LAPs are components of the nuclear lamina which supports the nuclear envelope.LAP2alpha is a non-membrane-associated member of the LAP family which is unique. This family of proteins is the C terminal domain of LAP2alpha which consists of residues 459-693 and constitutes a dimeric structure with an antiparallel coiled coil. LAP2alpha is involved in cell-cycle regulation and chromatin organisation and preferentially binds to lamin A/C [1].

1: Structural basis for dimerization of LAP2alpha, a component of the nuclear lamina. Bradley CM, Jones S, Huang Y, Suzuki Y, Kvaratskhelia M, Hickman AB, Craigie R, Dyda F; Structure. 2007;15:643-653. PMID:17562312