Institute of Physical Chemistry, University of Vienna, Währingerstrasse 42, A-1090 Vienna, Austria.
Plant Physiol. 1982 Mar;69(3):580-4. doi: 10.1104/pp.69.3.580.
Respiratory particles containing an aa(3)-type cytochrome oxidase were prepared from Anacystis nidulans, Synechocystis 6714, Synechococcus lividus, Anabaena variabilis, Nostoc sp. strain MAC, Nostoc muscorum, and Mastigocladus laminosus. Oxidation of c-type cytochromes by membrane preparations of the different blue-green algae was observed using purified cytochromes from horse heart, Candida krusei, tuna, Saccharomyces oviformis, Rhodospirillum rubrum, Rhodospirillum molischianum, Rhodopseudomonas palustris, Rhodocyclus purpureus, Paracoccus denitrificans, Anacystis nidulans, Anabaena variabilis, Euglena gracilis, and Scenedesmus obliquus. Rapid oxidations were consistently observed with the mitochondrial c-type cytochromes (horse heart cytochrome c reacts most rapidly) and with cytochromes c(2) from Rhodopseudomonas palustris and Rhodocyclus purpureus; in contrast, the cytochrome c(2) from Rhodospirillum rubrum and the plastidic cytochromes from E. gracilis and Scendesmus obliquus were inactive with all membrane preparations. All reactions were inhibited by low concentrations of KCN, NaN(3), and CO, and they were activated by Tween 80, thus indicating participation of the terminal oxidase. The results are discussed in view of the spectral similarities between the terminal oxidase of blue-green algae and the mitochondrial aa(3)-type cytochrome oxidase of plants and other eukaryotes.
从鱼腥藻、集胞藻 6714、钝顶螺旋藻、变鱼腥藻、念珠藻 MAC 株、地木耳和颤藻中制备了含有 aa(3)-型细胞色素氧化酶的呼吸颗粒。用来自马心、克鲁斯假丝酵母、金枪鱼、酿酒酵母、红假单胞菌、沼泽红假单胞菌、沼泽盐杆菌、荚膜红假单胞菌、紫色硫细菌、脱氮副球菌、鱼腥藻、变鱼腥藻、绿眼虫和斜生栅藻的纯化细胞色素观察了不同蓝藻的膜制剂对 c 型细胞色素的氧化作用。与线粒体 c 型细胞色素(马心细胞色素 c 反应最快)和来自沼泽红假单胞菌和紫色硫细菌的细胞色素 c(2)一致,快速氧化;相比之下,红假单胞菌和绿眼虫和斜生栅藻的质体细胞色素 c(2)与所有膜制剂均无反应。所有反应均被低浓度的 KCN、NaN(3)和 CO 抑制,并被 Tween 80 激活,因此表明末端氧化酶的参与。根据蓝藻的末端氧化酶与植物和其他真核生物的线粒体 aa(3)-型细胞色素氧化酶之间的光谱相似性,对结果进行了讨论。