| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2006-08-13 11:34:05 UTC |
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| Update Date | 2023-02-21 17:16:56 UTC |
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| HMDB ID | HMDB0004119 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Selenohomocysteine |
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| Description | Selenohomocysteine (CAS: 29412-93-9) is the precursor of selenocysteine, which is synthesized by the catalysis of cystathionine beta-synthase (EC 4.2.1.22) and cystathionine gamma-lyase (EC 4.4.1.1) in mammalian systems (both enzymes require pyridoxal phosphate). Selenohomocysteine (lactone) has been found to be a competitive and irreversible inhibitor of lysyl oxidase; this may relate to the development of connective tissue defects seen in homocystinuria. L-Selenohomocysteine also can serve as a substituent donor in the beta-replacement reaction to yield selenocystathionine (PMID: 10609891 , 9405445 , 6456763 , 3338973 ). |
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| Structure | InChI=1S/C4H9NO2Se/c5-3(1-2-8)4(6)7/h3,8H,1-2,5H2,(H,6,7)/t3-/m0/s1 |
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| Synonyms | | Value | Source |
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| Seleno-L-homocysteine | ChEBI | | (2S)-2-Amino-4-selanylbutanoic acid | HMDB | | (2S)-2-Amino-4-selenylbutanoic acid | HMDB | | 2-Amino-4-selenobutanoic acid | HMDB | | L-Selenohomocysteine | HMDB | | Selenohomocysteine | ChEBI |
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| Chemical Formula | C4H9NO2Se |
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| Average Molecular Weight | 182.092 |
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| Monoisotopic Molecular Weight | 182.979851 |
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| IUPAC Name | (2S)-2-amino-4-selanylbutanoic acid |
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| Traditional Name | (2S)-2-amino-4-selanylbutanoic acid |
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| CAS Registry Number | 29475-60-3 |
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| SMILES | N[C@@H](CC[SeH])C(O)=O |
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| InChI Identifier | InChI=1S/C4H9NO2Se/c5-3(1-2-8)4(6)7/h3,8H,1-2,5H2,(H,6,7)/t3-/m0/s1 |
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| InChI Key | RCWCGLALNCIQNM-VKHMYHEASA-N |
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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
- Amine
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Selenol
- 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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| Ontology |
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| Physiological effect | Not Available |
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| Disposition | |
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| Process | |
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| Role | Not Available |
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| Physical Properties |
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| State | Solid |
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| Experimental Molecular Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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| Experimental Chromatographic Properties | Not Available |
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| Predicted Molecular Properties | |
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| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 395.4 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 471.3 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 330.6 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 47.9 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 206.3 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 70.2 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 288.8 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 228.6 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 826.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 579.7 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 38.4 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 667.4 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 202.6 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 275.3 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 719.3 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 525.9 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 452.5 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Selenohomocysteine,1TMS,isomer #1 | C[Si](C)(C)OC(=O)[C@@H](N)CC[SeH] | 1417.6 | Semi standard non polar | 33892256 | | Selenohomocysteine,1TMS,isomer #2 | C[Si](C)(C)N[C@@H](CC[SeH])C(=O)O | 1501.1 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TMS,isomer #1 | C[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C | 1529.5 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TMS,isomer #1 | C[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C | 1400.9 | Standard non polar | 33892256 | | Selenohomocysteine,2TMS,isomer #1 | C[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C | 1496.6 | Standard polar | 33892256 | | Selenohomocysteine,2TMS,isomer #2 | C[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C | 1646.1 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TMS,isomer #2 | C[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C | 1450.7 | Standard non polar | 33892256 | | Selenohomocysteine,2TMS,isomer #2 | C[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C | 1666.4 | Standard polar | 33892256 | | Selenohomocysteine,3TMS,isomer #1 | C[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C)[Si](C)(C)C | 1694.6 | Semi standard non polar | 33892256 | | Selenohomocysteine,3TMS,isomer #1 | C[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C)[Si](C)(C)C | 1521.3 | Standard non polar | 33892256 | | Selenohomocysteine,3TMS,isomer #1 | C[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C)[Si](C)(C)C | 1463.6 | Standard polar | 33892256 | | Selenohomocysteine,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC(=O)[C@@H](N)CC[SeH] | 1661.1 | Semi standard non polar | 33892256 | | Selenohomocysteine,1TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N[C@@H](CC[SeH])C(=O)O | 1756.4 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C(C)(C)C | 2014.4 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C(C)(C)C | 1808.8 | Standard non polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N[C@@H](CC[SeH])C(=O)O[Si](C)(C)C(C)(C)C | 1759.4 | Standard polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C(C)(C)C | 2101.1 | Semi standard non polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C(C)(C)C | 1851.0 | Standard non polar | 33892256 | | Selenohomocysteine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N([C@@H](CC[SeH])C(=O)O)[Si](C)(C)C(C)(C)C | 1842.5 | Standard polar | 33892256 | | Selenohomocysteine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2365.7 | Semi standard non polar | 33892256 | | Selenohomocysteine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2114.9 | Standard non polar | 33892256 | | Selenohomocysteine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC(=O)[C@H](CC[SeH])N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1866.9 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (1 TMS) - 70eV, Positive | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (1 TMS) - 70eV, Positive | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (2 TMS) - 70eV, Positive | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (2 TMS) - 70eV, Positive | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (3 TMS) - 70eV, Positive | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Selenohomocysteine GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 10V, Positive-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 20V, Positive-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 40V, Positive-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 10V, Negative-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 20V, Negative-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 40V, Negative-QTOF | Not Available | 2020-06-30 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 10V, Positive-QTOF | splash10-001r-0900000000-318a72e0640a3bf0c621 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 20V, Positive-QTOF | splash10-052r-4900000000-96055a094d8a50c4f6b6 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 40V, Positive-QTOF | splash10-0a4i-9200000000-5dc39097afe4e4bed135 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 10V, Negative-QTOF | splash10-001i-0900000000-0c45ce9a6badcd1b332d | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 20V, Negative-QTOF | splash10-001i-0900000000-c45bdeb4f1096aae7a04 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Selenohomocysteine 40V, Negative-QTOF | splash10-005c-3900000000-af999ad987893e7056d3 | 2021-09-24 | Wishart Lab | View Spectrum |
NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum |
IR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-03 | FELIX lab | View Spectrum | | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-03 | FELIX lab | View Spectrum | | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-03 | FELIX lab | View Spectrum |
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| General References | - Esaki N, Nakamura T, Tanaka H, Suzuki T, Morino Y, Soda K: Enzymatic synthesis of selenocysteine in rat liver. Biochemistry. 1981 Jul 21;20(15):4492-6. [PubMed:6456763 ]
- Soda K, Oikawa T, Esaki N: Vitamin B6 enzymes participating in selenium amino acid metabolism. Biofactors. 1999;10(2-3):257-62. [PubMed:10609891 ]
- Liu G, Nellaiappan K, Kagan HM: Irreversible inhibition of lysyl oxidase by homocysteine thiolactone and its selenium and oxygen analogues. Implications for homocystinuria. J Biol Chem. 1997 Dec 19;272(51):32370-7. [PubMed:9405445 ]
- Esaki N, Seraneeprakarn V, Tanaka H, Soda K: Purification and characterization of Clostridium sticklandii D-selenocystine alpha, beta-lyase. J Bacteriol. 1988 Feb;170(2):751-6. [PubMed:3338973 ]
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