Canmetcon
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Identification
YMDB IDYMDB00245
NameL-Cystathionine
SpeciesSaccharomyces cerevisiae
StrainBaker's yeast
DescriptionCystathionine 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 α-ketobutyrate by cystathionine gamma-lyase. [Wikipedia]
Structure
Thumb
Synonyms
  • (R)-S-(2-amino-2-carboxyethyl)-L-Homocysteine
  • [R-(R*,S*)]-2-amino-4-[(2-amino-2-carboxyethyl)thio]-Butanoate
  • [R-(R*,S*)]-2-amino-4-[(2-amino-2-carboxyethyl)thio]-Butanoic acid
  • Cystathionine
  • L-(+)-Cystathionine
  • S-[(2R)-2-amino-2-carboxyethyl]-L-Homocysteine
  • S-(beta-Amino-beta-carboxyethyl)homocysteine
  • S-(b-Amino-b-carboxyethyl)homocysteine
  • S-(Β-amino-β-carboxyethyl)homocysteine
CAS number56-88-2
WeightAverage: 222.262
Monoisotopic: 222.067427636
InChI KeyILRYLPWNYFXEMH-WHFBIAKZSA-N
InChIInChI=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
IUPAC Name(2S)-2-amino-4-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}butanoic acid
Traditional IUPAC NameL-cystathionine
Chemical FormulaC7H14N2O4S
SMILES[H]OC(=O)[C@@]([H])(N([H])[H])C([H])([H])SC([H])([H])C([H])([H])[C@]([H])(N([H])[H])C(=O)O[H]
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.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentL-cysteine-S-conjugates
Alternative Parents
Substituents
  • L-cysteine-s-conjugate
  • Alpha-amino acid
  • L-alpha-amino acid
  • Thia fatty acid
  • Dicarboxylic acid or derivatives
  • Fatty acyl
  • Fatty acid
  • Amino acid
  • Carboxylic acid
  • Thioether
  • Dialkylthioether
  • Sulfenyl compound
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Primary amine
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Primary aliphatic amine
  • Organopnictogen compound
  • Organic oxygen compound
  • Carbonyl group
  • Amine
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physical Properties
StateSolid
Charge0
Melting point312 °C
Experimental Properties
PropertyValueReference
Water Solubility22 mg/mL [HMP experimental]PhysProp
LogPNot AvailablePhysProp
Predicted Properties
PropertyValueSource
Water Solubility17.3 g/LALOGPS
logP-4ALOGPS
logP-5.8ChemAxon
logS-1.1ALOGPS
pKa (Strongest Acidic)1.79ChemAxon
pKa (Strongest Basic)9.66ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area126.64 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity51.57 m³·mol⁻¹ChemAxon
Polarizability22.02 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations
  • cytoplasm
Organoleptic PropertiesNot Available
SMPDB Pathways
Cysteine MetabolismPW002383 ThumbThumb?image type=greyscaleThumb?image type=simple
Sulfur metabolismPW002483 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways
Cysteine and methionine metabolismec00270 Map00270
Glycine, serine and threonine metabolismec00260 Map00260
Sulfur metabolismec00920 Map00920
SMPDB Reactions
Homocysteine + Pyruvic acid + Ammoniumwater + L-Cystathionine
Homocysteine + L-Serinewater + L-Cystathionine
water + L-CystathionineAmmonium + L-Cysteine + 2-Ketobutyric acid
KEGG Reactions
L-Cystathionine + waterL-Homocysteine + Pyruvic acid + Ammonium
L-Homocysteine + L-SerineL-Cystathionine + water
L-Cystathionine + waterL-Cysteine + Ammonium + 2-Ketobutyric acid
L-Cysteine + O-Acetyl-L-homoserineAcetic acid + L-Cystathionine + hydron
O-Succinyl-L-homoserine + L-CysteineL-Cystathionine + hydron + Succinic acid
Concentrations
Intracellular ConcentrationsNot Available
Extracellular ConcentrationsNot Available
Spectra
Spectra
References
References:
  • UniProt Consortium (2011). "Ongoing and future developments at the Universal Protein Resource." Nucleic Acids Res 39:D214-D219.21051339
  • Herrgard, M. J., Swainston, N., Dobson, P., Dunn, W. B., Arga, K. Y., Arvas, M., Bluthgen, N., Borger, S., Costenoble, R., Heinemann, M., Hucka, M., Le Novere, N., Li, P., Liebermeister, W., Mo, M. L., Oliveira, A. P., Petranovic, D., Pettifer, S., Simeonidis, E., Smallbone, K., Spasic, I., Weichart, D., Brent, R., Broomhead, D. S., Westerhoff, H. V., Kirdar, B., Penttila, M., Klipp, E., Palsson, B. O., Sauer, U., Oliver, S. G., Mendes, P., Nielsen, J., Kell, D. B. (2008). "A consensus yeast metabolic network reconstruction obtained from a community approach to systems biology." Nat Biotechnol 26:1155-1160.18846089
  • Jhee, K. H., McPhie, P., Miles, E. W. (2000). "Yeast cystathionine beta-synthase is a pyridoxal phosphate enzyme but, unlike the human enzyme, is not a heme protein." J Biol Chem 275:11541-11544.10766767
  • Castrillo, J. I., Zeef, L. A., Hoyle, D. C., Zhang, N., Hayes, A., Gardner, D. C., Cornell, M. J., Petty, J., Hakes, L., Wardleworth, L., Rash, B., Brown, M., Dunn, W. B., Broadhurst, D., O'Donoghue, K., Hester, S. S., Dunkley, T. P., Hart, S. R., Swainston, N., Li, P., Gaskell, S. J., Paton, N. W., Lilley, K. S., Kell, D. B., Oliver, S. G. (2007). "Growth control of the eukaryote cell: a systems biology study in yeast." J Biol 6:4.17439666
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.
External Links:
ResourceLink
CHEBI ID17482
HMDB IDHMDB00099
Pubchem Compound ID439258
Kegg IDC02291
ChemSpider ID388392
FOODB IDFDB001976
WikipediaCystathionine
BioCyc IDL-CYSTATHIONINE

Enzymes

General function:
Involved in pyridoxal phosphate binding
Specific function:
O(4)-succinyl-L-homoserine + L-cysteine = L- cystathionine + succinate
Gene Name:
Not Available
Uniprot ID:
Q04533
Molecular weight:
74312.70313
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-cysteine + NH(3) + 2-oxobutanoate
Gene Name:
CYS3
Uniprot ID:
P31373
Molecular weight:
42541.69922
Reactions
L-cystathionine + H(2)O → L-cysteine + NH(3) + 2-oxobutanoate.
General function:
Involved in pyridoxal phosphate binding
Specific function:
O(4)-succinyl-L-homoserine + L-cysteine = L- cystathionine + succinate
Gene Name:
Not Available
Uniprot ID:
Q12198
Molecular weight:
64222.80078
Reactions
O(4)-succinyl-L-homoserine + L-cysteine → L-cystathionine + succinate.
General function:
Involved in pyridoxal phosphate binding
Specific function:
O(4)-succinyl-L-homoserine + L-cysteine = L- cystathionine + succinate
Gene Name:
STR2
Uniprot ID:
P47164
Molecular weight:
72349.89844
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:
STR3
Uniprot ID:
P53101
Molecular weight:
51828.0
Reactions
L-cystathionine + H(2)O → L-homocysteine + NH(3) + pyruvate.
General function:
Involved in pyridoxal phosphate binding
Specific function:
L-cystathionine + H(2)O = L-homocysteine + NH(3) + pyruvate
Gene Name:
IRC7
Uniprot ID:
P43623
Molecular weight:
36971.10156
Reactions
L-cystathionine + H(2)O → L-homocysteine + NH(3) + pyruvate.
General function:
Involved in cysteine biosynthetic process from serine
Specific function:
L-serine + L-homocysteine = L-cystathionine + H(2)O
Gene Name:
CYS4
Uniprot ID:
P32582
Molecular weight:
56021.30078
Reactions
L-serine + L-homocysteine → L-cystathionine + H(2)O.