Record Information |
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Version | 2.0 |
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Creation Date | 2014-08-29 06:09:33 UTC |
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Update Date | 2018-03-21 17:46:13 UTC |
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Accession Number | T3D4262 |
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Identification |
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Common Name | 3-Hydroxymethylglutaric acid |
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Class | Small Molecule |
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Description | 3-Hydroxymethylglutaric acid is an "off-product" intermediate in the leucine degradation process. It is produced by defective or inefficient versions of 3-hydroxy-3-methylglutaryl-CoA lyase, an enzyme that normally catalyzes the conversion of 3-hydroxy-3-methylglutaryl-CoA to acetyl-CoA and acetoacetate. If this enzyme is defective, 3-hydroxy-3-methylglutaryl-CoA will accumulate in the mitochondria. Increased concentrations of 3-hydroxy-3-methylglutaryl-CoA can lead to a disruption of the esterified CoA:free CoA ratio and ultimately to mitochondrial toxicity. Detoxification of these CoA end products occurs via the transfer of the 3-hydroxymethylglutaryl moiety to carnitine, forming 3-hydroxymethylglutaric-carnitine, which is then transferred across the inner mitochondrial membrane where 3-hydroxymethylglutaric acid is released as the free acid. 3-Hydroxymethylglutaric acid has been found to accumulate in the urine of patients affected by 3-Hydroxy-3-methylglutaric aciduria, a rare inborn error of metabolism (OMIM: 246450). 3-Hydroxy-3-methylglutaric aciduria is caused by significantly reduced enzyme activity of the intramitochondrial 3-hydroxy-3-methylglutaryl-CoA lyase (EC 4.1.3.4), the enzyme that catalyzes the final step of leucine degradation. This enzyme also plays a key role in ketone body formation. The profile of urinary organic acids for individuals with 3-hydroxy-3-methylglutaric aciduria is different from that of the other identified defects of leucine degradation, such as maple syrup urine disease (OMIM: 248600), isovaleric acidemia (OMIM: 243500), and methylcrotonylglycinemia (OMIM: 210200). The urinary organic acid profile of 3-hydroxy-3-methylglutaric aciduria includes elevated concentrations of 3-hydroxy-3-isovaleric, 3-hydroxy-3-methylglutaric, 3-methylglutaconic, and 3-methylglutaric acids (PMID: 10916782, 9658458, 3063529). Clinical manifestations of 3-hydroxy-3-methylglutaric aciduria include hepatomegaly, lethargy, coma, and apnea. Biochemically, there is a characteristic absence of ketosis with hypoglycemia, acidosis, hypertransaminasemia, and variable hyperammonemia. Therefore, when present in sufficiently high concentrations, 3-hydroxymethylglutaric acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. As noted above, chronically high levels of 3-hydroxymethylglutaric acid are associated with the inborn error of metabolism 3-hydroxy-3-methylglutaryl-CoA lyase deficiency. 3-Hydroxymethylglutaric acid is an organic acid. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of the untreated IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. See less | 3-Hydroxymethylglutaric acid is an "off-product" intermediate in the leucine degradation process. It is produced by defective or inefficient versions of 3-hydroxy-3-methylglutaryl-CoA lyase, an enzyme that normally catalyzes the conversion of 3-hydroxy-3-methylglutaryl-CoA to acetyl-CoA and acetoacetate. If this enzyme is defective, 3-hydroxy-3-methylglutaryl-CoA will accumulate in the mitochondria. Increased concentrations of 3-hydroxy-3-methylglutaryl-CoA can lead to a disruption of the esterified CoA:free CoA ratio and ultimately to mitochondrial toxicity. Detoxification of these CoA end products occurs via the transfer of the 3-hydroxymethylglutaryl moiety to carnitine, forming 3-hydroxymethylglutaric-carnitine, which is then transferred across the inner mitochondrial membrane where 3-hydroxymethylglutaric acid is released as the free acid. 3-Hydroxymethylglutaric acid has been found to accumulate in the urine of patients affected by 3-Hydroxy-3-methylglutaric aciduria, a rare inborn error of metabolism (OMIM: 246450). 3-Hydroxy-3-methylglutaric aciduria is caused by significantly reduced enzyme activity of the intramitochondrial 3-hydroxy-3-methylglutaryl-CoA lyase (EC 4.1.3.4), the enzyme that catalyzes the final step of leucine degradation. This enzyme also plays a key role in ketone body formation. The profile of urinary organic acids for individuals with 3-hydroxy-3-methylglutaric aciduria is different from that of the other identified defects of leucine degradation, such as maple syrup urine disease (OMIM: 248600), isovaleric acidemia (OMIM: 243500), and methylcrotonylglycinemia (OMIM: 210200). The urinary organic acid profile of 3-hydroxy-3-methylglutaric aciduria includes elevated concentrations of 3-hydroxy-3-isovaleric, 3-hydroxy-3-methylglutaric, 3-methylglutaconic, and 3-methylglutaric acids (PMID: 10916782, 9658458, 3063529). Clinical manifestations of 3-hydroxy-3-methylglutaric aciduria include hepatomegaly, lethargy, coma, and apnea. ...Read more |
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Compound Type | - Animal Toxin
- Hypolipidemic Agent
- Metabolite
- Natural Compound
- Organic Compound
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Chemical Structure | |
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Synonyms | |
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Chemical Formula | C6H10O5 |
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Average Molecular Mass | 162.141 g/mol |
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Monoisotopic Mass | 162.053 g/mol |
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CAS Registry Number | 503-49-1 |
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IUPAC Name | 3-hydroxy-3-methylpentanedioic acid |
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Traditional Name | meglutol |
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SMILES | CC(O)(CC(O)=O)CC(O)=O |
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InChI Identifier | InChI=1S/C6H10O5/c1-6(11,2-4(7)8)3-5(9)10/h11H,2-3H2,1H3,(H,7,8)(H,9,10) |
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InChI Key | InChIKey=NPOAOTPXWNWTSH-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group. |
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Kingdom | Organic compounds |
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Super Class | Lipids and lipid-like molecules |
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Class | Fatty Acyls |
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Sub Class | Fatty acids and conjugates |
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Direct Parent | Hydroxy fatty acids |
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Alternative Parents | |
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Substituents | - Methyl-branched fatty acid
- Short-chain hydroxy acid
- Hydroxy fatty acid
- Branched fatty acid
- Dicarboxylic acid or derivatives
- Tertiary alcohol
- Carboxylic acid
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- Alcohol
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Biological Properties |
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Status | Detected and Not Quantified |
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Origin | Endogenous |
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Cellular Locations | |
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Biofluid Locations | Not Available |
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Tissue Locations | Not Available |
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Pathways | Name | SMPDB Link | KEGG Link |
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3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency | SMP00138 | Not Available |
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Applications | |
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Biological Roles | |
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Chemical Roles | |
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Physical Properties |
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State | Solid |
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Appearance | White powder. |
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Experimental Properties | Property | Value |
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Melting Point | 105°C | Boiling Point | Not Available | Solubility | Not Available | LogP | Not Available |
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Predicted Properties | |
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Spectra |
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Spectra | Spectrum Type | Description | Splash Key | Deposition Date | View |
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GC-MS | GC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized) | splash10-0002-0930000000-67cdb23f1a51498bb80d | 2014-06-16 | View Spectrum | GC-MS | GC-MS Spectrum - GC-MS (3 TMS) | splash10-05nb-2950000000-10da019551eceff729ec | 2014-06-16 | View Spectrum | GC-MS | GC-MS Spectrum - EI-B (Non-derivatized) | splash10-0002-0960000000-75a1f0bc3ffb60117676 | 2017-09-12 | View Spectrum | GC-MS | GC-MS Spectrum - GC-EI-TOF (Non-derivatized) | splash10-0002-0930000000-67cdb23f1a51498bb80d | 2017-09-12 | View Spectrum | GC-MS | GC-MS Spectrum - GC-MS (Non-derivatized) | splash10-05nb-2950000000-10da019551eceff729ec | 2017-09-12 | View Spectrum | GC-MS | GC-MS Spectrum - GC-EI-TOF (Non-derivatized) | splash10-0002-0920000000-77008c8c7fb6eb798e79 | 2017-09-12 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive | splash10-0udi-4900000000-ae0329f185525bab6028 | 2017-09-01 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positive | splash10-0079-9253000000-af0bf7551c9147193ed4 | 2017-10-06 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TMS_2_2) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TBDMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TBDMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TBDMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TBDMS_2_2) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (TBDMS_3_1) - 70eV, Positive | Not Available | 2021-11-05 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated) | splash10-05fr-2900000000-d5b3d7ccc3617f392a63 | 2012-07-24 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated) | splash10-004i-9800000000-1a510972071bf02a23f7 | 2012-07-24 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated) | splash10-0kdi-9300000000-6afee652d0eb18e589c3 | 2012-07-24 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative | splash10-03di-0900000000-ae679b03ae8cdbc1cc40 | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative | splash10-0002-9300000000-8d7565d3b9cbed5d13ac | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative | splash10-0a4i-9000000000-d06ad8ce44567793a49d | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative | splash10-0a4i-9000000000-f3c4c2c0cb3ff49db482 | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative | splash10-0a4i-9000000000-98c0337e0bebe4fefe6c | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Positive | splash10-01qa-2900000000-182405b2867309ab7df8 | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Negative | splash10-03dj-5900000000-d9ffa79e6b62296f2626 | 2012-08-31 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-03di-0900000000-2847ca367167b7cf107b | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0002-9300000000-f9ab44912911fd1e9ec7 | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9000000000-589bf77ae5f575911b64 | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9000000000-f3c4c2c0cb3ff49db482 | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ , negative | splash10-0a4i-9000000000-98c0337e0bebe4fefe6c | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF , negative | splash10-03dj-5900000000-d9ffa79e6b62296f2626 | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF , positive | splash10-01qa-2900000000-182405b2867309ab7df8 | 2017-09-14 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - 20V, Negative | splash10-0a4i-9000000000-f94de43a0b43873232bf | 2021-09-20 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - 10V, Negative | splash10-0a4j-9300000000-9861bfd5df213d5b52e4 | 2021-09-20 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Positive | splash10-0002-0900000000-a3631689983e6d6a3be7 | 2015-04-24 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Positive | splash10-002b-2900000000-54e16eaede819dea2bdc | 2015-04-24 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Positive | splash10-000i-9600000000-31a4e319505eebd3d1d1 | 2015-04-24 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Negative | splash10-03xr-2900000000-405383db70ec0564b916 | 2015-04-25 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Negative | splash10-07bg-5900000000-dfc057320722ae1d926c | 2015-04-25 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Negative | splash10-0a4m-9300000000-e5a720c14cbc5de82d4d | 2015-04-25 | View Spectrum | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, experimental) | Not Available | 2012-12-04 | View Spectrum | 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | Not Available | 2012-12-05 | View Spectrum |
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Toxicity Profile |
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Route of Exposure | Not Available |
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Mechanism of Toxicity | Not Available |
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Metabolism | Not Available |
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Toxicity Values | Not Available |
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Lethal Dose | Not Available |
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Carcinogenicity (IARC Classification) | No indication of carcinogenicity to humans (not listed by IARC). |
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Uses/Sources | This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation. |
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Minimum Risk Level | Not Available |
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Health Effects | Chronically high levels of 3-hydroxymethylglutaric acid are associated with the inborn error of metabolism: 3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency. |
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Symptoms | Not Available |
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Treatment | Not Available |
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Normal Concentrations |
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| Not Available |
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Abnormal Concentrations |
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| Not Available |
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External Links |
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DrugBank ID | DB04377 |
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HMDB ID | HMDB00355 |
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PubChem Compound ID | 1662 |
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ChEMBL ID | CHEMBL50444 |
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ChemSpider ID | 1600 |
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KEGG ID | C03761 |
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UniProt ID | Not Available |
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OMIM ID | |
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ChEBI ID | 16831 |
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BioCyc ID | Not Available |
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CTD ID | Not Available |
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Stitch ID | Not Available |
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PDB ID | MAH |
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ACToR ID | Not Available |
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Wikipedia Link | 3-Hydroxy-3-methylglutaric acid |
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References |
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Synthesis Reference | Luigi Turbanti, Giorgio Garzelli, “Process for preparation of 3-hydroxy-3-methyl-glutaric acid.” U.S. Patent US4966993, issued October, 1985. |
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MSDS | Link |
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General References | - Koling S, Kalhoff H, Schauerte P, Lehnert W, Diekmann L: [3-hydroxy-3-methylglutaraciduria (case report of a female Turkish sisters with 3-hydroxy-3- methylglutaryl-Coenzyme A lyase deficiency]. Klin Padiatr. 2000 May-Jun;212(3):113-6. [10916782 ]
- Eiris J, Ribes A, Fernandez-Prieto R, Rodriguez-Garcia J, Rodriguez-Segade S, Castro-Gago M: [3-hydroxy-3-methylglutaric aciduria and recurrent Reye-like syndrome]. Rev Neurol. 1998 Jun;26(154):911-4. [9658458 ]
- Gibson KM, Breuer J, Nyhan WL: 3-Hydroxy-3-methylglutaryl-coenzyme A lyase deficiency: review of 18 reported patients. Eur J Pediatr. 1988 Dec;148(3):180-6. [3063529 ]
- Mitchell GA, Jakobs C, Gibson KM, Robert MF, Burlina A, Dionisi-Vici C, Dallaire L: Molecular prenatal diagnosis of 3-hydroxy-3-methylglutaryl CoA lyase deficiency. Prenat Diagn. 1995 Aug;15(8):725-9. [7479590 ]
- Fu Z, Runquist JA, Forouhar F, Hussain M, Hunt JF, Miziorko HM, Kim JJ: Crystal structure of human 3-hydroxy-3-methylglutaryl-CoA Lyase: insights into catalysis and the molecular basis for hydroxymethylglutaric aciduria. J Biol Chem. 2006 Mar 17;281(11):7526-32. Epub 2005 Dec 5. [16330550 ]
- Guneral F, Bachmann C: Age-related reference values for urinary organic acids in a healthy Turkish pediatric population. Clin Chem. 1994 Jun;40(6):862-6. [8087979 ]
- Wysocki SJ, Wilkinson SP, Hahnel R, Wong CY, Panegyres PK: 3-Hydroxy-3-methylglutaric aciduria, combined with 3-methylglutaconic aciduria. Clin Chim Acta. 1976 Aug 2;70(3):399-406. [947633 ]
- Tuchman M, McCann MT, Johnson PE, Lemieux B: Screening newborns for multiple organic acidurias in dried filter paper urine samples: method development. Pediatr Res. 1991 Oct;30(4):315-21. [1956713 ]
- Truscott RJ, Halpern B, Wysocki SJ, Hahnel R, Wilcken B: Studies on a child suspected of having a dficiency in 3-hydroxy-3-methylglutaryl-Co A lyase. Clin Chim Acta. 1979 Jul 2;95(1):11-16. [509721 ]
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Gene Regulation |
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Up-Regulated Genes | Not Available |
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Down-Regulated Genes | Not Available |
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