Rogers N K, Moore G R, Sternberg M J
J Mol Biol. 1985 Apr 20;182(4):613-6. doi: 10.1016/0022-2836(85)90248-7.
An equal mixture of oxidized and reduced cytochrome c551 experiences a change in the potential of the haem iron when one of the propionates attached to the haem is ionized. The change is 65 mV, which corresponds to an effective dielectric between the propionate and the iron of 27. It has been possible to use the algorithm of Warwicker & Watson (1982) to calculate the change in the potential at the haem iron arising from the change in ionization of the propionate. This gives the extra work required to oxidize or reduce the iron. The change in potential that we calculate is 90 mV, which corresponds to an effective dielectric of 19.5, between the propionate and the iron. In comparison with other commonly used dielectric models the agreement is very good.
当与血红素相连的一个丙酸盐发生离子化时，氧化型和还原型细胞色素c551的等量混合物的血红素铁电位会发生变化。该变化为65毫伏，这对应于丙酸盐与铁之间的有效介电常数为27。利用沃里克尔和沃森（1982年）的算法，可以计算出由于丙酸盐离子化变化而引起的血红素铁电位变化。这给出了氧化或还原铁所需的额外功。我们计算出的电位变化为90毫伏，这对应于丙酸盐与铁之间的有效介电常数为19.5。与其他常用的介电模型相比，一致性非常好。
