- Kindlin-2 interacts with α-actinin-2 and β1 integrin to maintain the integrity of the Z-disc in cardiac muscles.
Kindlin-2 interacts with α-actinin-2 and β1 integrin to maintain the integrity of the Z-disc in cardiac muscles.
FEBS letters (2015-07-06)
Lihua Qi, Yu Yu, Xiaochun Chi, Weizhi Xu, Danyu Lu, Yao Song, Youyi Zhang, Hongquan Zhang
PMID26143257
RESUMEN
Kindlin-2, as an integrin-interacting protein, was known to be required for the maintenance of cardiac structure and function in zebrafish. However, the mechanism remains unclear. We found that Kindlin-2 interacts and colocalizes with α-actinin-2 at the Z-disc of mouse cardiac muscles and there Kindlin-2 also interacts with β1 integrin. Knockdown of Kindlin-2 influences the association of β1 integrin with α-actinin-2 and disrupts the structure of the Z-disc and leads to cardiac dysfunction. Our data indicated that Kindlin-2 is a novel α-actinin-2-interacting protein and plays an important role in the regulation of cardiac structure and function.
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