Sequence-specific double-stranded DNA-binding protein (PubMed:10606657, PubMed:11328883, PubMed:2174103, PubMed:2247056, PubMed:8355269). Binds ATT-rich and T-rich DNA sequences and facilitates DNA bending (PubMed:10606657, PubMed:11328883, PubMed:2174103, PubMed:2247056, PubMed:8355269). May regulate the expression of genes involved in cellular fatty acid import, including SCARB1/CD36, and genes involved in lipid droplet formation (By similarity). May regulate the expression of LCN2, and thereby influence iron metabolism and apoptosis-related pathways (By similarity). May regulate the expression of genes involved in glucose transport (By similarity). {ECO:0000250|UniProtKB:Q5U4E2, ECO:0000269|PubMed:10606657, ECO:0000269|PubMed:11328883, ECO:0000269|PubMed:2174103, ECO:0000269|PubMed:2247056, ECO:0000269|PubMed:8355269}. This is the function of Ensembl gene identifier ENSG00000214022 (REPIN1, replication initiator 1).