The protein encoded by this gene is associated with the nuclear scaffold in proliferating cells. It was found to bind to the catalytic subunit of protein phosphatase-1 (PP1) and inhibit PP1 activity, suggesting that this protein may function as a regulatory subunit of PP1. Alternative splicing at this locus results in several transcript variants encoding different isoforms.
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C20orf101; H17739; Phosphatase and actin regulator 3; protein phosphatase 1, regulatory subunit 123; Scaffold-associated PP1-inhibiting protein; SCAPIN1; SCAPININ