Sykes G A, Rogers L J
Biochem J. 1984 Feb 1;217(3):845-50. doi: 10.1042/bj2170845.
The redox potentials of flavodoxins from the cyanobacteria Synechococcus PCC 6301 (formerly Anacystis nidulans) and Nostoc strain MAC, and from the red alga Chondrus crispus, were determined by potentiometric titration. For the oxidized-semiquinone interconversion the potentials at pH 7.0 of the three flavodoxins were between -210 and -235 mV, and these were pH-dependent over the range pH 6.9-8.2. For the semiquinone-reduced interconversion the potentials of the cyanobacterial flavodoxins were close to -414 mV, and that for the algal flavodoxin, -370 mV, is the highest reported in this group of flavoproteins.
通过电位滴定法测定了来自蓝藻聚球藻PCC 6301（原称巢状组囊藻）、念珠藻菌株MAC以及红藻皱波角叉菜的黄素氧还蛋白的氧化还原电位。对于三种黄素氧还蛋白，在pH 7.0时氧化型-半醌互变的电位在-210至-235毫伏之间，且在pH 6.9 - 8.2范围内这些电位依赖于pH值。对于半醌-还原型互变，蓝藻黄素氧还蛋白的电位接近-414毫伏，而藻类黄素氧还蛋白的电位为-370毫伏，是该组黄素蛋白中报道的最高值。
