Required for nuclear membrane integrity. Induces TOR1A and TOR1B ATPase activity and is required for their location on the nuclear membrane. Binds to A- and B-type lamins. Possible role in membrane attachment and assembly of the nuclear lamina. . This is the function of Ensembl gene identifier ENSG00000143337 (TOR1AIP1, torsin 1A interacting protein 1).