. "Reviewed: Elliott, T, 2011-02-10"^^ . "Edited: Garapati, P V, 2010-10-29"^^ . "Authored: Garapati, P V, 2010-10-29"^^ . "Monoubiquitinated substrate acquires additional ubiquitin modifications in the form of multiple single attachments or a ubiquitin chain. Polyubiquitin chains added through K48 residue of ubiquitin typically targets the substrate for degradation (Raymond et al. 2009)."^^ . . . . . . . . . "Polyubiquitination of substrate"^^ . "6.3.2.19"^^ . . . . . . . . . .