RefMet Compound Details

MW structure37075 (View MW Metabolite Database details)
RefMet nameCystathionine
Systematic name(2S)-2-amino-4-{[(2R)-2-amino-2-carboxyethyl]sulfanyl}butanoic acid
Exact mass222.067430 (neutral)
Calculate m/z:   
View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
FormulaC7H14N2O4SView other entries in RefMet with this formula
InChIKeyILRYLPWNYFXEMH-WHFBIAKZSA-NView other enantiomers/diastereomers of this metabolite in RefMet
Super ClassOrganic acids
Main ClassAmino acids and peptides
Sub ClassAmino acids
Pubchem CID439258
Annotation level1   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)
Human quantitationView measurements in targeted assays on human samples

Table of KEGG reactions in human pathways involving Cystathionine

Rxn IDKEGG ReactionEnzyme
R01286 L-Cystathionine + H2O <=> L-Homocysteine + Ammonia + PyruvateL-cystathionine L-homocysteine-lyase (deaminating
R01290 L-Serine + L-Homocysteine <=> L-Cystathionine + H2OL-serine hydro-lyase (adding homocysteine
R01001 L-Cystathionine + H2O <=> L-Cysteine + Ammonia + 2-OxobutanoateL-cystathionine cysteine-lyase (deaminating
R10305 O-Acetyl-L-serine + L-Homocysteine <=> L-Cystathionine + AcetateO3-acetyl-L-serine:L-homocysteine S-(2-amino-2-carboxyethyl)transferase

Table of KEGG human pathways containing Cystathionine

Pathway IDHuman Pathway# of reactions
hsa00270 Cysteine and methionine metabolism 3
hsa00260 Glycine, serine and threonine metabolism 2
hsa01230 Biosynthesis of amino acids 2