L-Cystathionine (ECMDB00099) (M2MDB000038)
Record Information | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Version | 2.0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Creation Date | 2012-05-31 09:57:21 -0600 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Update Date | 2015-09-13 12:56:06 -0600 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Secondary Accession Numbers |
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Identification | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Name: | L-Cystathionine | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Description | Cystathionine is an intermediate in the synthesis of cysteine. It is generated from homocysteine and serine by cystathionine beta synthase. It is cleaved into cysteine and ketobutyrate by cystathionine gamma-lyase. (Wikipedia) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Structure | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Synonyms: |
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Chemical Formula: | C7H14N2O4S | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Weight: | Average: 222.262 Monoisotopic: 222.067427636 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
InChI Key: | ILRYLPWNYFXEMH-WHFBIAKZSA-N | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
InChI: | InChI=1S/C7H14N2O4S/c8-4(6(10)11)1-2-14-3-5(9)7(12)13/h4-5H,1-3,8-9H2,(H,10,11)(H,12,13)/t4-,5-/m0/s1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CAS number: | 56-88-2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
IUPAC Name: | (2S)-2-amino-4-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}butanoic acid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Traditional IUPAC Name: | L-cystathionine | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SMILES: | N[C@@H](CCSC[C@H](N)C(O)=O)C(O)=O | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical Taxonomy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Description | belongs to the class of organic compounds known as l-cysteine-s-conjugates. L-cysteine-S-conjugates are compounds containing L-cysteine where the thio-group is conjugated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Kingdom | Organic compounds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Super Class | Organic acids and derivatives | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Class | Carboxylic acids and derivatives | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sub Class | Amino acids, peptides, and analogues | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Direct Parent | L-cysteine-S-conjugates | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Alternative Parents | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Substituents |
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Molecular Framework | Aliphatic acyclic compounds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
External Descriptors |
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Physical Properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
State: | Solid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Charge: | 0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Melting point: | 312 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Experimental Properties: |
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Predicted Properties |
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Biological Properties | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cellular Locations: | Cytoplasm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reactions: | L-Cystathionine + Water > L-Homocysteine + Ammonium + Pyruvic acid L-Cysteine + O-Succinyl-L-homoserine <> L-Cystathionine + Hydrogen ion + Succinic acid L-Cystathionine + Water <> L-Homocysteine + Ammonia + Pyruvic acid o-acetyl-l-homoserine + L-Cysteine <> L-Cystathionine + Acetic acid O-Succinyl-L-homoserine + L-Cysteine <> L-Cystathionine + Succinic acid L-Cystathionine + Water > Hydrogen ion + Pyruvic acid + Ammonia + L-Homocysteine L-Cysteine + O-Succinyl-L-homoserine > Hydrogen ion + Succinic acid + L-Cystathionine L-Cystathionine + Water > L-Homocysteine + Ammonia + Pyruvic acid O-Succinyl-L-homoserine + L-Cysteine > L-Cystathionine + Succinic acid L-Cystathionine + Water + 2-Aminoacrylic acid + 2-Iminopropanoate <> L-Homocysteine + Pyruvic acid + Ammonia L-Cystathionine > Hydrogen ion + Homocysteine + 2-aminoprop-2-enoate + Homocysteine | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SMPDB Pathways: |
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KEGG Pathways: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EcoCyc Pathways: |
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Concentrations | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not Available | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Spectra | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Spectra: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
References | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
References: |
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Synthesis Reference: | Yamagata, Shuzo; Akamatsu, Tsuyoshi; Iwama, Tomonori. Immobilization of Saccharomyces cerevisiae cystathionine gamma-lyase and application of the product to cystathionine synthesis. Applied and Environmental Microbiology (2004), 70(6), 3766-3768. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Material Safety Data Sheet (MSDS) | Download (PDF) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Links | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
External Links: |
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Enzymes
- General function:
- Involved in pyridoxal phosphate binding
- Specific function:
- O(4)-succinyl-L-homoserine + L-cysteine = L- cystathionine + succinate
- Gene Name:
- metB
- Uniprot ID:
- P00935
- Molecular weight:
- 41550
Reactions
O(4)-succinyl-L-homoserine + L-cysteine = L-cystathionine + succinate. |
- General function:
- Involved in pyridoxal phosphate binding
- Specific function:
- L-cystathionine + H(2)O = L-homocysteine + NH(3) + pyruvate
- Gene Name:
- metC
- Uniprot ID:
- P06721
- Molecular weight:
- 43212
Reactions
L-cystathionine + H(2)O = L-homocysteine + NH(3) + pyruvate. |
- General function:
- Involved in transferase activity
- Specific function:
- Acts as a beta-cystathionase and as a repressor of the maltose regulon
- Gene Name:
- malY
- Uniprot ID:
- P23256
- Molecular weight:
- 43641
Reactions
L-cystathionine + H(2)O = L-homocysteine + NH(3) + pyruvate. |
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- dppB
- Uniprot ID:
- P0AEF8
- Molecular weight:
- 37497
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- dppC
- Uniprot ID:
- P0AEG1
- Molecular weight:
- 32308
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for oligopeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- oppB
- Uniprot ID:
- P0AFH2
- Molecular weight:
- 33443
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for oligopeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- oppC
- Uniprot ID:
- P0AFH6
- Molecular weight:
- 33022
Transporters
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- dppB
- Uniprot ID:
- P0AEF8
- Molecular weight:
- 37497
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- dppC
- Uniprot ID:
- P0AEG1
- Molecular weight:
- 32308
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for oligopeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- oppB
- Uniprot ID:
- P0AFH2
- Molecular weight:
- 33443
- General function:
- Involved in transporter activity
- Specific function:
- Part of the binding-protein-dependent transport system for oligopeptides; probably responsible for the translocation of the substrate across the membrane
- Gene Name:
- oppC
- Uniprot ID:
- P0AFH6
- Molecular weight:
- 33022
- General function:
- Involved in transporter activity
- Specific function:
- Involved in a peptide intake transport system that plays a role in the resistance to antimicrobial peptides
- Gene Name:
- sapB
- Uniprot ID:
- P0AGH3
- Molecular weight:
- 36038
- General function:
- Involved in transporter activity
- Specific function:
- Involved in a peptide intake transport system that plays a role in the resistance to antimicrobial peptides
- Gene Name:
- sapC
- Uniprot ID:
- P0AGH5
- Molecular weight:
- 31548
- General function:
- Involved in peptide transporter activity
- Specific function:
- Proton-dependent permease that transports di- and tripeptides. Has a clear preference for dipeptides and tripeptides composed of L-amino acids, and discriminates dipeptides on the basis of the position of charges within the substrate
- Gene Name:
- dtpB
- Uniprot ID:
- P36837
- Molecular weight:
- 53575
- General function:
- Involved in peptide transporter activity
- Specific function:
- Probable proton-dependent permease that transports di- and tripeptides. Shows significantly higher specificity towards dipeptides
- Gene Name:
- yjdL
- Uniprot ID:
- P39276
- Molecular weight:
- 53054
- General function:
- Involved in peptide transporter activity
- Specific function:
- Probable proton-dependent permease that transports dipeptides
- Gene Name:
- dtpD
- Uniprot ID:
- P75742
- Molecular weight:
- 54158
- General function:
- Involved in peptide transporter activity
- Specific function:
- Proton-dependent permease that transports di- and tripeptides as well as structurally related peptidomimetics such as aminocephalosporins into the cell. Has a clear preference for dipeptides and tripeptides composed of L-amino acids, and discriminates dipeptides on the basis of the position of charges within the substrate
- Gene Name:
- dtpA
- Uniprot ID:
- P77304
- Molecular weight:
- 53991