Microfibril-associated Glycoprotein-2 Interacts with Fibrillin-1 and Fibrillin-2 Suggesting a Role for MAGP-2 in Elastic Fiber Assembly
نویسندگان
چکیده
منابع مشابه
Microfibril-associated MAGP-2 stimulates elastic fiber assembly.
Elastic fibers are complex structures composed of a tropoelastin inner core and microfibril outer mantle guiding tropoelastin deposition. Microfibrillar proteins mainly include fibrillins and microfibril-associated glycoproteins (MAGPs). MAGP-2 exhibits developmental expression peaking at elastic fiber onset, suggesting that MAGP-2 mediates elastic fiber assembly. To determine whether MAGP-2 re...
متن کاملIdentification of a major microfibril-associated glycoprotein-1-binding domain in fibrillin-2.
Using yeast two-hybrid, ligand blotting, and solid phase binding assays, we have shown that microfibril-associated glycoprotein-1 (MAGP-1) interacts with the 8-cysteine motif of fibrillin-2 encoded by exon 24. Binding to this sequence was demonstrated for full-length MAGP-1 as well as for the MAGP-1 matrix-binding domain encoded by exons 7 and 8. The matrix-binding domain, but not the full-leng...
متن کاملFibrillin-1 interactions with heparin. Implications for microfibril and elastic fiber assembly.
Fibrillin-1 assembly into microfibrils and elastic fiber formation involves interactions with glycosaminoglycans. We have used BIAcore technology to investigate fibrillin-1 interactions with heparin and with heparin saccharides that are analogous to S-domains of heparan sulfate. We have identified four high affinity heparin-binding sites on fibrillin-1, localized three of these sites, and defin...
متن کاملInteraction of tropoelastin with the amino-terminal domains of fibrillin-1 and fibrillin-2 suggests a role for the fibrillins in elastic fiber assembly.
Alignment of tropoelastin molecules during the process of elastogenesis is thought to require fibrillin-containing microfibrils. In this study, we have demonstrated that amino-terminal domains of two microfibrillar proteins, fibrillin-1 and fibrillin-2, interact with tropoelastin in solid phase binding assays. The tropoelastin-binding site was localized to a region beginning at the glycine-rich...
متن کاملMicrofibril structure masks fibrillin-2 in postnatal tissues.
Fibrillin microfibrils are polymeric structures present in connective tissues. The importance of fibrillin microfibrils to connective tissue function has been demonstrated by the multiple genetic disorders caused by mutations in fibrillins and in microfibril-associated molecules. However, knowledge of microfibril structure is limited, largely due to their insolubility. Most previous studies hav...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2002
ISSN: 0021-9258
DOI: 10.1074/jbc.m206363200