Calcium-uptake and ATPase studies carried out on fragmented sarcoplasmic reticulum from muscle of patients with Duchenne dystrophy showed low initial and total calcium uptake, low ATPase activity ...

Thomas Ostwald and David MacLennan were characterizing proteins that bind to calcium in the sarcoplasmic reticulum — a specialized type of endoplasmic reticulum found in muscle cells.

SARCOTUBULAR, fragments prepared from homogenates of skeletal muscle are able to sequester vigorously calcium ions if ATP is available, and they show the activity of Mg-ATPase and Ca-ATPase which ...