Purification and characterization of acetone cyanohydrin lyase from Linum usitatissimum
作者:Lang-Lai Xu、Bijay K. Singh、Eric E. Conn
DOI:10.1016/0003-9861(88)90634-0
日期:1988.6
The hydroxynitrile lyase (EC 4.1.2.--) which catalyzes the dissociation of the cyanohydrins of acetone and 2-butanone has been isolated and purified from young seedlings of flax (Linum usitatissimum L.). The purification procedure involved precipitation with (NH4)2SO4, chromatofocusing, and chromatography on DEAE-cellulose, hydroxylapatite, Sephacryl 200, and Matrex Red A gel columns with a final recovery
从亚麻的年轻幼苗(Linum usitatissimum L.)中分离纯化出催化丙酮和2-丁酮氰醇分解的羟腈裂解酶(EC 4.1.2 .--)。纯化程序涉及用(NH4)2SO4沉淀,色谱聚焦和在DEAE-纤维素,羟磷灰石,Sephacryl 200和Matrex Red A凝胶柱上进行色谱分离,最终回收率为21%。136倍的纯化产生了看似均质的制剂,与从李属物种中分离的裂解酶相反,它不是黄素蛋白。在十二烷基硫酸钠存在下,通过凝胶电泳估计亚基分子量为42,000。通过凝胶过滤(HPLC)估计该酶的天然分子量为82,000。该酶的最适pH范围约为5。