Record Information |
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Version | 2.0 |
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Created at | 2006-08-13 08:10:37 UTC |
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Updated at | 2024-09-17 15:42:15 UTC |
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NP-MRD ID | NP0000550 |
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Secondary Accession Numbers | None |
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Natural Product Identification |
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Common Name | Selenomethionine |
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Description | Selenomethionine (CAS: 1464-42-2) Is an amino acid containing selenium that cannot be synthesized by higher animals but can be obtained from plant material. Selenomethionine is the major seleno-compound in cereal grains (wheat grain, maize, and rice), soybeans, and enriched yeast. Seleno-compounds present in plants may have a profound effect on the health of animals and human subjects. It is now known that the total Se content cannot be used as an indication of its efficacy, but knowledge of individual selenocompounds is necessary to fully assess the significance. Thus, speciation of the seleno-compounds has moved to the forefront. Since animals and man are dependent upon plants for their nutritional requirements, this makes the types of seleno-compounds in plants even more critical. Se enters the food chain through incorporation into plant proteins, mostly as selenocysteine and selenomethionine at normal Se levels. There are two possible pathways for the catabolism of selenomethionine. One is the transsulfuration pathway via selenocystathionine to produce selenocysteine, which in turn is degraded into H2Se by the enzyme beta-lyase. The other pathway is the transamination-decarboxylation pathway. It was estimated that 90% of methionine is metabolized through this pathway and thus could be also the major route for selenomethionine catabolism (PMID: 14748935 ). |
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Structure | InChI=1S/C5H11NO2Se/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1 |
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Synonyms | Value | Source |
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Selenomethionine, (+,-)-isomer | HMDB | Selenomethionine se 75 | HMDB | Radioselenomethionine | HMDB | Selenomethionine, (S)-isomer | HMDB | Sethotope | HMDB | Se 75, selenomethionine | HMDB | Selenomethionine hydrochloride, (S)-isomer | HMDB | (2S)-2-Amino-4-(methylseleno)butanoic acid | HMDB | (2S)-2-Azaniumyl-4-methylselanylbutanoate | HMDB | L-Selenomethionine | HMDB | Seleno-L-methionine | HMDB | 2-Amino-4-(methylseleno)butanoic acid | HMDB | 2-Amino-4-(methylseleno)butyric acid | HMDB | 2-Amino-4-(methylselenyl)butyric acid | HMDB | Selenium methionine | HMDB | Selenomethionine | MeSH |
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Chemical Formula | C5H11NO2Se |
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Average Mass | 196.1100 Da |
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Monoisotopic Mass | 196.99550 Da |
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IUPAC Name | (2S)-2-amino-4-(methylselanyl)butanoic acid |
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Traditional Name | L-selenomethionine |
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CAS Registry Number | 3211-76-5 |
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SMILES | C[Se]CCC(N)C(O)=O |
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InChI Identifier | InChI=1S/C5H11NO2Se/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8) |
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InChI Key | RJFAYQIBOAGBLC-UHFFFAOYSA-N |
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Experimental Spectra |
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| Spectrum Type | Description | Depositor Email | Depositor Organization | Depositor | Deposition Date | View |
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2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum |
| Predicted Spectra |
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| Spectrum Type | Description | Depositor ID | Depositor Organization | Depositor | Deposition Date | View |
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1D NMR | 13C NMR Spectrum (1D, 25 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 252 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 50 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 75 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 101 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 126 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 151 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 176 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 201 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 226 MHz, D2O, predicted) | Wishart Lab | Wishart Lab | David Wishart | 2021-06-20 | View Spectrum |
| Chemical Shift Submissions |
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| Not Available | Species |
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Species of Origin | |
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Species Where Detected | |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Carboxylic acids and derivatives |
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Sub Class | Amino acids, peptides, and analogues |
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Direct Parent | L-alpha-amino acids |
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Alternative Parents | |
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Substituents | - L-alpha-amino acid
- Fatty acid
- Amino acid
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Selenoether
- Amine
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Primary amine
- Organoselenium compound
- Organooxygen compound
- Organonitrogen compound
- Organic oxygen compound
- Primary aliphatic amine
- Organic nitrogen compound
- Carbonyl group
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Physical Properties |
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State | Solid |
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Experimental Properties | |
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Predicted Properties | |
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General References | - Greenwald P, Milner JA, Anderson DE, McDonald SS: Micronutrients in cancer chemoprevention. Cancer Metastasis Rev. 2002;21(3-4):217-30. [PubMed:12549762 ]
- Pointner H, Kinast H, Flegel U: 75Se-selenomethionine excretion in bile and pancreatic juice. Digestion. 1975;12(1):61-4. [PubMed:1175867 ]
- Seo YR, Sweeney C, Smith ML: Selenomethionine induction of DNA repair response in human fibroblasts. Oncogene. 2002 May 23;21(23):3663-9. [PubMed:12032834 ]
- Yang X, Tian Y, Ha P, Gu L: [Determination of the selenomethionine content in grain and human blood]. Wei Sheng Yan Jiu. 1997 Mar;26(2):113-6. [PubMed:10325615 ]
- Hoang TT, Chen Y, May SW, Browner RF: Analysis of organoselenium compounds in human urine using active carbon and chemically modified silica sol-gel surface-assisted laser desorption/ionization high-resolution time-of-flight mass spectrometry. Anal Chem. 2004 Apr 1;76(7):2062-70. [PubMed:15053672 ]
- Dorea JG: Selenium and breast-feeding. Br J Nutr. 2002 Nov;88(5):443-61. [PubMed:12425725 ]
- Wally J, Halbrooks PJ, Vonrhein C, Rould MA, Everse SJ, Mason AB, Buchanan SK: The crystal structure of iron-free human serum transferrin provides insight into inter-lobe communication and receptor binding. J Biol Chem. 2006 Aug 25;281(34):24934-44. Epub 2006 Jun 22. [PubMed:16793765 ]
- Cabanero AI, Madrid Y, Camara C: Selenium long-term administration and its effect on mercury toxicity. J Agric Food Chem. 2006 Jun 14;54(12):4461-8. [PubMed:16756381 ]
- Wan XS, Zhou Z, Kennedy AR, Kopelovich L: In vitro evaluation of chemopreventive agents using cultured human prostate epithelial cells. Oncol Rep. 2003 Nov-Dec;10(6):2009-14. [PubMed:14534735 ]
- Nakanishi F, Kasuga T, Kobayashi T, Miyabayashi H, Yano K: [Method of analysis of regional dynamics of the pancreas with 75Se-selenomethionine]. Kaku Igaku. 1977 Apr;14(2):223-32. [PubMed:559835 ]
- Agnew JE, McCarthy DM, Melmed RNBOUCHIER IA: Count rate analysis as an adjunct to the 75Se-selenomethionine pancreas scan. Br J Radiol. 1969 Oct;42(502):762-9. [PubMed:5345341 ]
- Kuehnelt D, Kienzl N, Traar P, Le NH, Francesconi KA, Ochi T: Selenium metabolites in human urine after ingestion of selenite, L-selenomethionine, or DL-selenomethionine: a quantitative case study by HPLC/ICPMS. Anal Bioanal Chem. 2005 Sep;383(2):235-46. Epub 2005 Oct 12. [PubMed:16132136 ]
- Whanger PD: Selenium and its relationship to cancer: an update. Br J Nutr. 2004 Jan;91(1):11-28. [PubMed:14748935 ]
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