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. 2020 Mar 10;11:1291. doi: 10.1038/s41467-020-15073-7

Fig. 7. Model of hRpn10 RAZUL recruitment of E6AP to the 26S proteasome.

Fig. 7

Proteasome substrate receptors Rpn1, Rpn10, and Rpn13 recognize ubiquitin chains (yellow) through their T1 site (blue), UIM region (blue), and Pru domain (blue), respectively. The Rpn10 C-terminal RAZUL is intrinsically disordered (left panel), but folds to form a 4-helix bundle with the AZUL domain of E3 ligase E6AP (green), thus recruiting E6AP to the proteasome (right panel). Zn, light blue.