Probable Polycomb group (PcG) protein involved in transcriptional regulation mediated by ligand-bound retinoic acid receptors (RARs) and peroxisome proliferator-activated receptor gamma (PPARG) (PubMed:16606617). Acts as a coactivator of RARA and RXRA through association with NCOA1 (PubMed:16606617). Acts as a corepressor for PPARG and suppresses its adipocyte differentiation-inducing activity (PubMed:21047783). Non-catalytic component of the PR-DUB complex, a complex that specifically mediates deubiquitination of histone H2A monoubiquitinated at 'Lys-119' (H2AK119ub1) (By similarity). Acts as a sensor of N(6)-methyladenosine methylation on DNA (m6A): recognizes and binds m6A DNA, leading to its ubiquitination and degradation by TRIP12, thereby inactivating the PR-DUB complex and regulating Polycomb silencing (By similarity). Component of the PR-DUB complex, at least composed of BAP1 and ASXL1 (By similarity). Interacts with RARA, RXRA (PubMed:16606617). Interacts with NCOA1 (By similarity). Interacts with PPARA and PPARG (PubMed:21047783). Contains two Leu-Xaa-Xaa-Leu-Leu (LXXLL) motifs, which may be required for an association with nuclear receptors. The HARE HTH-type domain recognizes and binds N(6)-methyladenosine methylated DNA (m6A). Ubiquitinated by TRIP12, leading to its subsequent degradation following binding N(6)-methyladenosine methylated DNA (m6A). Belongs to the Asx family. Was reported to act as a corepressor through recruitment of KDM1A and CBX; this publication has been retracted.