Transcriptional regulator that binds to the promoter and activates the transcription of genes promoting brown adipose tissue (BAT) differentiation. Among brown adipose tissue-specific genes, binds the proximal region of the promoter of the UCP1 gene to activate its transcription and thereby regulate thermogenesis (By similarity). May also play a role in the cellular response to replication stress (PubMed:23446422). {ECO:0000250|UniProtKB:Q7TSH3, ECO:0000269|PubMed:23446422}. This is the function of Ensembl gene identifier ENSG00000101493 (ZNF516, zinc finger protein 516).