Becher D, Specht M, Hammer E, Francke W, Schauer F
Institut für Mikrobiologie und Molekularbiologie, Ernst-Moritz-Arndt-Universität Greifswald, D-17487 Greifswald, Germany.
Appl Environ Microbiol. 2000 Oct;66(10):4528-31. doi: 10.1128/AEM.66.10.4528-4531.2000.
Cells of the gram-negative bacterium Ralstonia sp. strain SBUG 290 grown in the presence of biphenyl are able to cooxidize dibenzofuran which has been 1,2-hydroxylated. Meta cleavage of the 1, 2-dihydroxydibenzofuran between carbon atoms 1 and 9b produced 2-hydroxy-4-(3'-oxo-3'H-benzofuran-2'-yliden)but-2-enoic acid, which was degraded completely via salicylic acid. The presence of these intermediates indicates a degradation mechanism for dibenzofuran via lateral dioxygenation by Ralstonia sp. strain SBUG 290.
在联苯存在下生长的革兰氏阴性细菌罗尔斯通氏菌属菌株SBUG 290的细胞能够共氧化已被1,2-羟基化的二苯并呋喃。1,2-二羟基二苯并呋喃在碳原子1和9b之间的间位裂解产生2-羟基-4-(3'-氧代-3'H-苯并呋喃-2'-亚基)丁-2-烯酸,其通过水杨酸完全降解。这些中间体的存在表明罗尔斯通氏菌属菌株SBUG 290通过侧向双加氧作用降解二苯并呋喃的机制。