Tryptophan fluorescence of sarcoplasmic reticulum ATPase. A fluorescence quench study.


The calcium-dependent change in the tryptophan fluorescence intensity of the sarcoplasmic reticulum Ca2+- and Mg2+-ATPase was investigated using different quenching reagents. It is demonstrated that only those compounds which are bound to the enzyme (i.e., 1-(9,10-dibromomyristoyl)-sn-2-glycerophosphorylcholine and 1-(9,10-dibromostearoyl)-sn-glycero-3… (More)


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