go_id,ontology,go_term,term_definition,evidence GO:0004842,MF,"ubiquitin-protein transferase activity","Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.",IBA GO:0007528,BP,"neuromuscular junction development","A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a neuromuscular junction.",IDA|ISS GO:0008270,MF,"zinc ion binding","Interacting selectively and non-covalently with zinc (Zn) ions.",IEA GO:0016567,BP,"protein ubiquitination","The process in which one or more ubiquitin groups are added to a protein.",IMP GO:0016874,MF,"ligase activity","Catalysis of the joining of two substances, or two groups within a single molecule, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate.",IEA GO:0031594,CC,"neuromuscular junction","The junction between the axon of a motor neuron and a muscle fiber. In response to the arrival of action potentials, the presynaptic button releases molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane of the muscle fiber, leading to a change in post-synaptic potential.",ISS GO:0061630,MF,"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