Bestrophin is important for the rhythmic but not the tonic contraction in rat mesenteric small arteries.
Broegger T, Jacobsen JC, Secher Dam V, Boedtkjer DM, Kold-Petersen H, Pedersen FS, Aalkjaer C, Matchkov VV. Cardiovasc Res. 2011 Sep 1; 91(4):685-93. Epub 2011 Apr 14.