat causes it to break down to form dimethyl sulfide (DMS).[4]

References

  1. ^ a b c d Merck Index, 12th Edition, 10165
  2. ^ Bourgis, F. (1999). "S-Methylmethionine Plays a Major Role in Phloem Sulfur Transport and is Synthesized by a Novel Type of Methyltransferase". The Plant Cell Online. 11 (8): 1485–1498. doi:10.1105/tpc.11.8.1485.
  3. ^ McNeil, S. D. (1999). "Betaines and Related Osmoprotectants. Targets for Metabolic Engineering of Stress Resistance". Plant Physiology. 120 (4): 945–949. doi:10.1104/pp.120.4.945.
  4. ^ Hornsey, Ian S (25 Nov 1999). Brewing. Royal Society of Chemistry. p. 47. ISBN 9780854045686. {{cite book}}: Cite has empty unknown parameter: |1= (help)

Further reading