Reactions Involved in Bioluminescence Systems of Limpet (
<i>Latia neritoides</i>
) and Luminous Bacteria
作者:Osamu Shimomura、Frank H. Johnson、Yasuhiro Kohama
DOI:10.1073/pnas.69.8.2086
日期:1972.8
bound flavin group constituting the light-emitter. The overall reaction includes oxidation of a specific substrate ("luciferin," an enol formate derivative of an aliphatic aldehyde), by 2 O(2) molecules, in the presence of a "purple protein" cofactor, yielding a ketone, HCOOH, CO(2), and light. In Achromobacter, a required aliphatic aldehyde, which is functionally equivalent to Latia luciferin, is oxidized
Latia中的发光涉及一种特定的黄素蛋白酶(“荧光素酶”),该酶具有构成发光体的紧密结合的黄素基团。整个反应包括在“紫色蛋白质”辅因子存在下,将2 O(2)分子氧化特定底物(“荧光素”,脂族醛的烯醇甲酸酯衍生物),生成酮,HCOOH,CO (2),轻便。在无色杆菌中,所需的脂族醛(在功能上等同于Latia luciferin)被氧化为含有与醛相同的烃链的酸。该反应在细菌荧光素酶和还原的黄素单核苷酸的存在下进行,每个醛分子的量子产率为0.17 + 0.1个光子,与醛链从9个碳原子到至少14个碳原子的长度无关。