**Tadashi Satoh, Maho Yagi-Utsumi, Kenta Okamoto, Eiji Kurimoto, Keiji Tanaka and Koichi Kato**

Molecular and Structural Basis of the Proteasome α Subunit Assembly Mechanism Mediated by the Proteasome-Assembling Chaperone PAC3-PAC4 Heterodimer Reprinted from: *Int. J. Mol. Sci.* **2019**, *20*, 2231, doi:10.3390/ijms20092231 .............. **151**
