The Qgamma component of intra-membrane charge movement is present in mammalian muscle fibres, but suppressed in the absence of S100A1. 

The Qgamma component of intra-membrane charge movement is present in mammalian muscle fibres, but suppressed in the absence of S100A1.
Prosser BL, Hernández-Ochoa EO, Zimmer DB, Schneider MF.
>J Physiol. 2009 Sep 15;587(Pt 18):4523-41. Epub 2009 Aug 3. PMID: 19651767. doi: 10.1113/jphysiol.2009.177238.