Predicted to enable nuclear import signal receptor activity and nuclear localization sequence binding activity. Predicted to be involved in DNA replication-dependent chromatin assembly; DNA replication-independent chromatin assembly; and protein import into nucleus. Predicted to act upstream of or within ribosome biogenesis. Predicted to be located in chromatin. Predicted to be part of protein-containing complex. Predicted to be active in cytoplasm and nucleus. Is expressed in retina outer nuclear layer. Orthologous to human IPO4 (importin 4). [provided by Alliance of Genome Resources, Apr 2022]