The molecular packing in the crystal suggests the physiological form of the mitochondrial SQR is most likely to be a monomer, unlike that for E. coli which is believed to be a trimer.

• 此外，通过分析该复合物在晶体中的排列，我们推测它在线粒体内膜上是以单体形式发挥功能的，这一点与原核生物SQR的二体/三体化现象不同。