2- Amino-3-mercapto-propionic acid

L-Cysteine (Cys) (= (R)-2-Amino 3-mercapto-propionic acid (3-Mercapto-I -alanine)] (amino acid)... 

Cysteine, (Cys, C), a-amino-jS-mercapto-propionic acid, HS-CH2-CH(NH2)-COOH, C3H7NO2S, Mr 121.16 Da, a proteinogenic amino acid. 

The redox reactions of metal proteins such as cytochrome c (cyt. c) are known to be promoted by modifying electrodes with SAMs of nitrogen-containing heterocyclic molecules. SEIRAS studies of the modified electrodes directed toward the understanding the promotion mechanism have been reported. The systems reported so far are 2-pyridinethiol, 4-pyridinethiol (4-PySH), bis(2-pyridyl)disul-fide, bis(4-pyridyl)disulfide, 2-pyrimidinethiol, 6-amino-8-purinethiol, mercapto-propionic acid, mercaptoethanol, 4,4 -dithiodipyridine, and L-cysteine [95-99]. 

See Fhenacyl Mercaptan. Mercapto-amino-propionic Acid. 

Kil disheva, O. V., M. G. Lin kova, and I. L. Knunyants Transformations of the Mercapto Amino Acids V. 3-Halo-2-hydroxy-2-(acylamino)propionic Acids and Their Derivatives. Bull. Acad. Sci., U.S.S.R., Div. Chem. Sci. 1955, 241. Chem. Abstr. 50, 4914i (1956). 

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