Involved in mitotic nuclear envelope reassembly by promoting dephosphorylation of BAF/BANF1 during mitotic exit . Coordinates the control of BAF/BANF1 dephosphorylation by inhibiting VRK1 kinase and promoting dephosphorylation of BAF/BANF1 by protein phosphatase 2A (PP2A), thereby facilitating nuclear envelope assembly . May regulate nuclear localization of VRK1 in non-dividing cells . It is unclear whether it acts as a real PP2A regulatory subunit or whether it is involved in recruitment of the PP2A complex . Involved in brain development .
Endoplasmic reticulum membrane ; Single-pass type III membrane protein .
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