function:Mediates the import of RPA complex into the nucleus, possibly via some interaction with importin beta. Isoform 2 is sumoylated and mediates the localization of RPA complex into the PML body of the nucleus, thereby participating in RPA function in DNA metabolism.,PTM:Isoform 2 is sumoylated. Sumoylation is required for localization in the nuclear PML body and transport of RPA complex in PML body. Upon UV irradiation and during S phase, it is desumoylated, releasing RPA complex that is translocated to sites of DNA damage. Sumoylation takes place at different Lys residues.,similarity:Contains 1 RIP-type zinc finger.,subcellular location:Only nuclear, localizes to PML body.,subunit:Interacts with the RPA1 subunit of RPA complex.,tissue specificity:Widely expressed. Expressed in pancreas, kidney, muscle, liver, lung, placenta, brain, heart, leukocytes, colon, intestine, ovary, testis

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