Interacts with CCNT2; down-regulates CCNT2-mediated activation of viral promoters during herpes simplex virus 1/HHV-1 infection (PubMed:21509660). Found in a complex with RMC1, CCZ1 MON1A and MON1B (PubMed:29038162). Induced in fibroblast KMB17 cells by HSV-1. Belongs to the MON1/SAND family.