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-Structure paper
タイトル | Non-syndromic Mitral Valve Dysplasia Mutation Changes the Force Resilience and Interaction of Human Filamin A. |
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ジャーナル・号・ページ | Structure, Vol. 27, Issue 1, Page 102-112.e4, Year 2019 |
掲載日 | 2019年1月2日 |
著者 | Tatu J K Haataja / Rafael C Bernardi / Simon Lecointe / Romain Capoulade / Jean Merot / Ulla Pentikäinen / |
PubMed 要旨 | Filamin A (FLNa), expressed in endocardial endothelia during fetal valve morphogenesis, is key in cardiac development. Missense mutations in FLNa cause non-syndromic mitral valve dysplasia (FLNA-MVD). ...Filamin A (FLNa), expressed in endocardial endothelia during fetal valve morphogenesis, is key in cardiac development. Missense mutations in FLNa cause non-syndromic mitral valve dysplasia (FLNA-MVD). Here, we aimed to reveal the currently unknown underlying molecular mechanism behind FLNA-MVD caused by the FLNa P637Q mutation. The solved crystal structure of the FLNa3-5 P637Q revealed that this mutation causes only minor structural changes close to mutation site. These changes were observed to significantly affect FLNa's ability to transmit cellular force and to interact with its binding partner. The performed steered molecular dynamics simulations showed that significantly lower forces are needed to split domains 4 and 5 in FLNA-MVD than with wild-type FLNa. The P637Q mutation was also observed to interfere with FLNa's interactions with the protein tyrosine phosphatase PTPN12. Our results provide a crucial step toward understanding the molecular bases behind FLNA-MVD, which is critical for the development of drug-based therapeutics. |
リンク | Structure / PubMed:30344108 / PubMed Central |
手法 | SAS (X-ray synchrotron) / X線回折 |
解像度 | 2.3070081803 Å |
構造データ | SASDEP7: SASDEQ7: PDB-6ew1: |
化合物 | ChemComp-HOH: |
由来 |
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キーワード | CELL ADHESION / Actin binding protein |