Fig. 1
From: Keratin nanofibers in tissue engineering: bridging nature and innovation
Keratin molecular intra- and intermolecular interactions, (A), 3D helix structure of keratin (B) Adapted from https://www.rcsb.org/structure/6ec0. PDB DOI: https://doi.org/10.2210/pdb6EC0/pdb. Reproduced with permission of reference from (2023a). MDPI, Open Access