FG-GAP <p>This region contains the extracellular repeat that is found in up to seven copies in alpha integrins. This repeat has been predicted to fold into a beta propeller structure [<cite idref="PUB00005729"/>]. The repeat is called the FG-GAP repeat after two conserved motifs in the repeat [<cite idref="PUB00005729"/>]. The FG-GAP repeats are found in the N terminus of integrin alpha chains, a region that has been shown to be important for ligand binding [<cite idref="PUB00005772"/>]. A putative Ca2+ binding motif is found in some of the repeats. </p>