BP

GO:0000209

protein polyubiquitination

Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.

IBA

BP

GO:0042787

protein ubiquitination involved in ubiquitin-dependent protein catabolic process

The process in which a ubiquitin group, or multiple groups, are covalently attached to the target protein, thereby initiating the degradation of that protein.

IBA

BP

GO:0043161

proteasome-mediated ubiquitin-dependent protein catabolic process

The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.

IBA

CC

GO:0000139

Golgi membrane

The lipid bilayer surrounding any of the compartments of the Golgi apparatus.

IEA

CC

GO:0016021

integral component of membrane

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

IEA

MF

GO:0008270

zinc ion binding

Interacting selectively and non-covalently with zinc (Zn) ions.

IEA

MF

GO:0061630

ubiquitin protein ligase activity

Catalysis of the transfer of ubiquitin to a substrate protein via the reaction X-ubiquitin + S --> X + S-ubiquitin, where X is either an E2 or E3 enzyme, the X-ubiquitin linkage is a thioester bond, and the S-ubiquitin linkage is an isopeptide bond between the C-terminal glycine of ubiquitin and the epsilon-amino group of lysine residues in the substrate. Note that this may include the extension of ubiquitin chains.

IBA