C2H2-type zinc binding domain found in calcium-binding and coiled-coil domain-containing protein 1 (CALCOCO1) and similar proteins
CALCOCO1, also called calphoglin, or coiled-coil coactivator protein, or Sarcoma antigen NY-SAR-3, functions as a coactivator for aryl hydrocarbon and nuclear receptors (NR). It is recruited to promoters through its contact with the N-terminal basic helix-loop-helix-Per-Arnt-Sim (PAS) domain of transcription factors or coactivators, such as NCOA2. During ER-activation CALCOCO1 acts synergistically in combination with other NCOA2-binding proteins, such as EP300, CREBBP and CARM1. It is involved in the transcriptional activation of target genes in the Wnt/CTNNB1 pathway. It functions as a secondary coactivator in LEF1-mediated transcriptional activation via its interaction with CTNNB1. In association with CCAR1, CALCOCO1 enhances GATA1- and MED1-mediated transcriptional activation from the gamma-globin promoter during erythroid differentiation of K562 erythroleukemia cells. CALCOCO1 contains a C2H2-type zinc binding domain.
Jiyao W et al.(2023). "The conserved domain database in 2023.",