Journal article
A Mg2+-independent high-affinity Ca2+-stimulated adenosine triphosphatase in the plasma membrane of rat stomach smooth muscle. Subcellular distribution and inhibition by Mg2+
Abstract
Plasma membrane enriched fraction isolated from the fundus smooth muscle of rat stomach displayed Ca2+-stimulated ATPase activity in the absence of Mg2+. The Ca2+ dependence of such an ATPase activity can be resolved into two hyperbolic components with a high affinity (Km = 0.4 microM) and a low affinity (Km = 0.6 mM) for Ca2+. Distribution of these high-affinity and low-affinity Ca2+-ATPase activities parallels those of several plasma membrane …
Authors
Kwan C-Y; Kostka P
Journal
Biochimica et Biophysica Acta, Vol. 776, No. 2, pp. 209–216
Publisher
Elsevier
Publication Date
October 1984
DOI
10.1016/0005-2736(84)90210-4
ISSN
0006-3002