MFAPs are another component of microfibrils, with fibrillins (FBNs).
Members
| MFAP1 | MFAP2 | MFAP3 | MFAP4 |
MFAP1 has several distinctive features, including a large number of glutamic acid residues (approximately 22%) that are clustered and that could serve as sites for interaction with tropoelastin, the highly basic soluble precursor in elastin synthesis.