輔肌動蛋白(英語:Actinin)是一種微絲蛋白。ACTN1是骨骼肌細胞中肌動蛋白附著於Z線所必須的[1],也是其在平滑肌中附於電子緻密部分所需。起功能的輔肌動蛋白是反向平行的二聚體,which cross-links the thin filaments in adjacent sarcomeres, and therefore coordinated contractions between sarcomeres in the horizontal axis.
The non-sarcomeric α-actinins (ACTN1 and ACTN4) are widely expressed. Both ends of the rod-shaped α-actinin dimer contain actin-binding domains.
ACTN4上的突變可造成腎臟疾病局灶性節段性腎小球硬化症。
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- ↑ Ganong's Review of Medical Physiology, 24th Edition. Lange (Tata McGraw Hill). 2012: p. 100.
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