PHOTO-CONTROL OF ENZYME ACTIVITY WITH A PHOTOCHROMIC SPIROPYRAN COMPOUND —MODIFICATION OF α-AMYLASE WITH SPIROPYRAN COMPOUND—
作者:Kenryo Namba、Shuichi Suzuki
DOI:10.1246/cl.1975.947
日期:1975.9.5
A photochromic α-amylase was prepared by chemical modification with a spiropyran compound and isolated with DEAE-Sephadex chromatography. The modified α-amylase showed the reverse photochromism in water. UV- or VS-light irradiation caused a decrease in enzyme activity of the modified enzyme. The initial activity could be recovered when the modified enzyme irradiated was kept in the dark.
利用螺吡喃化合物对α-淀粉酶进行化学修饰,制备了一种光致变色的α-淀粉酶,并利用DEAE-Sephadex色谱法对其进行了分离。修饰后的α-淀粉酶在水中呈现反向光致变色。紫外线或 VS 光照射会导致修饰酶的酶活性下降。在黑暗中保存照射过的改良酶,其初始活性可以恢复。
Diffraction from multiple gratings in holographic relaxation spectroscopy: application to bovine serum albumin labeled with benzospiropyran