Enables single-stranded DNA binding activity. Contributes to DNA helicase activity. Acts upstream of or within DNA unwinding involved in DNA replication; cell population proliferation; and cellular response to xenobiotic stimulus. Located in nucleus. Is expressed in several structures, including alimentary system; brain; genitourinary system; respiratory system; and sensory organ. Human ortholog(s) of this gene implicated in hepatocellular carcinoma. Orthologous to human MCM7 (minichromosome maintenance complex component 7). [provided by Alliance of Genome Resources, Apr 2022]