Transcription repressor that specifically binds to the 5'-TATTTT[T/G]-3' consensus sequence on promoters and repress transcription of PGC-1-alpha (PPARGC1A), thereby playing a role in regulation of neuron death. Homooligomer, heterooligomer with ZNF746 (PubMed:31856708). Interacts (via C2H2-type zinc fingers) with PRKN (By similarity). Interacts with TRIM28. Mainly localizes to the cytoplasm; probably translocates to the nucleus to repress selected genes. Ubiquitinated by PRKN. 'Lys-48'-linked polyubiquitination by PRKN leads to degradation by the proteasome and may play a key role in regulation of neuron death. May act as a downstream effector of PRKN and contribute to neurodegeneration in Parkinson disease cases caused by defects in PRKN: its accumulation due to the absence of PRKN, followed by up-regulation of PPARGC1A, could lead to the selective loss of dopamine neurons in the substantia nigra. Belongs to the krueppel C2H2-type zinc-finger protein family.