α-Chymotrypsin-catalyzed synthesis of poly-l-cysteine in a frozen aqueous solution
Keywords: ATEE, N-acetyl-l-tyrosine ethyl ester; Cys-OEt, l-cysteine ethyl ester; DP, degree of polymerization; DTNB, 5,5′-dithiobis (2-nitrobenoic acid); MALDI-TOFMS, matrix assisted laser desorption/ionization time of flight mass spectrometry; PLCys, poly-l-cyste