Binds DNA. Interacts with SUMO conjugating enzyme UBC9/UBE2I. Interacts with the telomeric protein TERF2IP. Liver, skeletal and heart muscle, mammary cells. Very low levels in brain, lung, placenta and kidney. Strongly overexpressed in many pancreas and colorectal cancers. Increased gene copy numbers are detected in 3 of 12 tumor cell lines and 2 of 12 primary pancreatic carcinomas. Overexpressed in 80% of colorectal cancers. Sumoylated. Belongs to the krueppel C2H2-type zinc-finger protein family.