Zinc finger Ran-binding domain-containing protein 3 (ZRANB3) is a 1079 amino acid gene product that belongs to the SNF2/RAD54 helicase family. Other family members are known to be involved in DNA repair and mitotic recombination. This family of proteins often plays an active role in recombination processes in cooperation with other members of the RAD52 epistasis group. The ZRANB3 product contains one helicase ATP-binding domain, one helicase C-terminal domain and one RanBP2-type zinc finger. RanBP2-type zinc fingers mediate the helicase binding to RNA. Similar to other Ran-binding zinc finger proteins, ZRANB3 likely acts as a splice factor for alternative splicing events of pre-mRNA transcripts. ZRANB proteins may also interfere with constitutive 5'-splice site selection.