| Record Information |
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| Version | 2.0 |
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| Created at | 2006-08-12 20:29:18 UTC |
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| Updated at | 2025-02-11 15:41:11 UTC |
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| NP-MRD ID | NP0000745 |
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| Secondary Accession Numbers | None |
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| Natural Product Identification |
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| Common Name | D-Cysteine |
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| Description | D-cysteine is an optically active form of cysteine having D-configuration. It is a cysteine and a D-alpha-amino acid. It is a conjugate base of a D-cysteinium. It is a conjugate acid of a D-cysteinate(1-). It is an enantiomer of a L-cysteine. It is a tautomer of a D-cysteine zwitterion. D-Cysteine, also known as D-cystein or DCY, belongs to the class of organic compounds known as cysteine and derivatives. Cysteine and derivatives are compounds containing cysteine or a derivative thereof resulting from reaction of cysteine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. It is a non-proteogenic sulfur-containing amino acid. D-Cysteine is known to be toxic to bacteria and several bacteria (and plants) have developed and enzyme called D-cysteine desulfhydrase (EC4.1.99.4). D-cysteine can be generated from D-Cysteine via cysteine racemase. D-Cysteine is a naturally occurring enantiomer of L-Cysteine. Cysteine is named after cystine, which comes from the Greek word kustis meaning bladder -cystine was first isolated from kidney stones. D-Cysteine exists in all living species, ranging from bacteria to humans. Outside of the human body, D-Cysteine has been detected, but not quantified in several different foods, such as chervils, fruits, lichee, nuts, and cherimoya. |
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| Structure | InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m1/s1 |
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| Synonyms | | Value | Source |
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| (2S)-2-Amino-3-mercaptopropanoic acid | ChEBI | | (2S)-2-Amino-3-sulfanylpropanoic acid | ChEBI | | (S)-2-Amino-3-mercaptopropanoic acid | ChEBI | | D-Amino-3-mercaptopropionic acid | ChEBI | | D-Cystein | ChEBI | | D-Zystein | ChEBI | | DCY | ChEBI | | (2S)-2-Amino-3-mercaptopropanoate | Generator | | (2S)-2-Amino-3-sulfanylpropanoate | Generator | | (2S)-2-Amino-3-sulphanylpropanoate | Generator | | (2S)-2-Amino-3-sulphanylpropanoic acid | Generator | | (S)-2-Amino-3-mercaptopropanoate | Generator | | D-Amino-3-mercaptopropionate | Generator | | Cysteine | HMDB | | Half cystine | HMDB | | Cysteine hydrochloride | HMDB | | Half-cystine | HMDB | | L-Cysteine | HMDB | | L Cysteine | HMDB | | Zinc cysteinate | HMDB |
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| Chemical Formula | C3H7NO2S |
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| Average Mass | 121.1500 Da |
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| Monoisotopic Mass | 121.01975 Da |
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| IUPAC Name | (2S)-2-amino-3-sulfanylpropanoic acid |
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| Traditional Name | L cysteine |
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| CAS Registry Number | 921-01-7 |
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| SMILES | N[C@H](CS)C(O)=O |
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| InChI Identifier | InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m1/s1 |
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| InChI Key | XUJNEKJLAYXESH-UWTATZPHSA-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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| 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, simulated) | Varshavi.d26 | | | 2021-08-31 | View Spectrum | | 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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| Not Available | | Chemical Shift Submissions |
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| | Spectrum Type | Description | Depositor Email | Depositor Organization | Depositor | Deposition Date | View |
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| 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, simulated) | v.dorna83@yahoo.com | Not Available | Not Available | 2021-08-03 | View Spectrum |
| | Species |
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| Species of Origin | |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as cysteine and derivatives. Cysteine and derivatives are compounds containing cysteine or a derivative thereof resulting from reaction of cysteine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. |
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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 | Cysteine and derivatives |
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| Alternative Parents | |
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| Substituents | - Cysteine or derivatives
- Alpha-amino acid
- D-alpha-amino acid
- Amino acid
- Alkylthiol
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Organic oxygen compound
- Primary amine
- Organosulfur compound
- Organooxygen compound
- Organonitrogen compound
- Organic nitrogen compound
- Primary aliphatic amine
- Carbonyl group
- Amine
- Hydrocarbon derivative
- Organopnictogen compound
- Organic oxide
- 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 | - Tsukamoto S, Kanegae T, Nagoya T, Shimamura M, Mieda Y, Nomura M, Hojo K, Okubo H: Effects of amino acids on acute alcohol intoxication in mice--concentrations of ethanol, acetaldehyde, acetate and acetone in blood and tissues. Arukoru Kenkyuto Yakubutsu Ison. 1990 Oct;25(5):429-40. [PubMed:2275637 ]
- Riemenschneider A, Wegele R, Schmidt A, Papenbrock J: Isolation and characterization of a D-cysteine desulfhydrase protein from Arabidopsis thaliana. FEBS J. 2005 Mar;272(5):1291-304. [PubMed:15720402 ]
- Shibuya N, Koike S, Tanaka M, Ishigami-Yuasa M, Kimura Y, Ogasawara Y, Fukui K, Nagahara N, Kimura H: A novel pathway for the production of hydrogen sulfide from D-cysteine in mammalian cells. Nat Commun. 2013;4:1366. doi: 10.1038/ncomms2371. [PubMed:23340406 ]
- Kimura H: Signaling molecules: hydrogen sulfide and polysulfide. Antioxid Redox Signal. 2015 Feb 10;22(5):362-76. doi: 10.1089/ars.2014.5869. Epub 2014 Jun 25. [PubMed:24800864 ]
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