Which aspect does NOT distinguish bacterial SMC proteins from eukaryotic SMC proteins?

Question

Quizplus · Accepted Answer

Structural Maintenance of Chromosomes (SMC) proteins are essential for chromosome organization, segregation, and DNA repair in all organisms. Both bacterial and eukaryotic SMC proteins share several structural features, such as the ability to form coiled-coil structures (A), the presence of ATPase activity for binding and hydrolysis of ATP (B), and the formation of "hinge" domains (C) and "head" domains (D) that are crucial for their function.
The key difference between bacterial and eukaryotic SMC proteins lies in their oligomerization state. Bacterial SMC proteins typically form homodimers, meaning that they pair with an identical copy of themselves. In contrast, eukaryotic SMC proteins usually function as part of larger complexes called cohesins and condensins, which are heterodimers or hetero-oligomers composed of different types of SMC proteins and various non-SMC subunits.
Therefore, the aspect that does NOT distinguish bacterial SMC proteins from eukaryotic SMC proteins is the formation of homodimers versus heterodimers (E), as this is a distinguishing feature between the two groups.

Which Aspect Does NOT Distinguish Bacterial SMC Proteins from Eukaryotic