... on the mica surface without being broken, resulting in‘double membranes’, and these flatten on the mica sur-face with a thickness of 10 nm. Unfortunately, the smallness of the vesicles and their ... Ca2+inside the SR against its concentrationgradient. The importance of the SR Ca2+-pump wasrealized in the early 1960s by Ebashi and Lipmann[5,6] and, since then, most of the molecular compo-nents ... procedures) without anynucleotide, it was expected that most SERCA wouldremain as the ATP-unbound and Ca2+-boundE1Ca2+form. In the histogram (Fig. 2A) of the dis-tribution of the height of the...