Cystathionine

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Cystathionine
Skeletal formula
Ball-and-stick model
Identifiers
CAS number 56-88-2 YesY
PubChem 834
ChemSpider 811 YesY
KEGG C00542 YesY
MeSH Cystathionine
ChEBI CHEBI:17755 YesY
ChEMBL CHEMBL209241 YesY
Jmol-3D images Image 1
Properties
Molecular formula C7H14N2O4S
Molar mass 222.263 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

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 α-ketobutyrate by cystathionine gamma-lyase.

An excess in the urine is called cystathioninuria.

Cysteine metabolism. Cystathionine beta synthase catalyzes the upper reaction and cystathionine gamma-lyase catalyzes the lower reaction.