Fig. 1: F-actin can form low- to high-order structures.
From: Crowding alters F-actin secondary structure and hydration
From left to right: G-actin (monomer), F-actin (polymer), and a segment of bundled actin under depletion-driven interactions of polymer PEG. The G-actin and F-actin structures are obtained from PDB files 2HF4 and 6BNO, respectively.
