This family consists of several mammalian microfibril-associated glycoprotein (MAGP) 1 and 2 proteins. MAGP1 and 2 are components of elastic fibres. MAGP-1 has been proposed to bind a C-terminal region of tropoelastin, the soluble precursor of elastin. MAGP-2 was found to interact with fibrillin-1 and -2, as well as fibulin-1, another component of elastic fibres this suggests that MAGP-2 may be important in the assembly of microfibrils [1].

1: Microfibril-associated glycoprotein-2 interacts with fibrillin-1 and fibrillin-2 suggesting a role for MAGP-2 in elastic fiber assembly. Penner AS, Rock MJ, Kielty CM, Shipley JM; J Biol Chem 2002;277:35044-35049. PMID:12122015