Protein Assembly: From Trimer to Octadecamer Structural Formation #3273098 (License: Personal Use)

The left panel illustrates three red spherical monomeric units binding via a coiled-coil stalk (gold and purple helices) to form a trimer. The right panel depicts six such trimers converging radially at their stalks to create a symmetric octadecamer complex, with a 20 nm height reference indicating nanoscale dimensions. This hierarchical assembly is common in structural virology and molecular nanotechnology.

Used in educational or research web pages on protein quaternary structure, viral capsid formation, or self-assembling nanomaterials; matches user intent seeking visual clarification of oligomerization pathways.