Linking integrin conformation to function

被引:245
作者
Askari, Janet A. [1 ]
Buckley, Patrick A. [1 ]
Mould, A. Paul [1 ]
Humphries, Martin J. [1 ]
机构
[1] Univ Manchester, Fac Life Sci, Wellcome Trust Ctr Cell Matrix Res, Manchester M13 9PT, Lancs, England
基金
英国生物技术与生命科学研究理事会; 英国惠康基金;
关键词
Function; Integrins; Structure; INSIDE-OUT ACTIVATION; STRUCTURAL BASIS; EXTRACELLULAR SEGMENT; CRYSTAL-STRUCTURE; DOMAIN; COMPLEX; ALPHA(IIB)BETA(3); ADHESION; REVEALS; TALIN;
D O I
10.1242/jcs.018556
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Integrins are alpha beta heterodimeric adhesion receptors that relay signals bidirectionally across the plasma membrane between the extracellular matrix and cell-surface ligands, and cytoskeletal and signalling effectors. The physical and chemical signals that are controlled by integrins are essential for intercellular communication and underpin all aspects of metazoan existence. To mediate such diverse functions, integrins exhibit structural diversity, flexibility and dynamism. Conformational changes, as opposed to surface expression or clustering, are central to the regulation of receptor function. In recent years, there has been intense interest in determining the three-dimensional structure of integrins, and analysing the shape changes that underpin the interconversion between functional states. Considering the central importance of the integrin signalling nexus, it is perhaps no surprise that obtaining this information has been difficult, and the answers gained so far have been complicated. In this Commentary, we pose some of the key remaining questions that surround integrin structure-function relationships and review the evidence that supports the current models.
引用
收藏
页码:165 / 170
页数:6
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