期刊
JOURNAL OF BIOLOGICAL CHEMISTRY
卷 284, 期 37, 页码 25450-25458出版社
AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.M109.019661
关键词
-
资金
- Finnish National Graduate School in Informational and Structural Biology
- Academy of Finland [114713]
- European Union Design Study SAXIER [011934]
- European Union Framework Program 6 [RII3/CT/2004/506008]
- Academy of Finland (AKA) [114713, 114713] Funding Source: Academy of Finland (AKA)
Filamins are actin filament cross-linking proteins composed of an N-terminal actin-binding domain and 24 immunoglobulin-like domains (IgFLNs). Filamins interact with numerous proteins, including the cytoplasmic domains of plasma membrane signaling and cell adhesion receptors. Thereby filamins mechanically and functionally link the cell membrane to the cytoskeleton. Most of the interactions have been mapped to the C-terminal IgFLNs 16-24. Similarly, as with the previously known compact domain pair of IgFLNa20-21, the two-domain fragments IgFLNa16-17 and IgFLNa18-19 were more compact in small angle x-ray scattering analysis than would be expected for two independent domains. Solution state NMR structures revealed that the domain packing in IgFLNa18-19 resembles the structure of IgFLNa20-21. In both domain pairs the integrin-binding site is masked, although the details of the domain-domain interaction are partly distinct. The structure of IgFLNa16-17 revealed a new domain packing mode where the adhesion receptor binding site of domain 17 is not masked. Sequence comparison suggests that similar packing of three tandem filamin domain pairs is present throughout the animal kingdom, and we propose that this packing is involved in the regulation of filamin interactions through a mechanosensor mechanism.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据