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. Author manuscript; available in PMC: 2012 Feb 14.
Published in final edited form as: Front Biosci (Elite Ed). 2011 Jun 1;3:1425–1442. doi: 10.2741/e344

Figure 11.

Figure 11

A schematic model suggesting that mXinα participates the assembly of ITO channel to the ICD of ventricular myocytes. In mice, the ITO channels reflect the assembly of Kv4.2/Kv4.3 α-subunits, Kvβ1 and KChIP2. A population of the ITO channels is known to localize at the ICD. Furthermore, it has been shown that the Kv4 pore-forming α-subunit is able to bind to filamin, and KChIP2. The associations with both proteins greatly enhance the surface expression of Kv4.2. In this study and our previous studies, we have clearly demonstrated that mXinα is capable of interacting with both KChIP2 and filamin. Through these interactions, mXinα likely influences surface expression of ITO channel.