TM4SF18 Proteins and Enzymes

TM4SF18 also known as AAB5 and L6D, was cloned from human umbilical vein endothelial cells. It shares approximately 40 - 50% amino acid sequence identity with TM4SF1/L6, TM4SF4/IL-TMP, and TM4SF5, a group of proteins with limited homology to the tetraspanin superfamily.