Aureliano, M.2014-07-152014-07-152000-05-300162-0134AUT: MAA01296http://hdl.handle.net/10400.1/4776‘Monovanadate’ containing mainly monomeric, dimeric and tetrameric vanadate species or ‘decavanadate’, containingmainlydecameric vanadate species inhibits the passive and the active efflux of Ca2+ through the sarcoplasmic reticulum calcium pump. When the efflux of Ca2+ by sarcoplasmic reticulum vesicles is not associated with ATP synthesis both vanadate solutions inhibit the passive efflux of Ca 2+. However, only ‘decavanadate’ exerts noticeable effects when the efflux of Ca2q is associated with ATP synthesis being the active efflux of Ca2+ almost completely inhibited by decameric species concentration as low as 40 microM.engDecavanadateCalcium ATPaseSarcoplasmic reticulumjournal article