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(A) Ribbon and surface representations of ubiquitin (Protein data bank identication code: 1UBQ). The C-terminal Gly76 is marked. (B) Location of lysine residues (blue) on ubiquitin. The ubiquitin molecule is shown as surface representation. (C) Major recognition patches on ubiquitin. The hydrophobic patch centred on Ile44 (green), the polar patch centred on Asp58 (blue) and the diglycine patch near the C-terminal Gly76 (pink) are shown.
