The schematic diagram of the domain composition of LAP family proteins. The LAP family contains vertebrate Erbin, LRRC7, SCRIB, and LRRC1 together with Drosophila Scribble, Lap1, and C. elegans LET-413. All known LAP proteins contain N-terminal LRR domains followed by two conserved LAPSD domains. With the exception of LRRC1, other LAP proteins contain either one or four PDZ domains. The C terminus of LRRC1 contains a PDZ ligand sequence.