L-cystathionine

L-cystathionine

[¦el ‚sis·tə′thī·ə‚nēn]
(biochemistry)
C7H14N2O4S An amino acid formed by condensation of homocysteine with serine, catalyzed by an enzyme transsulfurase; found in high concentration in the brain of primates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
We tested the interference in the enzymatic tCYS assay by adding L-HCY, L-methionine, L-cystathionine, and cysteinylglycine to plasma samples.
Analyte added tCYS, Interference, [micro]mol/L (a) % L-HCY, [micro]mol/L 0 147.0 50 139.5 -5.1 100 153.7 4.6 200 152.0 3.4 L-Methionine, [micro]mol/L 0 147.0 50 149.5 1.7 100 140.3 -4.6 200 133.7 -9.0 L-Cystathionine, [micro]mol/L 0 260.3 32.5 250.2 -3.8 65 257.0 -1.3 130 252.2 -3.8 Cysteinylglycine, [micro]mol/L 0 203.2 50 207.4 2.1 100 201.7 -0.7 200 206.4 1.6 (a) (Sample with added analyte - sample without added analyte)/sample without added analyte x 100%.
Homogeneous enzymatic colorimetric assay for total cysteine
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