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TETRAMERIC STRUCTURE AND CELLULAR LOCATION OF CATECHOL 2,3-DIOXYGENASE

机译:儿茶酚2,3-二氧合酶的四聚体结构和细胞定位

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Catechol 2,3-dioxygenase from the meta-cleavage pathway encoded on the TOL plasmid of Pseudomonas putida (pWWO) was investigated by electron microscopy. Negatively stained samples of the purified catechol 2,3-dioxygenase revealed that the enzyme consists of four subunits arranged in a tetrahedral conformation. Monoclonal antibodies raised against catechol 2,3-dioxygenase showed highly specific reactions and were used to localize the enzyme in Escherichia coli (pAW31) and P. putida (pWWO), using the protein A-gold technique carried out as a post-embedding immunoelectron microscopy procedure. Our in situ labeling studies revealed a cytoplasmic location of the catechol 2,3-dioxygenase in both cell types. [References: 25]
机译:通过电子显微镜研究了恶臭假单胞菌(pWWO)的TOL质粒上编码的间位裂解途径中的邻苯二酚2,3-二加氧酶。纯化的邻苯二酚2,3-二加氧酶的负染色样品显示,该酶由排列成四面体构象的四个亚基组成。针对儿茶酚2,3-双加氧酶的单克隆抗体表现出高度特异性的反应,并使用蛋白A-金技术作为包埋后免疫电子技术,将该酶定位于大肠杆菌(pAW31)和恶臭假单胞菌(pWWO)中。显微镜检查程序。我们的原位标记研究揭示了两种细胞类型中邻苯二酚2,3-二加氧酶的胞质位置。 [参考:25]

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