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.
Gene References into Functions
LAP1 protein encoded by TOR1AIP1 may play a role in dysferlinopathy pathogenesisPMID:28110863
LAP1 co-localizes with acetylated alpha-tubulin in the mitotic spindle and with gamma-tubulin in centrosomes (main microtubule organizing center) in mitotic cells.PMID:25323962
Data show that mutation of arginine 563 in lamina-associated polypeptide 1 (LAP1) reduces its ability to stimulate TorsinA ATPase hydrolysis.PMID:25149450
study described a new autosomal recessive nuclear envelope disease caused by a homozygous mutation in exon 1 of TOR1AIP1 encoding LAP1B; study expands the spectrum of genes associated with nuclear envelopathies and highlights critical function for LAP1B in striated musclePMID:24856141
Data indicate that the protein phosphatase 1 (PP1) binding domain in nuclear membrane protein lamina associated polypeptide 1B (LAP1B) was here identified as the REVRF motif at amino acids 55-59.PMID:24116158
Molecular cloning of LAP1B & the role of the protein domains in localization of LAP1B to nuclear and endoplasmic reticulum membranes was determinedPMID:12061773