Figure 2
From: Hofmeister effect of anions on calcium translocation by sarcoplasmic reticulum Ca2+-ATPase

Schematic diagram of a SR vesicle adsorbed on a solid supported membrane (SSM) and subjected to ATP activation (not drawn to scale).
For simplicity, only four Ca-ATPase molecules are shown in the vesicle. Adapted with permission from ref. 40. Copyright 2009 American Chemical Society.