Could be involved in calcium-dependent cell adhesion or intercellular interactions. May contribute to the elastic fiber assembly and/or maintenance. Homodimer. Can also form higher oligomers. Interacts with FBN1, FBN2 and LOX. Interacts with COL1A1 in a Ca (2+)-dependent manner. Interacts with ELN in a Ca (2+)-dependent manner; this interaction promotes ELN self-assembly.