Identification of cysteine residues in aspartate transaminase from pig-heart cytosol

Summary The two readily accessible cysteine residues (Cys-45 and Cys-82) and one completely masked residue (Cys-252) in the polypeptide chain of aspartate transaminase have been identified. The second completely masked cysteine residue is Cys-191.Institute of Molecular Biology, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 761–764, November–December, 1974.