Figure 1
From: Bacteria-host relationship: ubiquitin ligases as weapons of invasion

Comparison of the NleL and SopA crystal structures. Ribbon representations of the NleL (PDB code: 3NB2) and SopA (PDB code: 2QYU) HECT-like bacterial Ub ligases. Catalytic cysteine residues of NleL (C753) and SopA (C753) are represented as red spheres. The amino (N) and carboxyl (C) lobes of the HECT domain are indicated, as well as the amino-terminal substrate recognition β-helix domain.